401k Plan data: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN plan

GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 401k Plan overview

Plan Name	GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN
Plan identification number	005

GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN Benefits

401k Plan Type

Defined Contribution Pension

Plan Features/Benefits

Profit-sharing
ERISA section 404(c) Plan - This plan, or any part of it is intended to meet the conditions of 29 CFR 2550.404c-1.
Total participant-directed account plan - Participants have the opportunity to direct the investment of all the assets allocated to their individual accounts, regardless of whether 29 CFR 2550.404c-1 is intended to be met.
Code section 401(k) feature - A cash or deferred arrangement described in Code section 401(k) that is part of a qualified defined contribution plan that provides for an election by employees to defer part of their compensation or receive these amounts in cash.
Code section 401(m) arrangement - Employee contributions are allocated to separate accounts under the plan or employer contributions are based, in whole or in part, on employee deferrals or contribtions to the plan. Not applicable if plan is 401(k) plan with only QNECs and/or QMACs. Also not applicable if Code section 403(b)(1), 403(b)(7) or 408 arrangements/accounts/annuities.
Participant-directed brokerage accounts provided as an investment option under the plan.
Total or partial participant-directed account plan - plan uses default investment account for participants who fail to direct assets in their account.
Master plan - A pension plan that is made available by a sponsor for adoption by employers; that is the subject of a favorable opinion letter; and for which a single funding medium (for example, a trust or custodial account) is established for the joint use of all adopting employers.
Plan sponsor(s) is (are) a member(s) of a controlled group (Code sections 414(b), (c), or (m)).

401k Sponsoring company profile

GREAT LAKES DREDGE & DOCK COMPANY, LLC has sponsored the creation of one or more 401k plans.

Company Name: GREAT LAKES DREDGE & DOCK COMPANY, LLC

Employer identification number (EIN): 201354414

NAIC Classification: 237990
NAIC Description: Other Heavy and Civil Engineering Construction

Additional information about GREAT LAKES DREDGE & DOCK COMPANY, LLC

Jurisdiction of Incorporation: Vermont Secretary of State Corporations Division

Incorporation Date: 1992-09-25

Company Identification Number: 63453

Legal Registered Office Address: 400 CORNERSTONE DR #240

WILLISTON
United States of America (USA)
05495

More information about GREAT LAKES DREDGE & DOCK COMPANY, LLC

Form 5500 Filing Information

Submission information for form 5500 for 401k plan GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN

Plan id# Filing Submission Date Name of Administrator Date Administrator Signed Name of Company Sponsor Date Sponsor Signed
005 2022-01-01
005 2021-01-01
005 2020-01-01
005 2019-01-01
005 2018-01-01
005 2017-01-01 SHABNAM SEDDIGH
005 2016-01-01 SHABNAM SEDDIGH
005 2015-01-01 SHABNAM SEDDIGH
005 2014-01-01 SHABNAM SEDDIGH
005 2013-01-01 MARK MARINKO
005 2012-01-01 WILLIAM STECKEL
005 2011-01-01 MAUREEN KINN
005 2009-01-01 MAUREEN KINN
005 2009-01-01 MAUREEN KINN 2010-10-14
005 2009-01-01 MAUREEN KINN 2010-10-14
005 2009-01-01 MAUREEN KINN

Plan Statistics for GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN

401k plan membership statisitcs for GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN

Measure Date Value
2022: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2022 401k membership
Total participants, beginning-of-year 2022-01-01 681
Total number of active participants reported on line 7a of the Form 5500 2022-01-01 424
Number of retired or separated participants receiving benefits 2022-01-01 4
Number of other retired or separated participants entitled to future benefits 2022-01-01 290
Total of all active and inactive participants 2022-01-01 718
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2022-01-01 0
Total participants 2022-01-01 718
Number of participants with account balances 2022-01-01 689
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2022-01-01 27
2021: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2021 401k membership
Total participants, beginning-of-year 2021-01-01 671
Total number of active participants reported on line 7a of the Form 5500 2021-01-01 408
Number of retired or separated participants receiving benefits 2021-01-01 4
Number of other retired or separated participants entitled to future benefits 2021-01-01 269
Total of all active and inactive participants 2021-01-01 681
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2021-01-01 0
Total participants 2021-01-01 681
Number of participants with account balances 2021-01-01 659
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2021-01-01 22
2020: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2020 401k membership
Total participants, beginning-of-year 2020-01-01 678
Total number of active participants reported on line 7a of the Form 5500 2020-01-01 404
Number of retired or separated participants receiving benefits 2020-01-01 1
Number of other retired or separated participants entitled to future benefits 2020-01-01 266
Total of all active and inactive participants 2020-01-01 671
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2020-01-01 0
Total participants 2020-01-01 671
Number of participants with account balances 2020-01-01 654
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2020-01-01 13
2019: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2019 401k membership
Total participants, beginning-of-year 2019-01-01 733
Total number of active participants reported on line 7a of the Form 5500 2019-01-01 384
Number of retired or separated participants receiving benefits 2019-01-01 4
Number of other retired or separated participants entitled to future benefits 2019-01-01 289
Total of all active and inactive participants 2019-01-01 677
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2019-01-01 1
Total participants 2019-01-01 678
Number of participants with account balances 2019-01-01 665
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2019-01-01 32
2018: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2018 401k membership
Total participants, beginning-of-year 2018-01-01 676
Total number of active participants reported on line 7a of the Form 5500 2018-01-01 479
Number of retired or separated participants receiving benefits 2018-01-01 4
Number of other retired or separated participants entitled to future benefits 2018-01-01 249
Total of all active and inactive participants 2018-01-01 732
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2018-01-01 1
Total participants 2018-01-01 733
Number of participants with account balances 2018-01-01 699
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2018-01-01 2
2017: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2017 401k membership
Total participants, beginning-of-year 2017-01-01 608
Total number of active participants reported on line 7a of the Form 5500 2017-01-01 412
Number of retired or separated participants receiving benefits 2017-01-01 4
Number of other retired or separated participants entitled to future benefits 2017-01-01 259
Total of all active and inactive participants 2017-01-01 675
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2017-01-01 1
Total participants 2017-01-01 676
Number of participants with account balances 2017-01-01 663
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2017-01-01 12
2016: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2016 401k membership
Total participants, beginning-of-year 2016-01-01 591
Total number of active participants reported on line 7a of the Form 5500 2016-01-01 477
Number of retired or separated participants receiving benefits 2016-01-01 4
Number of other retired or separated participants entitled to future benefits 2016-01-01 127
Total of all active and inactive participants 2016-01-01 608
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2016-01-01 0
Total participants 2016-01-01 608
Number of participants with account balances 2016-01-01 592
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2016-01-01 9
2015: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2015 401k membership
Total participants, beginning-of-year 2015-01-01 573
Total number of active participants reported on line 7a of the Form 5500 2015-01-01 470
Number of retired or separated participants receiving benefits 2015-01-01 4
Number of other retired or separated participants entitled to future benefits 2015-01-01 117
Total of all active and inactive participants 2015-01-01 591
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2015-01-01 0
Total participants 2015-01-01 591
Number of participants with account balances 2015-01-01 560
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2015-01-01 15
2014: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2014 401k membership
Total participants, beginning-of-year 2014-01-01 573
Total number of active participants reported on line 7a of the Form 5500 2014-01-01 450
Number of retired or separated participants receiving benefits 2014-01-01 3
Number of other retired or separated participants entitled to future benefits 2014-01-01 120
Total of all active and inactive participants 2014-01-01 573
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2014-01-01 0
Total participants 2014-01-01 573
Number of participants with account balances 2014-01-01 548
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2014-01-01 29
2013: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2013 401k membership
Total participants, beginning-of-year 2013-01-01 614
Total number of active participants reported on line 7a of the Form 5500 2013-01-01 468
Number of retired or separated participants receiving benefits 2013-01-01 1
Number of other retired or separated participants entitled to future benefits 2013-01-01 104
Total of all active and inactive participants 2013-01-01 573
Total participants 2013-01-01 573
Number of participants with account balances 2013-01-01 531
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2013-01-01 9
2012: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2012 401k membership
Total participants, beginning-of-year 2012-01-01 586
Total number of active participants reported on line 7a of the Form 5500 2012-01-01 466
Number of retired or separated participants receiving benefits 2012-01-01 2
Number of other retired or separated participants entitled to future benefits 2012-01-01 146
Total of all active and inactive participants 2012-01-01 614
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2012-01-01 0
Total participants 2012-01-01 614
Number of participants with account balances 2012-01-01 572
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2012-01-01 19
2011: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2011 401k membership
Total participants, beginning-of-year 2011-01-01 544
Total number of active participants reported on line 7a of the Form 5500 2011-01-01 448
Number of retired or separated participants receiving benefits 2011-01-01 6
Number of other retired or separated participants entitled to future benefits 2011-01-01 132
Total of all active and inactive participants 2011-01-01 586
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2011-01-01 0
Total participants 2011-01-01 586
Number of participants with account balances 2011-01-01 539
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2011-01-01 18
2009: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2009 401k membership
Total participants, beginning-of-year 2009-01-01 463
Total number of active participants reported on line 7a of the Form 5500 2009-01-01 392
Number of retired or separated participants receiving benefits 2009-01-01 5
Number of other retired or separated participants entitled to future benefits 2009-01-01 101
Total of all active and inactive participants 2009-01-01 498
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2009-01-01 0
Total participants 2009-01-01 498
Number of participants with account balances 2009-01-01 475
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2009-01-01 10

Measure	Date	Value
2022: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2022 401k membership
Total participants, beginning-of-year	2022-01-01	681
Total number of active participants reported on line 7a of the Form 5500	2022-01-01	424
Number of retired or separated participants receiving benefits	2022-01-01	4
Number of other retired or separated participants entitled to future benefits	2022-01-01	290
Total of all active and inactive participants	2022-01-01	718
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2022-01-01	0
Total participants	2022-01-01	718
Number of participants with account balances	2022-01-01	689
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2022-01-01	27
2021: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2021 401k membership
Total participants, beginning-of-year	2021-01-01	671
Total number of active participants reported on line 7a of the Form 5500	2021-01-01	408
Number of retired or separated participants receiving benefits	2021-01-01	4
Number of other retired or separated participants entitled to future benefits	2021-01-01	269
Total of all active and inactive participants	2021-01-01	681
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2021-01-01	0
Total participants	2021-01-01	681
Number of participants with account balances	2021-01-01	659
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2021-01-01	22
2020: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2020 401k membership
Total participants, beginning-of-year	2020-01-01	678
Total number of active participants reported on line 7a of the Form 5500	2020-01-01	404
Number of retired or separated participants receiving benefits	2020-01-01	1
Number of other retired or separated participants entitled to future benefits	2020-01-01	266
Total of all active and inactive participants	2020-01-01	671
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2020-01-01	0
Total participants	2020-01-01	671
Number of participants with account balances	2020-01-01	654
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2020-01-01	13
2019: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2019 401k membership
Total participants, beginning-of-year	2019-01-01	733
Total number of active participants reported on line 7a of the Form 5500	2019-01-01	384
Number of retired or separated participants receiving benefits	2019-01-01	4
Number of other retired or separated participants entitled to future benefits	2019-01-01	289
Total of all active and inactive participants	2019-01-01	677
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2019-01-01	1
Total participants	2019-01-01	678
Number of participants with account balances	2019-01-01	665
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2019-01-01	32
2018: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2018 401k membership
Total participants, beginning-of-year	2018-01-01	676
Total number of active participants reported on line 7a of the Form 5500	2018-01-01	479
Number of retired or separated participants receiving benefits	2018-01-01	4
Number of other retired or separated participants entitled to future benefits	2018-01-01	249
Total of all active and inactive participants	2018-01-01	732
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2018-01-01	1
Total participants	2018-01-01	733
Number of participants with account balances	2018-01-01	699
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2018-01-01	2
2017: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2017 401k membership
Total participants, beginning-of-year	2017-01-01	608
Total number of active participants reported on line 7a of the Form 5500	2017-01-01	412
Number of retired or separated participants receiving benefits	2017-01-01	4
Number of other retired or separated participants entitled to future benefits	2017-01-01	259
Total of all active and inactive participants	2017-01-01	675
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2017-01-01	1
Total participants	2017-01-01	676
Number of participants with account balances	2017-01-01	663
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2017-01-01	12
2016: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2016 401k membership
Total participants, beginning-of-year	2016-01-01	591
Total number of active participants reported on line 7a of the Form 5500	2016-01-01	477
Number of retired or separated participants receiving benefits	2016-01-01	4
Number of other retired or separated participants entitled to future benefits	2016-01-01	127
Total of all active and inactive participants	2016-01-01	608
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2016-01-01	0
Total participants	2016-01-01	608
Number of participants with account balances	2016-01-01	592
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2016-01-01	9
2015: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2015 401k membership
Total participants, beginning-of-year	2015-01-01	573
Total number of active participants reported on line 7a of the Form 5500	2015-01-01	470
Number of retired or separated participants receiving benefits	2015-01-01	4
Number of other retired or separated participants entitled to future benefits	2015-01-01	117
Total of all active and inactive participants	2015-01-01	591
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2015-01-01	0
Total participants	2015-01-01	591
Number of participants with account balances	2015-01-01	560
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2015-01-01	15
2014: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2014 401k membership
Total participants, beginning-of-year	2014-01-01	573
Total number of active participants reported on line 7a of the Form 5500	2014-01-01	450
Number of retired or separated participants receiving benefits	2014-01-01	3
Number of other retired or separated participants entitled to future benefits	2014-01-01	120
Total of all active and inactive participants	2014-01-01	573
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2014-01-01	0
Total participants	2014-01-01	573
Number of participants with account balances	2014-01-01	548
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2014-01-01	29
2013: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2013 401k membership
Total participants, beginning-of-year	2013-01-01	614
Total number of active participants reported on line 7a of the Form 5500	2013-01-01	468
Number of retired or separated participants receiving benefits	2013-01-01	1
Number of other retired or separated participants entitled to future benefits	2013-01-01	104
Total of all active and inactive participants	2013-01-01	573
Total participants	2013-01-01	573
Number of participants with account balances	2013-01-01	531
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2013-01-01	9
2012: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2012 401k membership
Total participants, beginning-of-year	2012-01-01	586
Total number of active participants reported on line 7a of the Form 5500	2012-01-01	466
Number of retired or separated participants receiving benefits	2012-01-01	2
Number of other retired or separated participants entitled to future benefits	2012-01-01	146
Total of all active and inactive participants	2012-01-01	614
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2012-01-01	0
Total participants	2012-01-01	614
Number of participants with account balances	2012-01-01	572
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2012-01-01	19
2011: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2011 401k membership
Total participants, beginning-of-year	2011-01-01	544
Total number of active participants reported on line 7a of the Form 5500	2011-01-01	448
Number of retired or separated participants receiving benefits	2011-01-01	6
Number of other retired or separated participants entitled to future benefits	2011-01-01	132
Total of all active and inactive participants	2011-01-01	586
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2011-01-01	0
Total participants	2011-01-01	586
Number of participants with account balances	2011-01-01	539
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2011-01-01	18
2009: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2009 401k membership
Total participants, beginning-of-year	2009-01-01	463
Total number of active participants reported on line 7a of the Form 5500	2009-01-01	392
Number of retired or separated participants receiving benefits	2009-01-01	5
Number of other retired or separated participants entitled to future benefits	2009-01-01	101
Total of all active and inactive participants	2009-01-01	498
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2009-01-01	0
Total participants	2009-01-01	498
Number of participants with account balances	2009-01-01	475
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2009-01-01	10

Financial Data on GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN

Measure	Date	Value
2022 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2022 401k financial data
Unrealized appreciation/depreciation of real estate assets	2022-12-31	$0
Unrealized appreciation/depreciation of other (non real estate) assets	2022-12-31	$0
Total unrealized appreciation/depreciation of assets	2022-12-31	$0
Total transfer of assets to this plan	2022-12-31	$1,029,232
Total transfer of assets from this plan	2022-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2022-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2022-12-31	$0
Expenses. Interest paid	2022-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2022-12-31	$0
Total income from all sources (including contributions)	2022-12-31	$-37,398,536
Total loss/gain on sale of assets	2022-12-31	$0
Total of all expenses incurred	2022-12-31	$8,181,921
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2022-12-31	$7,993,663
Expenses. Certain deemed distributions of participant loans	2022-12-31	$14,917
Value of total corrective distributions	2022-12-31	$3,051
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2022-12-31	$9,569,781
Value of total assets at end of year	2022-12-31	$171,100,161
Value of total assets at beginning of year	2022-12-31	$215,651,386
Total of administrative expenses incurred including professional, contract, advisory and management fees	2022-12-31	$170,290
Total income from rents	2022-12-31	$0
Total interest from all sources	2022-12-31	$59,813
Total dividends received (eg from common stock, registered investment company shares)	2022-12-31	$1,891,121
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2022-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2022-12-31	$1,891,121
Assets. Real estate other than employer real property at end of year	2022-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2022-12-31	$0
Administrative expenses professional fees incurred	2022-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2022-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2022-12-31	$0
Was this plan covered by a fidelity bond	2022-12-31	Yes
Value of fidelity bond cover	2022-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2022-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2022-12-31	No
Contributions received from participants	2022-12-31	$4,366,531
Participant contributions at end of year	2022-12-31	$970,822
Participant contributions at beginning of year	2022-12-31	$991,449
Participant contributions at end of year	2022-12-31	$0
Participant contributions at beginning of year	2022-12-31	$0
Assets. Other investments not covered elsewhere at end of year	2022-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2022-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2022-12-31	$850,896
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2022-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2022-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2022-12-31	$0
Assets. Loans (other than to participants) at end of year	2022-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2022-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2022-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2022-12-31	$0
Other income not declared elsewhere	2022-12-31	$0
Administrative expenses (other) incurred	2022-12-31	$123,832
Liabilities. Value of operating payables at end of year	2022-12-31	$0
Liabilities. Value of operating payables at beginning of year	2022-12-31	$0
Total non interest bearing cash at end of year	2022-12-31	$0
Total non interest bearing cash at beginning of year	2022-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2022-12-31	No
Income. Non cash contributions	2022-12-31	$0
Value of net income/loss	2022-12-31	$-45,580,457
Value of net assets at end of year (total assets less liabilities)	2022-12-31	$171,100,161
Value of net assets at beginning of year (total assets less liabilities)	2022-12-31	$215,651,386
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2022-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2022-12-31	No
Were any leases to which the plan was party in default or uncollectible	2022-12-31	No
Assets. partnership/joint venture interests at end of year	2022-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2022-12-31	$0
Investment advisory and management fees	2022-12-31	$46,458
Value of interest in registered invesment companies (eg mutual funds) at end of year	2022-12-31	$111,866,903
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2022-12-31	$147,809,669
Value of interest in pooled separate accounts at end of year	2022-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2022-12-31	$0
Interest on participant loans	2022-12-31	$47,457
Income. Interest from loans (other than to participants)	2022-12-31	$0
Interest earned on other investments	2022-12-31	$0
Income. Interest from US Government securities	2022-12-31	$0
Income. Interest from corporate debt instruments	2022-12-31	$0
Value of interest in master investment trust accounts at end of year	2022-12-31	$0
Value of interest in master investment trust accounts at beginning of year	2022-12-31	$0
Value of interest in common/collective trusts at end of year	2022-12-31	$57,232,867
Value of interest in common/collective trusts at beginning of year	2022-12-31	$65,697,396
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2022-12-31	$1,029,569
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2022-12-31	$1,152,872
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2022-12-31	$1,152,872
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2022-12-31	$12,356
Assets. Value of investments in 103.12 investment entities at end of year	2022-12-31	$0
Assets. Value of investments in 103.12 investment entities at beginning of year	2022-12-31	$0
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2022-12-31	$0
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2022-12-31	$0
Expenses. Payments to insurance carriers foe the provision of benefits	2022-12-31	$0
Asset value of US Government securities at end of year	2022-12-31	$0
Asset value of US Government securities at beginning of year	2022-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2022-12-31	$-39,237,288
Net investment gain/loss from pooled separate accounts	2022-12-31	$0
Net investment gain or loss from common/collective trusts	2022-12-31	$-9,681,963
Net gain/loss from 103.12 investment entities	2022-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2022-12-31	No
Was there a failure to transmit to the plan any participant contributions	2022-12-31	No
Has the plan failed to provide any benefit when due under the plan	2022-12-31	No
Assets. Invements in employer securities at end of year	2022-12-31	$0
Assets. Invements in employer securities at beginning of year	2022-12-31	$0
Assets. Value of employer real property at end of year	2022-12-31	$0
Assets. Value of employer real property at beginning of year	2022-12-31	$0
Contributions received in cash from employer	2022-12-31	$4,352,354
Employer contributions (assets) at end of year	2022-12-31	$0
Employer contributions (assets) at beginning of year	2022-12-31	$0
Income. Dividends from preferred stock	2022-12-31	$0
Income. Dividends from common stock	2022-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2022-12-31	$7,993,663
Asset. Corporate debt instrument preferred debt at end of year	2022-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2022-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2022-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2022-12-31	$0
Contract administrator fees	2022-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2022-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2022-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2022-12-31	$0
Liabilities. Value of benefit claims payable at end of year	2022-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2022-12-31	$0
Assets. Value of buildings and other operty used in plan operation at end of year	2022-12-31	$0
Assets. Value of buildings and other operty used in plan operation at beginning of year	2022-12-31	$0
Did the plan have assets held for investment	2022-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2022-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2022-12-31	No
Aggregate proceeds on sale of assets	2022-12-31	$0
Aggregate carrying amount (costs) on sale of assets	2022-12-31	$0
Liabilities. Value of acquisition indebtedness at end of year	2022-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2022-12-31	$0
Opinion of an independent qualified public accountant for this plan	2022-12-31	Unqualified
Accountancy firm name	2022-12-31	BAKER TILLY US, LLP
Accountancy firm EIN	2022-12-31	390859910
2021 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2021 401k financial data
Unrealized appreciation/depreciation of real estate assets	2021-12-31	$0
Unrealized appreciation/depreciation of other (non real estate) assets	2021-12-31	$0
Total unrealized appreciation/depreciation of assets	2021-12-31	$0
Total transfer of assets to this plan	2021-12-31	$17,253
Total transfer of assets from this plan	2021-12-31	$273
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2021-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2021-12-31	$0
Expenses. Interest paid	2021-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2021-12-31	$0
Total income from all sources (including contributions)	2021-12-31	$45,107,680
Total loss/gain on sale of assets	2021-12-31	$0
Total of all expenses incurred	2021-12-31	$38,286,844
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2021-12-31	$38,100,151
Expenses. Certain deemed distributions of participant loans	2021-12-31	$0
Value of total corrective distributions	2021-12-31	$14,181
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2021-12-31	$10,790,087
Value of total assets at end of year	2021-12-31	$215,651,386
Value of total assets at beginning of year	2021-12-31	$208,813,570
Total of administrative expenses incurred including professional, contract, advisory and management fees	2021-12-31	$172,512
Total income from rents	2021-12-31	$0
Total interest from all sources	2021-12-31	$55,255
Total dividends received (eg from common stock, registered investment company shares)	2021-12-31	$6,058,439
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2021-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2021-12-31	$6,058,439
Assets. Real estate other than employer real property at end of year	2021-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2021-12-31	$0
Administrative expenses professional fees incurred	2021-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2021-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2021-12-31	$0
Was this plan covered by a fidelity bond	2021-12-31	Yes
Value of fidelity bond cover	2021-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2021-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2021-12-31	No
Contributions received from participants	2021-12-31	$4,339,835
Participant contributions at end of year	2021-12-31	$991,449
Participant contributions at beginning of year	2021-12-31	$1,096,197
Participant contributions at end of year	2021-12-31	$0
Participant contributions at beginning of year	2021-12-31	$0
Assets. Other investments not covered elsewhere at end of year	2021-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2021-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2021-12-31	$1,196,983
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2021-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2021-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2021-12-31	$0
Assets. Loans (other than to participants) at end of year	2021-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2021-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2021-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2021-12-31	$0
Other income not declared elsewhere	2021-12-31	$0
Administrative expenses (other) incurred	2021-12-31	$130,544
Liabilities. Value of operating payables at end of year	2021-12-31	$0
Liabilities. Value of operating payables at beginning of year	2021-12-31	$0
Total non interest bearing cash at end of year	2021-12-31	$0
Total non interest bearing cash at beginning of year	2021-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2021-12-31	No
Income. Non cash contributions	2021-12-31	$0
Value of net income/loss	2021-12-31	$6,820,836
Value of net assets at end of year (total assets less liabilities)	2021-12-31	$215,651,386
Value of net assets at beginning of year (total assets less liabilities)	2021-12-31	$208,813,570
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2021-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2021-12-31	No
Were any leases to which the plan was party in default or uncollectible	2021-12-31	No
Assets. partnership/joint venture interests at end of year	2021-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2021-12-31	$0
Investment advisory and management fees	2021-12-31	$41,968
Value of interest in registered invesment companies (eg mutual funds) at end of year	2021-12-31	$147,809,669
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2021-12-31	$142,575,496
Value of interest in pooled separate accounts at end of year	2021-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2021-12-31	$0
Interest on participant loans	2021-12-31	$55,215
Income. Interest from loans (other than to participants)	2021-12-31	$0
Interest earned on other investments	2021-12-31	$0
Income. Interest from US Government securities	2021-12-31	$0
Income. Interest from corporate debt instruments	2021-12-31	$0
Value of interest in master investment trust accounts at end of year	2021-12-31	$0
Value of interest in master investment trust accounts at beginning of year	2021-12-31	$0
Value of interest in common/collective trusts at end of year	2021-12-31	$65,697,396
Value of interest in common/collective trusts at beginning of year	2021-12-31	$64,906,985
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2021-12-31	$1,152,872
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2021-12-31	$234,892
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2021-12-31	$234,892
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2021-12-31	$40
Assets. Value of investments in 103.12 investment entities at end of year	2021-12-31	$0
Assets. Value of investments in 103.12 investment entities at beginning of year	2021-12-31	$0
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2021-12-31	$0
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2021-12-31	$0
Expenses. Payments to insurance carriers foe the provision of benefits	2021-12-31	$0
Asset value of US Government securities at end of year	2021-12-31	$0
Asset value of US Government securities at beginning of year	2021-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2021-12-31	$21,000,442
Net investment gain/loss from pooled separate accounts	2021-12-31	$0
Net investment gain or loss from common/collective trusts	2021-12-31	$7,203,457
Net gain/loss from 103.12 investment entities	2021-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2021-12-31	No
Was there a failure to transmit to the plan any participant contributions	2021-12-31	No
Has the plan failed to provide any benefit when due under the plan	2021-12-31	No
Assets. Invements in employer securities at end of year	2021-12-31	$0
Assets. Invements in employer securities at beginning of year	2021-12-31	$0
Assets. Value of employer real property at end of year	2021-12-31	$0
Assets. Value of employer real property at beginning of year	2021-12-31	$0
Contributions received in cash from employer	2021-12-31	$5,253,269
Employer contributions (assets) at end of year	2021-12-31	$0
Employer contributions (assets) at beginning of year	2021-12-31	$0
Income. Dividends from preferred stock	2021-12-31	$0
Income. Dividends from common stock	2021-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2021-12-31	$38,100,151
Asset. Corporate debt instrument preferred debt at end of year	2021-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2021-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2021-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2021-12-31	$0
Contract administrator fees	2021-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2021-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2021-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2021-12-31	$0
Liabilities. Value of benefit claims payable at end of year	2021-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2021-12-31	$0
Assets. Value of buildings and other operty used in plan operation at end of year	2021-12-31	$0
Assets. Value of buildings and other operty used in plan operation at beginning of year	2021-12-31	$0
Did the plan have assets held for investment	2021-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2021-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2021-12-31	No
Aggregate proceeds on sale of assets	2021-12-31	$0
Aggregate carrying amount (costs) on sale of assets	2021-12-31	$0
Liabilities. Value of acquisition indebtedness at end of year	2021-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2021-12-31	$0
Opinion of an independent qualified public accountant for this plan	2021-12-31	Unqualified
Accountancy firm name	2021-12-31	BAKER TILLY US, LLP
Accountancy firm EIN	2021-12-31	390859910
2020 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2020 401k financial data
Unrealized appreciation/depreciation of real estate assets	2020-12-31	$0
Unrealized appreciation/depreciation of other (non real estate) assets	2020-12-31	$0
Total unrealized appreciation/depreciation of assets	2020-12-31	$0
Total transfer of assets to this plan	2020-12-31	$375,233
Total transfer of assets from this plan	2020-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2020-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2020-12-31	$0
Expenses. Interest paid	2020-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2020-12-31	$0
Total income from all sources (including contributions)	2020-12-31	$53,304,406
Total loss/gain on sale of assets	2020-12-31	$0
Total of all expenses incurred	2020-12-31	$17,031,206
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2020-12-31	$16,888,979
Expenses. Certain deemed distributions of participant loans	2020-12-31	$0
Value of total corrective distributions	2020-12-31	$0
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2020-12-31	$9,866,074
Value of total assets at end of year	2020-12-31	$208,813,570
Value of total assets at beginning of year	2020-12-31	$172,165,137
Total of administrative expenses incurred including professional, contract, advisory and management fees	2020-12-31	$142,227
Total income from rents	2020-12-31	$0
Total interest from all sources	2020-12-31	$54,596
Total dividends received (eg from common stock, registered investment company shares)	2020-12-31	$2,828,018
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2020-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2020-12-31	$2,828,018
Assets. Real estate other than employer real property at end of year	2020-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2020-12-31	$0
Administrative expenses professional fees incurred	2020-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2020-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2020-12-31	$0
Was this plan covered by a fidelity bond	2020-12-31	Yes
Value of fidelity bond cover	2020-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2020-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2020-12-31	No
Contributions received from participants	2020-12-31	$3,981,061
Participant contributions at end of year	2020-12-31	$1,096,197
Participant contributions at beginning of year	2020-12-31	$962,401
Participant contributions at end of year	2020-12-31	$0
Participant contributions at beginning of year	2020-12-31	$0
Assets. Other investments not covered elsewhere at end of year	2020-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2020-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2020-12-31	$955,539
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2020-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2020-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2020-12-31	$0
Assets. Loans (other than to participants) at end of year	2020-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2020-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2020-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2020-12-31	$0
Other income not declared elsewhere	2020-12-31	$0
Administrative expenses (other) incurred	2020-12-31	$93,043
Liabilities. Value of operating payables at end of year	2020-12-31	$0
Liabilities. Value of operating payables at beginning of year	2020-12-31	$0
Total non interest bearing cash at end of year	2020-12-31	$0
Total non interest bearing cash at beginning of year	2020-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2020-12-31	No
Income. Non cash contributions	2020-12-31	$0
Value of net income/loss	2020-12-31	$36,273,200
Value of net assets at end of year (total assets less liabilities)	2020-12-31	$208,813,570
Value of net assets at beginning of year (total assets less liabilities)	2020-12-31	$172,165,137
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2020-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2020-12-31	No
Were any leases to which the plan was party in default or uncollectible	2020-12-31	No
Assets. partnership/joint venture interests at end of year	2020-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2020-12-31	$0
Investment advisory and management fees	2020-12-31	$49,184
Value of interest in registered invesment companies (eg mutual funds) at end of year	2020-12-31	$142,575,496
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2020-12-31	$107,938,538
Value of interest in pooled separate accounts at end of year	2020-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2020-12-31	$0
Interest on participant loans	2020-12-31	$54,210
Income. Interest from loans (other than to participants)	2020-12-31	$0
Interest earned on other investments	2020-12-31	$0
Income. Interest from US Government securities	2020-12-31	$0
Income. Interest from corporate debt instruments	2020-12-31	$0
Value of interest in master investment trust accounts at end of year	2020-12-31	$0
Value of interest in master investment trust accounts at beginning of year	2020-12-31	$0
Value of interest in common/collective trusts at end of year	2020-12-31	$64,906,985
Value of interest in common/collective trusts at beginning of year	2020-12-31	$63,183,395
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2020-12-31	$234,892
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2020-12-31	$80,803
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2020-12-31	$80,803
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2020-12-31	$386
Assets. Value of investments in 103.12 investment entities at end of year	2020-12-31	$0
Assets. Value of investments in 103.12 investment entities at beginning of year	2020-12-31	$0
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2020-12-31	$0
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2020-12-31	$0
Expenses. Payments to insurance carriers foe the provision of benefits	2020-12-31	$0
Asset value of US Government securities at end of year	2020-12-31	$0
Asset value of US Government securities at beginning of year	2020-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2020-12-31	$33,327,664
Net investment gain/loss from pooled separate accounts	2020-12-31	$0
Net investment gain or loss from common/collective trusts	2020-12-31	$7,228,054
Net gain/loss from 103.12 investment entities	2020-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2020-12-31	No
Was there a failure to transmit to the plan any participant contributions	2020-12-31	No
Has the plan failed to provide any benefit when due under the plan	2020-12-31	No
Assets. Invements in employer securities at end of year	2020-12-31	$0
Assets. Invements in employer securities at beginning of year	2020-12-31	$0
Assets. Value of employer real property at end of year	2020-12-31	$0
Assets. Value of employer real property at beginning of year	2020-12-31	$0
Contributions received in cash from employer	2020-12-31	$4,929,474
Employer contributions (assets) at end of year	2020-12-31	$0
Employer contributions (assets) at beginning of year	2020-12-31	$0
Income. Dividends from preferred stock	2020-12-31	$0
Income. Dividends from common stock	2020-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2020-12-31	$16,888,979
Asset. Corporate debt instrument preferred debt at end of year	2020-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2020-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2020-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2020-12-31	$0
Contract administrator fees	2020-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2020-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2020-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2020-12-31	$0
Liabilities. Value of benefit claims payable at end of year	2020-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2020-12-31	$0
Assets. Value of buildings and other operty used in plan operation at end of year	2020-12-31	$0
Assets. Value of buildings and other operty used in plan operation at beginning of year	2020-12-31	$0
Did the plan have assets held for investment	2020-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2020-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2020-12-31	No
Aggregate proceeds on sale of assets	2020-12-31	$0
Aggregate carrying amount (costs) on sale of assets	2020-12-31	$0
Liabilities. Value of acquisition indebtedness at end of year	2020-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2020-12-31	$0
Opinion of an independent qualified public accountant for this plan	2020-12-31	Disclaimer
Accountancy firm name	2020-12-31	BAKER TILLY US, LLP
Accountancy firm EIN	2020-12-31	390859910
2019 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2019 401k financial data
Unrealized appreciation/depreciation of real estate assets	2019-12-31	$0
Unrealized appreciation/depreciation of other (non real estate) assets	2019-12-31	$0
Total unrealized appreciation/depreciation of assets	2019-12-31	$0
Total transfer of assets to this plan	2019-12-31	$96,978
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2019-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2019-12-31	$0
Expenses. Interest paid	2019-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2019-12-31	$0
Total income from all sources (including contributions)	2019-12-31	$47,222,669
Total loss/gain on sale of assets	2019-12-31	$0
Total of all expenses incurred	2019-12-31	$15,889,529
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2019-12-31	$15,782,882
Expenses. Certain deemed distributions of participant loans	2019-12-31	$21,982
Value of total corrective distributions	2019-12-31	$0
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2019-12-31	$10,589,266
Value of total assets at end of year	2019-12-31	$172,165,137
Value of total assets at beginning of year	2019-12-31	$140,735,019
Total of administrative expenses incurred including professional, contract, advisory and management fees	2019-12-31	$84,665
Total income from rents	2019-12-31	$0
Total interest from all sources	2019-12-31	$62,065
Total dividends received (eg from common stock, registered investment company shares)	2019-12-31	$5,103,542
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2019-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2019-12-31	$5,103,542
Assets. Real estate other than employer real property at end of year	2019-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2019-12-31	$0
Administrative expenses professional fees incurred	2019-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2019-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2019-12-31	$0
Was this plan covered by a fidelity bond	2019-12-31	Yes
Value of fidelity bond cover	2019-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2019-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2019-12-31	No
Contributions received from participants	2019-12-31	$4,066,415
Participant contributions at end of year	2019-12-31	$962,401
Participant contributions at beginning of year	2019-12-31	$1,242,010
Participant contributions at end of year	2019-12-31	$0
Participant contributions at beginning of year	2019-12-31	$0
Assets. Other investments not covered elsewhere at end of year	2019-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2019-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2019-12-31	$721,000
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2019-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2019-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2019-12-31	$0
Assets. Loans (other than to participants) at end of year	2019-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2019-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2019-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2019-12-31	$0
Other income not declared elsewhere	2019-12-31	$0
Administrative expenses (other) incurred	2019-12-31	$42,849
Liabilities. Value of operating payables at end of year	2019-12-31	$0
Liabilities. Value of operating payables at beginning of year	2019-12-31	$0
Total non interest bearing cash at end of year	2019-12-31	$0
Total non interest bearing cash at beginning of year	2019-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2019-12-31	No
Income. Non cash contributions	2019-12-31	$0
Value of net income/loss	2019-12-31	$31,333,140
Value of net assets at end of year (total assets less liabilities)	2019-12-31	$172,165,137
Value of net assets at beginning of year (total assets less liabilities)	2019-12-31	$140,735,019
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2019-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2019-12-31	No
Were any leases to which the plan was party in default or uncollectible	2019-12-31	No
Assets. partnership/joint venture interests at end of year	2019-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2019-12-31	$0
Investment advisory and management fees	2019-12-31	$41,816
Value of interest in registered invesment companies (eg mutual funds) at end of year	2019-12-31	$107,938,538
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2019-12-31	$91,859,065
Value of interest in pooled separate accounts at end of year	2019-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2019-12-31	$0
Interest on participant loans	2019-12-31	$60,272
Income. Interest from loans (other than to participants)	2019-12-31	$0
Interest earned on other investments	2019-12-31	$0
Income. Interest from US Government securities	2019-12-31	$0
Income. Interest from corporate debt instruments	2019-12-31	$0
Value of interest in master investment trust accounts at end of year	2019-12-31	$0
Value of interest in master investment trust accounts at beginning of year	2019-12-31	$0
Value of interest in common/collective trusts at end of year	2019-12-31	$63,183,395
Value of interest in common/collective trusts at beginning of year	2019-12-31	$47,567,141
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2019-12-31	$80,803
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2019-12-31	$66,803
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2019-12-31	$66,803
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2019-12-31	$1,793
Assets. Value of investments in 103.12 investment entities at end of year	2019-12-31	$0
Assets. Value of investments in 103.12 investment entities at beginning of year	2019-12-31	$0
Expenses. Payments to insurance carriers foe the provision of benefits	2019-12-31	$0
Asset value of US Government securities at end of year	2019-12-31	$0
Asset value of US Government securities at beginning of year	2019-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2019-12-31	$22,718,192
Net investment gain/loss from pooled separate accounts	2019-12-31	$0
Net investment gain or loss from common/collective trusts	2019-12-31	$8,749,604
Net gain/loss from 103.12 investment entities	2019-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2019-12-31	No
Was there a failure to transmit to the plan any participant contributions	2019-12-31	No
Has the plan failed to provide any benefit when due under the plan	2019-12-31	No
Assets. Invements in employer securities at end of year	2019-12-31	$0
Assets. Invements in employer securities at beginning of year	2019-12-31	$0
Assets. Value of employer real property at end of year	2019-12-31	$0
Assets. Value of employer real property at beginning of year	2019-12-31	$0
Contributions received in cash from employer	2019-12-31	$5,801,851
Employer contributions (assets) at end of year	2019-12-31	$0
Employer contributions (assets) at beginning of year	2019-12-31	$0
Income. Dividends from preferred stock	2019-12-31	$0
Income. Dividends from common stock	2019-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2019-12-31	$15,782,882
Asset. Corporate debt instrument preferred debt at end of year	2019-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2019-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2019-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2019-12-31	$0
Contract administrator fees	2019-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2019-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2019-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2019-12-31	$0
Liabilities. Value of benefit claims payable at end of year	2019-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2019-12-31	$0
Assets. Value of buildings and other operty used in plan operation at end of year	2019-12-31	$0
Assets. Value of buildings and other operty used in plan operation at beginning of year	2019-12-31	$0
Did the plan have assets held for investment	2019-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2019-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2019-12-31	No
Aggregate proceeds on sale of assets	2019-12-31	$0
Aggregate carrying amount (costs) on sale of assets	2019-12-31	$0
Liabilities. Value of acquisition indebtedness at end of year	2019-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2019-12-31	$0
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2019-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2019-12-31	Disclaimer
Accountancy firm name	2019-12-31	BAKER TILLY VIRCHOW KRAUSE, LLP
Accountancy firm EIN	2019-12-31	390859910
2018 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2018 401k financial data
Unrealized appreciation/depreciation of real estate assets	2018-12-31	$0
Unrealized appreciation/depreciation of other (non real estate) assets	2018-12-31	$0
Total unrealized appreciation/depreciation of assets	2018-12-31	$0
Total transfer of assets to this plan	2018-12-31	$439,882
Total transfer of assets from this plan	2018-12-31	$1,048,697
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2018-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2018-12-31	$0
Expenses. Interest paid	2018-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2018-12-31	$0
Total income from all sources (including contributions)	2018-12-31	$-1,373,448
Total loss/gain on sale of assets	2018-12-31	$0
Total of all expenses incurred	2018-12-31	$16,107,837
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2018-12-31	$16,025,897
Expenses. Certain deemed distributions of participant loans	2018-12-31	$0
Value of total corrective distributions	2018-12-31	$0
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2018-12-31	$7,215,331
Value of total assets at end of year	2018-12-31	$140,735,019
Value of total assets at beginning of year	2018-12-31	$158,825,119
Total of administrative expenses incurred including professional, contract, advisory and management fees	2018-12-31	$81,940
Total income from rents	2018-12-31	$0
Total interest from all sources	2018-12-31	$69,761
Total dividends received (eg from common stock, registered investment company shares)	2018-12-31	$5,140,122
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2018-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2018-12-31	$5,140,122
Assets. Real estate other than employer real property at end of year	2018-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2018-12-31	$0
Administrative expenses professional fees incurred	2018-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2018-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2018-12-31	$0
Was this plan covered by a fidelity bond	2018-12-31	Yes
Value of fidelity bond cover	2018-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2018-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2018-12-31	No
Contributions received from participants	2018-12-31	$4,444,282
Participant contributions at end of year	2018-12-31	$1,242,010
Participant contributions at beginning of year	2018-12-31	$1,538,183
Participant contributions at end of year	2018-12-31	$0
Participant contributions at beginning of year	2018-12-31	$0
Assets. Other investments not covered elsewhere at end of year	2018-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2018-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2018-12-31	$92,113
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2018-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2018-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2018-12-31	$0
Assets. Loans (other than to participants) at end of year	2018-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2018-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2018-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2018-12-31	$0
Other income not declared elsewhere	2018-12-31	$0
Administrative expenses (other) incurred	2018-12-31	$45,830
Liabilities. Value of operating payables at end of year	2018-12-31	$0
Liabilities. Value of operating payables at beginning of year	2018-12-31	$0
Total non interest bearing cash at end of year	2018-12-31	$0
Total non interest bearing cash at beginning of year	2018-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2018-12-31	No
Income. Non cash contributions	2018-12-31	$0
Value of net income/loss	2018-12-31	$-17,481,285
Value of net assets at end of year (total assets less liabilities)	2018-12-31	$140,735,019
Value of net assets at beginning of year (total assets less liabilities)	2018-12-31	$158,825,119
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2018-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2018-12-31	No
Were any leases to which the plan was party in default or uncollectible	2018-12-31	No
Assets. partnership/joint venture interests at end of year	2018-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2018-12-31	$0
Investment advisory and management fees	2018-12-31	$36,110
Value of interest in registered invesment companies (eg mutual funds) at end of year	2018-12-31	$91,859,065
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2018-12-31	$149,636,756
Value of interest in pooled separate accounts at end of year	2018-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2018-12-31	$0
Interest on participant loans	2018-12-31	$67,020
Income. Interest from loans (other than to participants)	2018-12-31	$0
Interest earned on other investments	2018-12-31	$0
Income. Interest from US Government securities	2018-12-31	$0
Income. Interest from corporate debt instruments	2018-12-31	$0
Value of interest in master investment trust accounts at end of year	2018-12-31	$0
Value of interest in master investment trust accounts at beginning of year	2018-12-31	$0
Value of interest in common/collective trusts at end of year	2018-12-31	$47,567,141
Value of interest in common/collective trusts at beginning of year	2018-12-31	$7,582,944
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2018-12-31	$66,803
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2018-12-31	$67,236
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2018-12-31	$67,236
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2018-12-31	$2,741
Assets. Value of investments in 103.12 investment entities at end of year	2018-12-31	$0
Assets. Value of investments in 103.12 investment entities at beginning of year	2018-12-31	$0
Expenses. Payments to insurance carriers foe the provision of benefits	2018-12-31	$0
Asset value of US Government securities at end of year	2018-12-31	$0
Asset value of US Government securities at beginning of year	2018-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2018-12-31	$-8,786,268
Net investment gain/loss from pooled separate accounts	2018-12-31	$0
Net investment gain or loss from common/collective trusts	2018-12-31	$-5,012,394
Net gain/loss from 103.12 investment entities	2018-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2018-12-31	No
Was there a failure to transmit to the plan any participant contributions	2018-12-31	No
Has the plan failed to provide any benefit when due under the plan	2018-12-31	No
Assets. Invements in employer securities at end of year	2018-12-31	$0
Assets. Invements in employer securities at beginning of year	2018-12-31	$0
Assets. Value of employer real property at end of year	2018-12-31	$0
Assets. Value of employer real property at beginning of year	2018-12-31	$0
Contributions received in cash from employer	2018-12-31	$2,678,936
Employer contributions (assets) at end of year	2018-12-31	$0
Employer contributions (assets) at beginning of year	2018-12-31	$0
Income. Dividends from preferred stock	2018-12-31	$0
Income. Dividends from common stock	2018-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2018-12-31	$16,025,897
Asset. Corporate debt instrument preferred debt at end of year	2018-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2018-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2018-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2018-12-31	$0
Contract administrator fees	2018-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2018-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2018-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2018-12-31	$0
Liabilities. Value of benefit claims payable at end of year	2018-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2018-12-31	$0
Assets. Value of buildings and other operty used in plan operation at end of year	2018-12-31	$0
Assets. Value of buildings and other operty used in plan operation at beginning of year	2018-12-31	$0
Did the plan have assets held for investment	2018-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2018-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2018-12-31	No
Aggregate proceeds on sale of assets	2018-12-31	$0
Aggregate carrying amount (costs) on sale of assets	2018-12-31	$0
Liabilities. Value of acquisition indebtedness at end of year	2018-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2018-12-31	$0
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2018-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2018-12-31	Disclaimer
Accountancy firm name	2018-12-31	BAKER TILLY VIRCHOW KRAUSE, LLP
Accountancy firm EIN	2018-12-31	390859910
2017 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2017 401k financial data
Unrealized appreciation/depreciation of real estate assets	2017-12-31	$0
Unrealized appreciation/depreciation of other (non real estate) assets	2017-12-31	$0
Total unrealized appreciation/depreciation of assets	2017-12-31	$0
Total transfer of assets to this plan	2017-12-31	$7,397,306
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2017-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2017-12-31	$0
Expenses. Interest paid	2017-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2017-12-31	$0
Total income from all sources (including contributions)	2017-12-31	$33,697,363
Total loss/gain on sale of assets	2017-12-31	$0
Total of all expenses incurred	2017-12-31	$6,166,269
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2017-12-31	$6,069,180
Expenses. Certain deemed distributions of participant loans	2017-12-31	$4,868
Value of total corrective distributions	2017-12-31	$0
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2017-12-31	$6,706,444
Value of total assets at end of year	2017-12-31	$158,825,119
Value of total assets at beginning of year	2017-12-31	$123,896,719
Total of administrative expenses incurred including professional, contract, advisory and management fees	2017-12-31	$92,221
Total income from rents	2017-12-31	$0
Total interest from all sources	2017-12-31	$63,077
Total dividends received (eg from common stock, registered investment company shares)	2017-12-31	$5,612,474
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2017-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2017-12-31	$5,612,474
Assets. Real estate other than employer real property at end of year	2017-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2017-12-31	$0
Administrative expenses professional fees incurred	2017-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2017-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2017-12-31	$0
Was this plan covered by a fidelity bond	2017-12-31	Yes
Value of fidelity bond cover	2017-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2017-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2017-12-31	No
Contributions received from participants	2017-12-31	$3,791,192
Participant contributions at end of year	2017-12-31	$1,538,183
Participant contributions at beginning of year	2017-12-31	$1,552,112
Participant contributions at end of year	2017-12-31	$0
Participant contributions at beginning of year	2017-12-31	$0
Assets. Other investments not covered elsewhere at end of year	2017-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2017-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2017-12-31	$545,806
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2017-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2017-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2017-12-31	$0
Assets. Loans (other than to participants) at end of year	2017-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2017-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2017-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2017-12-31	$0
Other income not declared elsewhere	2017-12-31	$0
Administrative expenses (other) incurred	2017-12-31	$70,195
Liabilities. Value of operating payables at end of year	2017-12-31	$0
Liabilities. Value of operating payables at beginning of year	2017-12-31	$0
Total non interest bearing cash at end of year	2017-12-31	$0
Total non interest bearing cash at beginning of year	2017-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2017-12-31	No
Income. Non cash contributions	2017-12-31	$0
Value of net income/loss	2017-12-31	$27,531,094
Value of net assets at end of year (total assets less liabilities)	2017-12-31	$158,825,119
Value of net assets at beginning of year (total assets less liabilities)	2017-12-31	$123,896,719
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2017-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2017-12-31	No
Were any leases to which the plan was party in default or uncollectible	2017-12-31	No
Assets. partnership/joint venture interests at end of year	2017-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2017-12-31	$0
Investment advisory and management fees	2017-12-31	$22,026
Value of interest in registered invesment companies (eg mutual funds) at end of year	2017-12-31	$149,636,756
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2017-12-31	$0
Value of interest in pooled separate accounts at end of year	2017-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2017-12-31	$0
Interest on participant loans	2017-12-31	$61,673
Income. Interest from loans (other than to participants)	2017-12-31	$0
Interest earned on other investments	2017-12-31	$0
Income. Interest from US Government securities	2017-12-31	$0
Income. Interest from corporate debt instruments	2017-12-31	$0
Value of interest in master investment trust accounts at end of year	2017-12-31	$0
Value of interest in master investment trust accounts at beginning of year	2017-12-31	$122,344,607
Value of interest in common/collective trusts at end of year	2017-12-31	$7,582,944
Value of interest in common/collective trusts at beginning of year	2017-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2017-12-31	$67,236
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2017-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2017-12-31	$0
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2017-12-31	$1,404
Assets. Value of investments in 103.12 investment entities at end of year	2017-12-31	$0
Assets. Value of investments in 103.12 investment entities at beginning of year	2017-12-31	$0
Expenses. Payments to insurance carriers foe the provision of benefits	2017-12-31	$0
Asset value of US Government securities at end of year	2017-12-31	$0
Asset value of US Government securities at beginning of year	2017-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2017-12-31	$21,243,154
Net investment gain/loss from pooled separate accounts	2017-12-31	$0
Net investment gain or loss from common/collective trusts	2017-12-31	$72,214
Net gain/loss from 103.12 investment entities	2017-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2017-12-31	No
Was there a failure to transmit to the plan any participant contributions	2017-12-31	No
Has the plan failed to provide any benefit when due under the plan	2017-12-31	No
Assets. Invements in employer securities at end of year	2017-12-31	$0
Assets. Invements in employer securities at beginning of year	2017-12-31	$0
Assets. Value of employer real property at end of year	2017-12-31	$0
Assets. Value of employer real property at beginning of year	2017-12-31	$0
Contributions received in cash from employer	2017-12-31	$2,369,446
Employer contributions (assets) at end of year	2017-12-31	$0
Employer contributions (assets) at beginning of year	2017-12-31	$0
Income. Dividends from preferred stock	2017-12-31	$0
Income. Dividends from common stock	2017-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2017-12-31	$6,069,180
Asset. Corporate debt instrument preferred debt at end of year	2017-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2017-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2017-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2017-12-31	$0
Contract administrator fees	2017-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2017-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2017-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2017-12-31	$0
Liabilities. Value of benefit claims payable at end of year	2017-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2017-12-31	$0
Assets. Value of buildings and other operty used in plan operation at end of year	2017-12-31	$0
Assets. Value of buildings and other operty used in plan operation at beginning of year	2017-12-31	$0
Did the plan have assets held for investment	2017-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2017-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2017-12-31	No
Aggregate proceeds on sale of assets	2017-12-31	$0
Aggregate carrying amount (costs) on sale of assets	2017-12-31	$0
Liabilities. Value of acquisition indebtedness at end of year	2017-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2017-12-31	$0
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2017-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2017-12-31	Disclaimer
Accountancy firm name	2017-12-31	BAKER TILLY VIRCHOW KRAUSE, LLP
Accountancy firm EIN	2017-12-31	390859910
2016 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2016 401k financial data
Unrealized appreciation/depreciation of real estate assets	2016-12-31	$0
Unrealized appreciation/depreciation of other (non real estate) assets	2016-12-31	$0
Total unrealized appreciation/depreciation of assets	2016-12-31	$0
Total transfer of assets to this plan	2016-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2016-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2016-12-31	$0
Expenses. Interest paid	2016-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2016-12-31	$0
Total income from all sources (including contributions)	2016-12-31	$18,235,261
Total loss/gain on sale of assets	2016-12-31	$0
Total of all expenses incurred	2016-12-31	$6,113,978
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2016-12-31	$6,077,871
Expenses. Certain deemed distributions of participant loans	2016-12-31	$0
Value of total corrective distributions	2016-12-31	$2,963
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2016-12-31	$10,439,277
Value of total assets at end of year	2016-12-31	$123,896,719
Value of total assets at beginning of year	2016-12-31	$111,775,436
Total of administrative expenses incurred including professional, contract, advisory and management fees	2016-12-31	$33,144
Total income from rents	2016-12-31	$0
Total interest from all sources	2016-12-31	$62,774
Total dividends received (eg from common stock, registered investment company shares)	2016-12-31	$0
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2016-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2016-12-31	$0
Assets. Real estate other than employer real property at end of year	2016-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2016-12-31	$0
Administrative expenses professional fees incurred	2016-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2016-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2016-12-31	$0
Was this plan covered by a fidelity bond	2016-12-31	Yes
Value of fidelity bond cover	2016-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2016-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2016-12-31	No
Contributions received from participants	2016-12-31	$3,897,910
Participant contributions at end of year	2016-12-31	$1,552,112
Participant contributions at beginning of year	2016-12-31	$1,365,614
Participant contributions at end of year	2016-12-31	$0
Participant contributions at beginning of year	2016-12-31	$0
Assets. Other investments not covered elsewhere at end of year	2016-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2016-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2016-12-31	$90,630
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2016-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2016-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2016-12-31	$0
Assets. Loans (other than to participants) at end of year	2016-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2016-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2016-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2016-12-31	$0
Other income not declared elsewhere	2016-12-31	$0
Administrative expenses (other) incurred	2016-12-31	$21,852
Liabilities. Value of operating payables at end of year	2016-12-31	$0
Liabilities. Value of operating payables at beginning of year	2016-12-31	$0
Total non interest bearing cash at end of year	2016-12-31	$0
Total non interest bearing cash at beginning of year	2016-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2016-12-31	No
Income. Non cash contributions	2016-12-31	$0
Value of net income/loss	2016-12-31	$12,121,283
Value of net assets at end of year (total assets less liabilities)	2016-12-31	$123,896,719
Value of net assets at beginning of year (total assets less liabilities)	2016-12-31	$111,775,436
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2016-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2016-12-31	No
Were any leases to which the plan was party in default or uncollectible	2016-12-31	No
Assets. partnership/joint venture interests at end of year	2016-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2016-12-31	$0
Investment advisory and management fees	2016-12-31	$11,292
Value of interest in registered invesment companies (eg mutual funds) at end of year	2016-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2016-12-31	$0
Value of interest in pooled separate accounts at end of year	2016-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2016-12-31	$0
Interest on participant loans	2016-12-31	$62,774
Income. Interest from loans (other than to participants)	2016-12-31	$0
Interest earned on other investments	2016-12-31	$0
Income. Interest from US Government securities	2016-12-31	$0
Income. Interest from corporate debt instruments	2016-12-31	$0
Value of interest in master investment trust accounts at end of year	2016-12-31	$122,344,607
Value of interest in master investment trust accounts at beginning of year	2016-12-31	$110,409,822
Value of interest in common/collective trusts at end of year	2016-12-31	$0
Value of interest in common/collective trusts at beginning of year	2016-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2016-12-31	$0
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2016-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2016-12-31	$0
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2016-12-31	$0
Assets. Value of investments in 103.12 investment entities at end of year	2016-12-31	$0
Assets. Value of investments in 103.12 investment entities at beginning of year	2016-12-31	$0
Expenses. Payments to insurance carriers foe the provision of benefits	2016-12-31	$0
Asset value of US Government securities at end of year	2016-12-31	$0
Asset value of US Government securities at beginning of year	2016-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2016-12-31	$0
Net investment gain/loss from pooled separate accounts	2016-12-31	$0
Net investment gain or loss from common/collective trusts	2016-12-31	$0
Net gain/loss from 103.12 investment entities	2016-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2016-12-31	No
Was there a failure to transmit to the plan any participant contributions	2016-12-31	No
Has the plan failed to provide any benefit when due under the plan	2016-12-31	No
Assets. Invements in employer securities at end of year	2016-12-31	$0
Assets. Invements in employer securities at beginning of year	2016-12-31	$0
Assets. Value of employer real property at end of year	2016-12-31	$0
Assets. Value of employer real property at beginning of year	2016-12-31	$0
Contributions received in cash from employer	2016-12-31	$6,450,737
Employer contributions (assets) at end of year	2016-12-31	$0
Employer contributions (assets) at beginning of year	2016-12-31	$0
Income. Dividends from preferred stock	2016-12-31	$0
Income. Dividends from common stock	2016-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2016-12-31	$6,077,871
Asset. Corporate debt instrument preferred debt at end of year	2016-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2016-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2016-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2016-12-31	$0
Contract administrator fees	2016-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2016-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2016-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2016-12-31	$0
Liabilities. Value of benefit claims payable at end of year	2016-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2016-12-31	$0
Assets. Value of buildings and other operty used in plan operation at end of year	2016-12-31	$0
Assets. Value of buildings and other operty used in plan operation at beginning of year	2016-12-31	$0
Did the plan have assets held for investment	2016-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2016-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2016-12-31	No
Aggregate proceeds on sale of assets	2016-12-31	$0
Aggregate carrying amount (costs) on sale of assets	2016-12-31	$0
Liabilities. Value of acquisition indebtedness at end of year	2016-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2016-12-31	$0
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2016-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2016-12-31	Disclaimer
Accountancy firm name	2016-12-31	BAKER TILLY VIRCHOW KRAUSE, LLP
Accountancy firm EIN	2016-12-31	390859910
2015 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2015 401k financial data
Unrealized appreciation/depreciation of real estate assets	2015-12-31	$0
Unrealized appreciation/depreciation of other (non real estate) assets	2015-12-31	$0
Total unrealized appreciation/depreciation of assets	2015-12-31	$0
Total transfer of assets to this plan	2015-12-31	$368,356
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2015-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2015-12-31	$0
Expenses. Interest paid	2015-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2015-12-31	$0
Total income from all sources (including contributions)	2015-12-31	$11,394,261
Total loss/gain on sale of assets	2015-12-31	$0
Total of all expenses incurred	2015-12-31	$8,136,412
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2015-12-31	$8,171,310
Expenses. Certain deemed distributions of participant loans	2015-12-31	$0
Value of total corrective distributions	2015-12-31	$0
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2015-12-31	$8,858,416
Value of total assets at end of year	2015-12-31	$111,775,436
Value of total assets at beginning of year	2015-12-31	$108,149,231
Total of administrative expenses incurred including professional, contract, advisory and management fees	2015-12-31	$-34,898
Total income from rents	2015-12-31	$0
Total interest from all sources	2015-12-31	$54,067
Total dividends received (eg from common stock, registered investment company shares)	2015-12-31	$0
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2015-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2015-12-31	$0
Assets. Real estate other than employer real property at end of year	2015-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2015-12-31	$0
Administrative expenses professional fees incurred	2015-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2015-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2015-12-31	$0
Was this plan covered by a fidelity bond	2015-12-31	Yes
Value of fidelity bond cover	2015-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2015-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2015-12-31	No
Contributions received from participants	2015-12-31	$3,597,177
Participant contributions at end of year	2015-12-31	$1,365,614
Participant contributions at beginning of year	2015-12-31	$1,227,365
Participant contributions at end of year	2015-12-31	$0
Participant contributions at beginning of year	2015-12-31	$0
Assets. Other investments not covered elsewhere at end of year	2015-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2015-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2015-12-31	$358,791
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2015-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2015-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2015-12-31	$0
Assets. Loans (other than to participants) at end of year	2015-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2015-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2015-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2015-12-31	$0
Other income not declared elsewhere	2015-12-31	$0
Administrative expenses (other) incurred	2015-12-31	$-36,173
Liabilities. Value of operating payables at end of year	2015-12-31	$0
Liabilities. Value of operating payables at beginning of year	2015-12-31	$0
Total non interest bearing cash at end of year	2015-12-31	$0
Total non interest bearing cash at beginning of year	2015-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2015-12-31	No
Income. Non cash contributions	2015-12-31	$0
Value of net income/loss	2015-12-31	$3,257,849
Value of net assets at end of year (total assets less liabilities)	2015-12-31	$111,775,436
Value of net assets at beginning of year (total assets less liabilities)	2015-12-31	$108,149,231
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2015-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2015-12-31	No
Were any leases to which the plan was party in default or uncollectible	2015-12-31	No
Assets. partnership/joint venture interests at end of year	2015-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2015-12-31	$0
Investment advisory and management fees	2015-12-31	$1,275
Value of interest in registered invesment companies (eg mutual funds) at end of year	2015-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2015-12-31	$0
Value of interest in pooled separate accounts at end of year	2015-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2015-12-31	$0
Interest on participant loans	2015-12-31	$54,067
Income. Interest from loans (other than to participants)	2015-12-31	$0
Interest earned on other investments	2015-12-31	$0
Income. Interest from US Government securities	2015-12-31	$0
Income. Interest from corporate debt instruments	2015-12-31	$0
Value of interest in master investment trust accounts at end of year	2015-12-31	$110,409,822
Value of interest in master investment trust accounts at beginning of year	2015-12-31	$106,921,866
Value of interest in common/collective trusts at end of year	2015-12-31	$0
Value of interest in common/collective trusts at beginning of year	2015-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2015-12-31	$0
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2015-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2015-12-31	$0
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2015-12-31	$0
Assets. Value of investments in 103.12 investment entities at end of year	2015-12-31	$0
Assets. Value of investments in 103.12 investment entities at beginning of year	2015-12-31	$0
Expenses. Payments to insurance carriers foe the provision of benefits	2015-12-31	$0
Asset value of US Government securities at end of year	2015-12-31	$0
Asset value of US Government securities at beginning of year	2015-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2015-12-31	$0
Net investment gain/loss from pooled separate accounts	2015-12-31	$0
Net investment gain or loss from common/collective trusts	2015-12-31	$0
Net gain/loss from 103.12 investment entities	2015-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2015-12-31	No
Was there a failure to transmit to the plan any participant contributions	2015-12-31	No
Has the plan failed to provide any benefit when due under the plan	2015-12-31	No
Assets. Invements in employer securities at end of year	2015-12-31	$0
Assets. Invements in employer securities at beginning of year	2015-12-31	$0
Assets. Value of employer real property at end of year	2015-12-31	$0
Assets. Value of employer real property at beginning of year	2015-12-31	$0
Contributions received in cash from employer	2015-12-31	$4,902,448
Employer contributions (assets) at end of year	2015-12-31	$0
Employer contributions (assets) at beginning of year	2015-12-31	$0
Income. Dividends from preferred stock	2015-12-31	$0
Income. Dividends from common stock	2015-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2015-12-31	$8,171,310
Asset. Corporate debt instrument preferred debt at end of year	2015-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2015-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2015-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2015-12-31	$0
Contract administrator fees	2015-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2015-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2015-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2015-12-31	$0
Liabilities. Value of benefit claims payable at end of year	2015-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2015-12-31	$0
Assets. Value of buildings and other operty used in plan operation at end of year	2015-12-31	$0
Assets. Value of buildings and other operty used in plan operation at beginning of year	2015-12-31	$0
Did the plan have assets held for investment	2015-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2015-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2015-12-31	No
Aggregate proceeds on sale of assets	2015-12-31	$0
Aggregate carrying amount (costs) on sale of assets	2015-12-31	$0
Liabilities. Value of acquisition indebtedness at end of year	2015-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2015-12-31	$0
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2015-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2015-12-31	Disclaimer
Accountancy firm name	2015-12-31	BAKER TILLY VIRCHOW KRAUSE, LLP
Accountancy firm EIN	2015-12-31	390859910
2014 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2014 401k financial data
Unrealized appreciation/depreciation of real estate assets	2014-12-31	$0
Unrealized appreciation/depreciation of other (non real estate) assets	2014-12-31	$0
Total unrealized appreciation/depreciation of assets	2014-12-31	$0
Total transfer of assets to this plan	2014-12-31	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2014-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2014-12-31	$0
Expenses. Interest paid	2014-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2014-12-31	$0
Total income from all sources (including contributions)	2014-12-31	$17,521,124
Total loss/gain on sale of assets	2014-12-31	$0
Total of all expenses incurred	2014-12-31	$12,306,939
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2014-12-31	$12,332,430
Expenses. Certain deemed distributions of participant loans	2014-12-31	$0
Value of total corrective distributions	2014-12-31	$0
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2014-12-31	$8,951,303
Value of total assets at end of year	2014-12-31	$108,149,231
Value of total assets at beginning of year	2014-12-31	$102,935,046
Total of administrative expenses incurred including professional, contract, advisory and management fees	2014-12-31	$-25,491
Total income from rents	2014-12-31	$0
Total interest from all sources	2014-12-31	$59,671
Total dividends received (eg from common stock, registered investment company shares)	2014-12-31	$0
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2014-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2014-12-31	$0
Assets. Real estate other than employer real property at end of year	2014-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2014-12-31	$0
Administrative expenses professional fees incurred	2014-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2014-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2014-12-31	$0
Was this plan covered by a fidelity bond	2014-12-31	Yes
Value of fidelity bond cover	2014-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2014-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2014-12-31	No
Contributions received from participants	2014-12-31	$3,493,229
Participant contributions at end of year	2014-12-31	$1,227,365
Participant contributions at beginning of year	2014-12-31	$1,558,721
Participant contributions at end of year	2014-12-31	$0
Participant contributions at beginning of year	2014-12-31	$0
Assets. Other investments not covered elsewhere at end of year	2014-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2014-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2014-12-31	$653,845
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2014-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2014-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2014-12-31	$0
Assets. Loans (other than to participants) at end of year	2014-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2014-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2014-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2014-12-31	$0
Other income not declared elsewhere	2014-12-31	$0
Administrative expenses (other) incurred	2014-12-31	$-25,491
Liabilities. Value of operating payables at end of year	2014-12-31	$0
Liabilities. Value of operating payables at beginning of year	2014-12-31	$0
Total non interest bearing cash at end of year	2014-12-31	$0
Total non interest bearing cash at beginning of year	2014-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2014-12-31	No
Income. Non cash contributions	2014-12-31	$0
Value of net income/loss	2014-12-31	$5,214,185
Value of net assets at end of year (total assets less liabilities)	2014-12-31	$108,149,231
Value of net assets at beginning of year (total assets less liabilities)	2014-12-31	$102,935,046
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2014-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2014-12-31	No
Were any leases to which the plan was party in default or uncollectible	2014-12-31	No
Assets. partnership/joint venture interests at end of year	2014-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2014-12-31	$0
Investment advisory and management fees	2014-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2014-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2014-12-31	$0
Value of interest in pooled separate accounts at end of year	2014-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2014-12-31	$0
Interest on participant loans	2014-12-31	$59,671
Income. Interest from loans (other than to participants)	2014-12-31	$0
Interest earned on other investments	2014-12-31	$0
Income. Interest from US Government securities	2014-12-31	$0
Income. Interest from corporate debt instruments	2014-12-31	$0
Value of interest in master investment trust accounts at end of year	2014-12-31	$106,921,866
Value of interest in master investment trust accounts at beginning of year	2014-12-31	$101,261,299
Value of interest in common/collective trusts at end of year	2014-12-31	$0
Value of interest in common/collective trusts at beginning of year	2014-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2014-12-31	$0
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2014-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2014-12-31	$0
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2014-12-31	$0
Assets. Value of investments in 103.12 investment entities at end of year	2014-12-31	$0
Assets. Value of investments in 103.12 investment entities at beginning of year	2014-12-31	$0
Expenses. Payments to insurance carriers foe the provision of benefits	2014-12-31	$0
Asset value of US Government securities at end of year	2014-12-31	$0
Asset value of US Government securities at beginning of year	2014-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2014-12-31	$0
Net investment gain/loss from pooled separate accounts	2014-12-31	$0
Net investment gain or loss from common/collective trusts	2014-12-31	$0
Net gain/loss from 103.12 investment entities	2014-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2014-12-31	No
Was there a failure to transmit to the plan any participant contributions	2014-12-31	No
Has the plan failed to provide any benefit when due under the plan	2014-12-31	No
Assets. Invements in employer securities at end of year	2014-12-31	$0
Assets. Invements in employer securities at beginning of year	2014-12-31	$0
Assets. Value of employer real property at end of year	2014-12-31	$0
Assets. Value of employer real property at beginning of year	2014-12-31	$0
Contributions received in cash from employer	2014-12-31	$4,804,229
Employer contributions (assets) at end of year	2014-12-31	$0
Employer contributions (assets) at beginning of year	2014-12-31	$115,026
Income. Dividends from preferred stock	2014-12-31	$0
Income. Dividends from common stock	2014-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2014-12-31	$12,332,430
Asset. Corporate debt instrument preferred debt at end of year	2014-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2014-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2014-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2014-12-31	$0
Contract administrator fees	2014-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2014-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2014-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2014-12-31	$0
Liabilities. Value of benefit claims payable at end of year	2014-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2014-12-31	$0
Assets. Value of buildings and other operty used in plan operation at end of year	2014-12-31	$0
Assets. Value of buildings and other operty used in plan operation at beginning of year	2014-12-31	$0
Did the plan have assets held for investment	2014-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2014-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2014-12-31	No
Aggregate proceeds on sale of assets	2014-12-31	$0
Aggregate carrying amount (costs) on sale of assets	2014-12-31	$0
Liabilities. Value of acquisition indebtedness at end of year	2014-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2014-12-31	$0
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2014-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2014-12-31	Disclaimer
Accountancy firm name	2014-12-31	CROWE HOWATH, LLP
Accountancy firm EIN	2014-12-31	350921680
2013 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2013 401k financial data
Unrealized appreciation/depreciation of real estate assets	2013-12-31	$0
Unrealized appreciation/depreciation of other (non real estate) assets	2013-12-31	$0
Total unrealized appreciation/depreciation of assets	2013-12-31	$0
Total transfer of assets to this plan	2013-12-31	$0
Total transfer of assets from this plan	2013-12-31	$3,156,914
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2013-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2013-12-31	$0
Expenses. Interest paid	2013-12-31	$0
Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102	2013-12-31	$0
Total income from all sources (including contributions)	2013-12-31	$28,627,769
Total loss/gain on sale of assets	2013-12-31	$0
Total of all expenses incurred	2013-12-31	$8,959,843
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2013-12-31	$8,895,884
Expenses. Certain deemed distributions of participant loans	2013-12-31	$55,866
Value of total corrective distributions	2013-12-31	$0
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2013-12-31	$8,224,542
Value of total assets at end of year	2013-12-31	$102,935,046
Value of total assets at beginning of year	2013-12-31	$86,424,034
Total of administrative expenses incurred including professional, contract, advisory and management fees	2013-12-31	$8,093
Total income from rents	2013-12-31	$0
Total interest from all sources	2013-12-31	$61,269
Total dividends received (eg from common stock, registered investment company shares)	2013-12-31	$0
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2013-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2013-12-31	$0
Assets. Real estate other than employer real property at end of year	2013-12-31	$0
Assets. Real estate other than employer real property at beginning of year	2013-12-31	$0
Administrative expenses professional fees incurred	2013-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at end of year	2013-12-31	$0
Assets. Corporate prefeered stocks other than exployer securities at beginning of year	2013-12-31	$0
Was this plan covered by a fidelity bond	2013-12-31	Yes
Value of fidelity bond cover	2013-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2013-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2013-12-31	No
Contributions received from participants	2013-12-31	$3,376,169
Participant contributions at end of year	2013-12-31	$1,558,721
Participant contributions at beginning of year	2013-12-31	$1,468,343
Participant contributions at end of year	2013-12-31	$0
Participant contributions at beginning of year	2013-12-31	$0
Assets. Other investments not covered elsewhere at end of year	2013-12-31	$0
Assets. Other investments not covered elsewhere at beginning of year	2013-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2013-12-31	$586,197
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2013-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at end of year	2013-12-31	$0
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2013-12-31	$0
Assets. Loans (other than to participants) at end of year	2013-12-31	$0
Assets. Loans (other than to participants) at beginning of year	2013-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year	2013-12-31	$0
Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year	2013-12-31	$0
Other income not declared elsewhere	2013-12-31	$0
Administrative expenses (other) incurred	2013-12-31	$8,093
Liabilities. Value of operating payables at end of year	2013-12-31	$0
Liabilities. Value of operating payables at beginning of year	2013-12-31	$0
Total non interest bearing cash at end of year	2013-12-31	$0
Total non interest bearing cash at beginning of year	2013-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2013-12-31	No
Income. Non cash contributions	2013-12-31	$0
Value of net income/loss	2013-12-31	$19,667,926
Value of net assets at end of year (total assets less liabilities)	2013-12-31	$102,935,046
Value of net assets at beginning of year (total assets less liabilities)	2013-12-31	$86,424,034
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2013-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2013-12-31	No
Were any leases to which the plan was party in default or uncollectible	2013-12-31	No
Assets. partnership/joint venture interests at end of year	2013-12-31	$0
Assets. partnership/joint venture interests at beginning of year	2013-12-31	$0
Investment advisory and management fees	2013-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2013-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2013-12-31	$0
Value of interest in pooled separate accounts at end of year	2013-12-31	$0
Value of interest in pooled separate accounts at beginning of year	2013-12-31	$0
Interest on participant loans	2013-12-31	$61,269
Income. Interest from loans (other than to participants)	2013-12-31	$0
Interest earned on other investments	2013-12-31	$0
Income. Interest from US Government securities	2013-12-31	$0
Income. Interest from corporate debt instruments	2013-12-31	$0
Value of interest in master investment trust accounts at end of year	2013-12-31	$101,261,299
Value of interest in master investment trust accounts at beginning of year	2013-12-31	$84,862,833
Value of interest in common/collective trusts at end of year	2013-12-31	$0
Value of interest in common/collective trusts at beginning of year	2013-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2013-12-31	$0
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2013-12-31	$0
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2013-12-31	$0
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2013-12-31	$0
Assets. Value of investments in 103.12 investment entities at end of year	2013-12-31	$0
Assets. Value of investments in 103.12 investment entities at beginning of year	2013-12-31	$0
Expenses. Payments to insurance carriers foe the provision of benefits	2013-12-31	$0
Asset value of US Government securities at end of year	2013-12-31	$0
Asset value of US Government securities at beginning of year	2013-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2013-12-31	$0
Net investment gain/loss from pooled separate accounts	2013-12-31	$0
Net investment gain or loss from common/collective trusts	2013-12-31	$0
Net gain/loss from 103.12 investment entities	2013-12-31	$0
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2013-12-31	No
Was there a failure to transmit to the plan any participant contributions	2013-12-31	No
Has the plan failed to provide any benefit when due under the plan	2013-12-31	No
Assets. Invements in employer securities at end of year	2013-12-31	$0
Assets. Invements in employer securities at beginning of year	2013-12-31	$0
Assets. Value of employer real property at end of year	2013-12-31	$0
Assets. Value of employer real property at beginning of year	2013-12-31	$0
Contributions received in cash from employer	2013-12-31	$4,262,176
Employer contributions (assets) at end of year	2013-12-31	$115,026
Employer contributions (assets) at beginning of year	2013-12-31	$92,858
Income. Dividends from preferred stock	2013-12-31	$0
Income. Dividends from common stock	2013-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2013-12-31	$8,895,884
Asset. Corporate debt instrument preferred debt at end of year	2013-12-31	$0
Asset. Corporate debt instrument preferred debt at beginning of year	2013-12-31	$0
Asset. Corporate debt instrument debt (other) at end of year	2013-12-31	$0
Asset. Corporate debt instrument debt (other) at beginning of year	2013-12-31	$0
Contract administrator fees	2013-12-31	$0
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2013-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2013-12-31	$0
Assets. Corporate common stocks other than exployer securities at beginning of year	2013-12-31	$0
Liabilities. Value of benefit claims payable at end of year	2013-12-31	$0
Liabilities. Value of benefit claims payable at beginning of year	2013-12-31	$0
Assets. Value of buildings and other operty used in plan operation at end of year	2013-12-31	$0
Assets. Value of buildings and other operty used in plan operation at beginning of year	2013-12-31	$0
Did the plan have assets held for investment	2013-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2013-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2013-12-31	No
Aggregate proceeds on sale of assets	2013-12-31	$0
Aggregate carrying amount (costs) on sale of assets	2013-12-31	$0
Liabilities. Value of acquisition indebtedness at end of year	2013-12-31	$0
Liabilities. Value of acquisition indebtedness at beginning of year	2013-12-31	$0
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2013-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2013-12-31	Disclaimer
Accountancy firm name	2013-12-31	CROWE HOWATH, LLP
Accountancy firm EIN	2013-12-31	350921680
2012 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2012 401k financial data
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2012-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2012-12-31	$0
Total income from all sources (including contributions)	2012-12-31	$16,877,834
Total of all expenses incurred	2012-12-31	$5,812,814
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2012-12-31	$5,806,764
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2012-12-31	$7,553,276
Value of total assets at end of year	2012-12-31	$86,424,034
Value of total assets at beginning of year	2012-12-31	$75,359,014
Total of administrative expenses incurred including professional, contract, advisory and management fees	2012-12-31	$6,050
Total interest from all sources	2012-12-31	$87,400
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2012-12-31	No
Was this plan covered by a fidelity bond	2012-12-31	Yes
Value of fidelity bond cover	2012-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2012-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2012-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2012-12-31	No
Contributions received from participants	2012-12-31	$3,113,716
Participant contributions at end of year	2012-12-31	$1,468,343
Participant contributions at beginning of year	2012-12-31	$1,601,151
Income. Received or receivable in cash from other sources (including rollovers)	2012-12-31	$186,740
Administrative expenses (other) incurred	2012-12-31	$6,050
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2012-12-31	No
Value of net income/loss	2012-12-31	$11,065,020
Value of net assets at end of year (total assets less liabilities)	2012-12-31	$86,424,034
Value of net assets at beginning of year (total assets less liabilities)	2012-12-31	$75,359,014
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2012-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2012-12-31	No
Were any leases to which the plan was party in default or uncollectible	2012-12-31	No
Interest on participant loans	2012-12-31	$87,400
Value of interest in master investment trust accounts at end of year	2012-12-31	$84,862,833
Value of interest in master investment trust accounts at beginning of year	2012-12-31	$73,757,863
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2012-12-31	No
Was there a failure to transmit to the plan any participant contributions	2012-12-31	No
Has the plan failed to provide any benefit when due under the plan	2012-12-31	No
Contributions received in cash from employer	2012-12-31	$4,252,820
Employer contributions (assets) at end of year	2012-12-31	$92,858
Employer contributions (assets) at beginning of year	2012-12-31	$0
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2012-12-31	$5,806,764
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2012-12-31	No
Did the plan have assets held for investment	2012-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2012-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2012-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2012-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2012-12-31	Disclaimer
Accountancy firm name	2012-12-31	CROWE HOWATH, LLP
Accountancy firm EIN	2012-12-31	350921680
2011 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2011 401k financial data
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2011-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2011-12-31	$0
Total income from all sources (including contributions)	2011-12-31	$6,025,571
Total of all expenses incurred	2011-12-31	$6,116,575
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2011-12-31	$6,111,494
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2011-12-31	$7,482,408
Value of total assets at end of year	2011-12-31	$75,359,014
Value of total assets at beginning of year	2011-12-31	$75,450,018
Total of administrative expenses incurred including professional, contract, advisory and management fees	2011-12-31	$5,081
Total interest from all sources	2011-12-31	$74,014
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2011-12-31	No
Was this plan covered by a fidelity bond	2011-12-31	Yes
Value of fidelity bond cover	2011-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2011-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2011-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2011-12-31	No
Contributions received from participants	2011-12-31	$2,844,670
Participant contributions at end of year	2011-12-31	$1,601,151
Participant contributions at beginning of year	2011-12-31	$1,497,953
Income. Received or receivable in cash from other sources (including rollovers)	2011-12-31	$37,548
Administrative expenses (other) incurred	2011-12-31	$5,081
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2011-12-31	No
Value of net income/loss	2011-12-31	$-91,004
Value of net assets at end of year (total assets less liabilities)	2011-12-31	$75,359,014
Value of net assets at beginning of year (total assets less liabilities)	2011-12-31	$75,450,018
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2011-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2011-12-31	No
Were any leases to which the plan was party in default or uncollectible	2011-12-31	No
Interest on participant loans	2011-12-31	$74,014
Value of interest in master investment trust accounts at end of year	2011-12-31	$73,757,863
Value of interest in master investment trust accounts at beginning of year	2011-12-31	$73,952,065
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2011-12-31	No
Was there a failure to transmit to the plan any participant contributions	2011-12-31	No
Has the plan failed to provide any benefit when due under the plan	2011-12-31	No
Contributions received in cash from employer	2011-12-31	$4,600,190
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2011-12-31	$6,111,494
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2011-12-31	No
Did the plan have assets held for investment	2011-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2011-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2011-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2011-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2011-12-31	Disclaimer
Accountancy firm name	2011-12-31	CROWE HORWATH, LLP
Accountancy firm EIN	2011-12-31	350921680
2010 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2010 401k financial data
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2010-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2010-12-31	$0
Total income from all sources (including contributions)	2010-12-31	$13,257,826
Total of all expenses incurred	2010-12-31	$5,138,645
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2010-12-31	$5,133,214
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2010-12-31	$4,610,644
Value of total assets at end of year	2010-12-31	$75,450,018
Value of total assets at beginning of year	2010-12-31	$67,330,837
Total of administrative expenses incurred including professional, contract, advisory and management fees	2010-12-31	$5,431
Total interest from all sources	2010-12-31	$80,527
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2010-12-31	No
Was this plan covered by a fidelity bond	2010-12-31	Yes
Value of fidelity bond cover	2010-12-31	$5,000,000
If this is an individual account plan, was there a blackout period	2010-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2010-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2010-12-31	No
Contributions received from participants	2010-12-31	$2,703,121
Participant contributions at end of year	2010-12-31	$1,497,953
Participant contributions at beginning of year	2010-12-31	$1,345,186
Income. Received or receivable in cash from other sources (including rollovers)	2010-12-31	$122,650
Administrative expenses (other) incurred	2010-12-31	$5,431
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2010-12-31	No
Value of net income/loss	2010-12-31	$8,119,181
Value of net assets at end of year (total assets less liabilities)	2010-12-31	$75,450,018
Value of net assets at beginning of year (total assets less liabilities)	2010-12-31	$67,330,837
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2010-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2010-12-31	No
Were any leases to which the plan was party in default or uncollectible	2010-12-31	No
Interest on participant loans	2010-12-31	$80,527
Value of interest in master investment trust accounts at end of year	2010-12-31	$73,952,065
Value of interest in master investment trust accounts at beginning of year	2010-12-31	$63,526,069
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2010-12-31	No
Was there a failure to transmit to the plan any participant contributions	2010-12-31	No
Has the plan failed to provide any benefit when due under the plan	2010-12-31	No
Contributions received in cash from employer	2010-12-31	$1,784,873
Employer contributions (assets) at end of year	2010-12-31	$0
Employer contributions (assets) at beginning of year	2010-12-31	$2,459,582
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2010-12-31	$5,133,214
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2010-12-31	No
Did the plan have assets held for investment	2010-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2010-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2010-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2010-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2010-12-31	Disclaimer
Accountancy firm name	2010-12-31	CROWE HOWATH, LLP
Accountancy firm EIN	2010-12-31	350921680
2009 : GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2009 401k financial data
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2009-12-31	$0

Form 5500 Responses for GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN

2022: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2022 form 5500 responses
2022-01-01	Type of plan entity	Single employer plan
2022-01-01	Submission has been amended	No
2022-01-01	This submission is the final filing	No
2022-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2022-01-01	Plan is a collectively bargained plan	No
2022-01-01	Plan funding arrangement – Trust	Yes
2022-01-01	Plan benefit arrangement - Trust	Yes
2021: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2021 form 5500 responses
2021-01-01	Type of plan entity	Single employer plan
2021-01-01	Submission has been amended	Yes
2021-01-01	This submission is the final filing	No
2021-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2021-01-01	Plan is a collectively bargained plan	No
2021-01-01	Plan funding arrangement – Trust	Yes
2021-01-01	Plan benefit arrangement - Trust	Yes
2020: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2020 form 5500 responses
2020-01-01	Type of plan entity	Single employer plan
2020-01-01	Submission has been amended	No
2020-01-01	This submission is the final filing	No
2020-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2020-01-01	Plan is a collectively bargained plan	No
2020-01-01	Plan funding arrangement – Trust	Yes
2020-01-01	Plan benefit arrangement - Trust	Yes
2019: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2019 form 5500 responses
2019-01-01	Type of plan entity	Single employer plan
2019-01-01	Submission has been amended	No
2019-01-01	This submission is the final filing	No
2019-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2019-01-01	Plan is a collectively bargained plan	No
2019-01-01	Plan funding arrangement – Trust	Yes
2019-01-01	Plan benefit arrangement - Trust	Yes
2018: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2018 form 5500 responses
2018-01-01	Type of plan entity	Single employer plan
2018-01-01	Submission has been amended	No
2018-01-01	This submission is the final filing	No
2018-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2018-01-01	Plan is a collectively bargained plan	No
2018-01-01	Plan funding arrangement – Trust	Yes
2018-01-01	Plan benefit arrangement - Trust	Yes
2017: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2017 form 5500 responses
2017-01-01	Type of plan entity	Single employer plan
2017-01-01	Submission has been amended	No
2017-01-01	This submission is the final filing	No
2017-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2017-01-01	Plan is a collectively bargained plan	No
2017-01-01	Plan funding arrangement – Trust	Yes
2017-01-01	Plan benefit arrangement - Trust	Yes
2016: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2016 form 5500 responses
2016-01-01	Type of plan entity	Single employer plan
2016-01-01	Submission has been amended	No
2016-01-01	This submission is the final filing	No
2016-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2016-01-01	Plan is a collectively bargained plan	No
2016-01-01	Plan funding arrangement – Trust	Yes
2016-01-01	Plan benefit arrangement - Trust	Yes
2015: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2015 form 5500 responses
2015-01-01	Type of plan entity	Single employer plan
2015-01-01	Submission has been amended	No
2015-01-01	This submission is the final filing	No
2015-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2015-01-01	Plan is a collectively bargained plan	No
2015-01-01	Plan funding arrangement – Trust	Yes
2015-01-01	Plan benefit arrangement - Trust	Yes
2014: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2014 form 5500 responses
2014-01-01	Type of plan entity	Single employer plan
2014-01-01	Submission has been amended	No
2014-01-01	This submission is the final filing	No
2014-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2014-01-01	Plan is a collectively bargained plan	No
2014-01-01	Plan funding arrangement – Trust	Yes
2014-01-01	Plan benefit arrangement - Trust	Yes
2013: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2013 form 5500 responses
2013-01-01	Type of plan entity	Single employer plan
2013-01-01	Submission has been amended	No
2013-01-01	This submission is the final filing	No
2013-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2013-01-01	Plan is a collectively bargained plan	No
2013-01-01	Plan funding arrangement – Trust	Yes
2013-01-01	Plan benefit arrangement - Trust	Yes
2012: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2012 form 5500 responses
2012-01-01	Type of plan entity	Single employer plan
2012-01-01	Submission has been amended	No
2012-01-01	This submission is the final filing	No
2012-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2012-01-01	Plan funding arrangement – Trust	Yes
2012-01-01	Plan benefit arrangement - Trust	Yes
2011: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2011 form 5500 responses
2011-01-01	Type of plan entity	Single employer plan
2011-01-01	Submission has been amended	No
2011-01-01	This submission is the final filing	No
2011-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2011-01-01	Plan funding arrangement – Trust	Yes
2011-01-01	Plan benefit arrangement - Trust	Yes
2009: GREAT LAKES DREDGE & DOCK COMPANY, LLC 401(K) SAVINGS PLAN 2009 form 5500 responses
2009-01-01	Type of plan entity	Single employer plan
2009-01-01	Submission has been amended	Yes
2009-01-01	This submission is the final filing	No
2009-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2009-01-01	Plan funding arrangement – Trust	Yes
2009-01-01	Plan benefit arrangement - Trust	Yes

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Company Name:	GREAT LAKES DREDGE & DOCK COMPANY, LLC
Employer identification number (EIN):	201354414
NAIC Classification:	237990
NAIC Description:	Other Heavy and Civil Engineering Construction

Jurisdiction of Incorporation:	Vermont Secretary of State Corporations Division
Incorporation Date:	1992-09-25
Company Identification Number:	63453
Legal Registered Office Address:	400 CORNERSTONE DR #240 WILLISTON United States of America (USA) 05495