401k Plan data: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN plan

UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 401k Plan overview

Plan Name	UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN
Plan identification number	002

UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT 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.
Plan provides for automatic enrollment in plan that has employee contributions deducted from payroll.
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

UNITIL CORPORATION has sponsored the creation of one or more 401k plans.

Company Name: UNITIL CORPORATION

Employer identification number (EIN): 020381573

NAIC Classification: 221500

Form 5500 Filing Information

Submission information for form 5500 for 401k plan UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN

Plan id# Filing Submission Date Name of Administrator Date Administrator Signed Name of Company Sponsor Date Sponsor Signed
002 2022-01-01
002 2021-01-01
002 2020-01-01
002 2019-01-01
002 2018-01-01 CHRISTINE VAUGHAN
002 2017-01-01
002 2016-01-01
002 2015-01-01
002 2014-01-01
002 2013-01-01
002 2012-01-01 GEORGE E. LONG, JR.
002 2011-01-01 GEORGE E. LONG, JR.
002 2009-01-01 GEORGE LONG

Plan Statistics for UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN

401k plan membership statisitcs for UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN

Measure Date Value
2022: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2022 401k membership
Total participants, beginning-of-year 2022-01-01 672
Total number of active participants reported on line 7a of the Form 5500 2022-01-01 491
Number of retired or separated participants receiving benefits 2022-01-01 0
Number of other retired or separated participants entitled to future benefits 2022-01-01 173
Total of all active and inactive participants 2022-01-01 664
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2022-01-01 12
Total participants 2022-01-01 676
Number of participants with account balances 2022-01-01 676
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2022-01-01 13
2021: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2021 401k membership
Total participants, beginning-of-year 2021-01-01 688
Total number of active participants reported on line 7a of the Form 5500 2021-01-01 495
Number of retired or separated participants receiving benefits 2021-01-01 0
Number of other retired or separated participants entitled to future benefits 2021-01-01 168
Total of all active and inactive participants 2021-01-01 663
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2021-01-01 9
Total participants 2021-01-01 672
Number of participants with account balances 2021-01-01 672
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2021-01-01 8
2020: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2020 401k membership
Total participants, beginning-of-year 2020-01-01 650
Total number of active participants reported on line 7a of the Form 5500 2020-01-01 497
Number of retired or separated participants receiving benefits 2020-01-01 0
Number of other retired or separated participants entitled to future benefits 2020-01-01 155
Total of all active and inactive participants 2020-01-01 652
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2020-01-01 7
Total participants 2020-01-01 659
Number of participants with account balances 2020-01-01 658
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2020-01-01 6
2019: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2019 401k membership
Total participants, beginning-of-year 2019-01-01 653
Total number of active participants reported on line 7a of the Form 5500 2019-01-01 486
Number of retired or separated participants receiving benefits 2019-01-01 0
Number of other retired or separated participants entitled to future benefits 2019-01-01 157
Total of all active and inactive participants 2019-01-01 643
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2019-01-01 7
Total participants 2019-01-01 650
Number of participants with account balances 2019-01-01 650
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2019-01-01 10
2018: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2018 401k membership
Total participants, beginning-of-year 2018-01-01 629
Total number of active participants reported on line 7a of the Form 5500 2018-01-01 497
Number of retired or separated participants receiving benefits 2018-01-01 0
Number of other retired or separated participants entitled to future benefits 2018-01-01 152
Total of all active and inactive participants 2018-01-01 649
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2018-01-01 8
Total participants 2018-01-01 657
Number of participants with account balances 2018-01-01 656
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2018-01-01 0
2017: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2017 401k membership
Total participants, beginning-of-year 2017-01-01 635
Total number of active participants reported on line 7a of the Form 5500 2017-01-01 467
Number of retired or separated participants receiving benefits 2017-01-01 0
Number of other retired or separated participants entitled to future benefits 2017-01-01 154
Total of all active and inactive participants 2017-01-01 621
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2017-01-01 8
Total participants 2017-01-01 629
Number of participants with account balances 2017-01-01 628
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2017-01-01 0
2016: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2016 401k membership
Total participants, beginning-of-year 2016-01-01 615
Total number of active participants reported on line 7a of the Form 5500 2016-01-01 482
Number of retired or separated participants receiving benefits 2016-01-01 0
Number of other retired or separated participants entitled to future benefits 2016-01-01 144
Total of all active and inactive participants 2016-01-01 626
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2016-01-01 9
Total participants 2016-01-01 635
Number of participants with account balances 2016-01-01 630
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2016-01-01 0
2015: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2015 401k membership
Total participants, beginning-of-year 2015-01-01 623
Total number of active participants reported on line 7a of the Form 5500 2015-01-01 477
Number of retired or separated participants receiving benefits 2015-01-01 0
Number of other retired or separated participants entitled to future benefits 2015-01-01 137
Total of all active and inactive participants 2015-01-01 614
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2015-01-01 10
Total participants 2015-01-01 624
Number of participants with account balances 2015-01-01 615
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2015-01-01 0
2014: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2014 401k membership
Total participants, beginning-of-year 2014-01-01 590
Total number of active participants reported on line 7a of the Form 5500 2014-01-01 466
Number of retired or separated participants receiving benefits 2014-01-01 0
Number of other retired or separated participants entitled to future benefits 2014-01-01 130
Total of all active and inactive participants 2014-01-01 596
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2014-01-01 8
Total participants 2014-01-01 604
Number of participants with account balances 2014-01-01 593
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2014-01-01 5
2013: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2013 401k membership
Total participants, beginning-of-year 2013-01-01 576
Total number of active participants reported on line 7a of the Form 5500 2013-01-01 460
Number of retired or separated participants receiving benefits 2013-01-01 0
Number of other retired or separated participants entitled to future benefits 2013-01-01 122
Total of all active and inactive participants 2013-01-01 582
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2013-01-01 8
Total participants 2013-01-01 590
Number of participants with account balances 2013-01-01 572
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2013-01-01 7
2012: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2012 401k membership
Total participants, beginning-of-year 2012-01-01 575
Total number of active participants reported on line 7a of the Form 5500 2012-01-01 438
Number of retired or separated participants receiving benefits 2012-01-01 0
Number of other retired or separated participants entitled to future benefits 2012-01-01 120
Total of all active and inactive participants 2012-01-01 558
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2012-01-01 6
Total participants 2012-01-01 564
Number of participants with account balances 2012-01-01 537
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2012-01-01 13
2011: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2011 401k membership
Total participants, beginning-of-year 2011-01-01 551
Total number of active participants reported on line 7a of the Form 5500 2011-01-01 437
Number of retired or separated participants receiving benefits 2011-01-01 0
Number of other retired or separated participants entitled to future benefits 2011-01-01 120
Total of all active and inactive participants 2011-01-01 557
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2011-01-01 4
Total participants 2011-01-01 561
Number of participants with account balances 2011-01-01 533
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2011-01-01 0
2009: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2009 401k membership
Total participants, beginning-of-year 2009-01-01 458
Total number of active participants reported on line 7a of the Form 5500 2009-01-01 408
Number of retired or separated participants receiving benefits 2009-01-01 0
Number of other retired or separated participants entitled to future benefits 2009-01-01 109
Total of all active and inactive participants 2009-01-01 517
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2009-01-01 5
Total participants 2009-01-01 522
Number of participants with account balances 2009-01-01 467
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2009-01-01 6

Measure	Date	Value
2022: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2022 401k membership
Total participants, beginning-of-year	2022-01-01	672
Total number of active participants reported on line 7a of the Form 5500	2022-01-01	491
Number of retired or separated participants receiving benefits	2022-01-01	0
Number of other retired or separated participants entitled to future benefits	2022-01-01	173
Total of all active and inactive participants	2022-01-01	664
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2022-01-01	12
Total participants	2022-01-01	676
Number of participants with account balances	2022-01-01	676
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2022-01-01	13
2021: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2021 401k membership
Total participants, beginning-of-year	2021-01-01	688
Total number of active participants reported on line 7a of the Form 5500	2021-01-01	495
Number of retired or separated participants receiving benefits	2021-01-01	0
Number of other retired or separated participants entitled to future benefits	2021-01-01	168
Total of all active and inactive participants	2021-01-01	663
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2021-01-01	9
Total participants	2021-01-01	672
Number of participants with account balances	2021-01-01	672
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2021-01-01	8
2020: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2020 401k membership
Total participants, beginning-of-year	2020-01-01	650
Total number of active participants reported on line 7a of the Form 5500	2020-01-01	497
Number of retired or separated participants receiving benefits	2020-01-01	0
Number of other retired or separated participants entitled to future benefits	2020-01-01	155
Total of all active and inactive participants	2020-01-01	652
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2020-01-01	7
Total participants	2020-01-01	659
Number of participants with account balances	2020-01-01	658
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2020-01-01	6
2019: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2019 401k membership
Total participants, beginning-of-year	2019-01-01	653
Total number of active participants reported on line 7a of the Form 5500	2019-01-01	486
Number of retired or separated participants receiving benefits	2019-01-01	0
Number of other retired or separated participants entitled to future benefits	2019-01-01	157
Total of all active and inactive participants	2019-01-01	643
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2019-01-01	7
Total participants	2019-01-01	650
Number of participants with account balances	2019-01-01	650
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2019-01-01	10
2018: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2018 401k membership
Total participants, beginning-of-year	2018-01-01	629
Total number of active participants reported on line 7a of the Form 5500	2018-01-01	497
Number of retired or separated participants receiving benefits	2018-01-01	0
Number of other retired or separated participants entitled to future benefits	2018-01-01	152
Total of all active and inactive participants	2018-01-01	649
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2018-01-01	8
Total participants	2018-01-01	657
Number of participants with account balances	2018-01-01	656
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2018-01-01	0
2017: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2017 401k membership
Total participants, beginning-of-year	2017-01-01	635
Total number of active participants reported on line 7a of the Form 5500	2017-01-01	467
Number of retired or separated participants receiving benefits	2017-01-01	0
Number of other retired or separated participants entitled to future benefits	2017-01-01	154
Total of all active and inactive participants	2017-01-01	621
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2017-01-01	8
Total participants	2017-01-01	629
Number of participants with account balances	2017-01-01	628
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2017-01-01	0
2016: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2016 401k membership
Total participants, beginning-of-year	2016-01-01	615
Total number of active participants reported on line 7a of the Form 5500	2016-01-01	482
Number of retired or separated participants receiving benefits	2016-01-01	0
Number of other retired or separated participants entitled to future benefits	2016-01-01	144
Total of all active and inactive participants	2016-01-01	626
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2016-01-01	9
Total participants	2016-01-01	635
Number of participants with account balances	2016-01-01	630
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2016-01-01	0
2015: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2015 401k membership
Total participants, beginning-of-year	2015-01-01	623
Total number of active participants reported on line 7a of the Form 5500	2015-01-01	477
Number of retired or separated participants receiving benefits	2015-01-01	0
Number of other retired or separated participants entitled to future benefits	2015-01-01	137
Total of all active and inactive participants	2015-01-01	614
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2015-01-01	10
Total participants	2015-01-01	624
Number of participants with account balances	2015-01-01	615
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2015-01-01	0
2014: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2014 401k membership
Total participants, beginning-of-year	2014-01-01	590
Total number of active participants reported on line 7a of the Form 5500	2014-01-01	466
Number of retired or separated participants receiving benefits	2014-01-01	0
Number of other retired or separated participants entitled to future benefits	2014-01-01	130
Total of all active and inactive participants	2014-01-01	596
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2014-01-01	8
Total participants	2014-01-01	604
Number of participants with account balances	2014-01-01	593
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2014-01-01	5
2013: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2013 401k membership
Total participants, beginning-of-year	2013-01-01	576
Total number of active participants reported on line 7a of the Form 5500	2013-01-01	460
Number of retired or separated participants receiving benefits	2013-01-01	0
Number of other retired or separated participants entitled to future benefits	2013-01-01	122
Total of all active and inactive participants	2013-01-01	582
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2013-01-01	8
Total participants	2013-01-01	590
Number of participants with account balances	2013-01-01	572
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2013-01-01	7
2012: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2012 401k membership
Total participants, beginning-of-year	2012-01-01	575
Total number of active participants reported on line 7a of the Form 5500	2012-01-01	438
Number of retired or separated participants receiving benefits	2012-01-01	0
Number of other retired or separated participants entitled to future benefits	2012-01-01	120
Total of all active and inactive participants	2012-01-01	558
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2012-01-01	6
Total participants	2012-01-01	564
Number of participants with account balances	2012-01-01	537
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2012-01-01	13
2011: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2011 401k membership
Total participants, beginning-of-year	2011-01-01	551
Total number of active participants reported on line 7a of the Form 5500	2011-01-01	437
Number of retired or separated participants receiving benefits	2011-01-01	0
Number of other retired or separated participants entitled to future benefits	2011-01-01	120
Total of all active and inactive participants	2011-01-01	557
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2011-01-01	4
Total participants	2011-01-01	561
Number of participants with account balances	2011-01-01	533
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2011-01-01	0
2009: UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2009 401k membership
Total participants, beginning-of-year	2009-01-01	458
Total number of active participants reported on line 7a of the Form 5500	2009-01-01	408
Number of retired or separated participants receiving benefits	2009-01-01	0
Number of other retired or separated participants entitled to future benefits	2009-01-01	109
Total of all active and inactive participants	2009-01-01	517
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2009-01-01	5
Total participants	2009-01-01	522
Number of participants with account balances	2009-01-01	467
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2009-01-01	6

Financial Data on UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN

Measure	Date	Value
2022 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2022 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2022-12-31	$1,118,396
Total unrealized appreciation/depreciation of assets	2022-12-31	$1,118,396
Total income from all sources (including contributions)	2022-12-31	$-7,639,887
Total loss/gain on sale of assets	2022-12-31	$331,707
Total of all expenses incurred	2022-12-31	$14,976,722
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2022-12-31	$14,889,267
Value of total corrective distributions	2022-12-31	$1,639
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2022-12-31	$9,823,356
Value of total assets at end of year	2022-12-31	$120,025,765
Value of total assets at beginning of year	2022-12-31	$142,642,374
Total of administrative expenses incurred including professional, contract, advisory and management fees	2022-12-31	$85,816
Total interest from all sources	2022-12-31	$105,057
Total dividends received (eg from common stock, registered investment company shares)	2022-12-31	$1,861,122
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	$1,475,954
Was this plan covered by a fidelity bond	2022-12-31	Yes
Value of fidelity bond cover	2022-12-31	$1,000,000
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	$5,106,636
Participant contributions at end of year	2022-12-31	$2,241,720
Participant contributions at beginning of year	2022-12-31	$2,235,673
Income. Received or receivable in cash from other sources (including rollovers)	2022-12-31	$1,236,706
Other income not declared elsewhere	2022-12-31	$124,526
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
Value of net income/loss	2022-12-31	$-22,616,609
Value of net assets at end of year (total assets less liabilities)	2022-12-31	$120,025,765
Value of net assets at beginning of year (total assets less liabilities)	2022-12-31	$142,642,374
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
Investment advisory and management fees	2022-12-31	$60,000
Value of interest in registered invesment companies (eg mutual funds) at end of year	2022-12-31	$93,212,584
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2022-12-31	$114,920,222
Value of interest in pooled separate accounts at end of year	2022-12-31	$12,245,604
Value of interest in pooled separate accounts at beginning of year	2022-12-31	$13,127,204
Interest on participant loans	2022-12-31	$98,849
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2022-12-31	$439,099
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2022-12-31	$306,216
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2022-12-31	$306,216
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2022-12-31	$6,208
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2022-12-31	$-21,279,609
Net investment gain/loss from pooled separate accounts	2022-12-31	$275,558
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	$11,886,758
Assets. Invements in employer securities at beginning of year	2022-12-31	$12,053,059
Contributions received in cash from employer	2022-12-31	$3,480,014
Income. Dividends from common stock	2022-12-31	$385,168
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2022-12-31	$14,889,267
Contract administrator fees	2022-12-31	$25,816
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	$2,726,198
Aggregate carrying amount (costs) on sale of assets	2022-12-31	$2,394,491
Opinion of an independent qualified public accountant for this plan	2022-12-31	Unqualified
Accountancy firm name	2022-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2022-12-31	043499945
2021 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2021 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2021-12-31	$419,776
Total unrealized appreciation/depreciation of assets	2021-12-31	$419,776
Total income from all sources (including contributions)	2021-12-31	$27,204,251
Total loss/gain on sale of assets	2021-12-31	$195,046
Total of all expenses incurred	2021-12-31	$9,487,213
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2021-12-31	$9,410,308
Value of total corrective distributions	2021-12-31	$5,426
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2021-12-31	$8,843,090
Value of total assets at end of year	2021-12-31	$142,642,374
Value of total assets at beginning of year	2021-12-31	$124,925,336
Total of administrative expenses incurred including professional, contract, advisory and management fees	2021-12-31	$71,479
Total interest from all sources	2021-12-31	$105,742
Total dividends received (eg from common stock, registered investment company shares)	2021-12-31	$1,641,134
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	$1,253,436
Administrative expenses professional fees incurred	2021-12-31	$500
Was this plan covered by a fidelity bond	2021-12-31	Yes
Value of fidelity bond cover	2021-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2021-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2021-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2021-12-31	No
Contributions received from participants	2021-12-31	$4,942,827
Participant contributions at end of year	2021-12-31	$2,235,673
Participant contributions at beginning of year	2021-12-31	$2,121,882
Income. Received or receivable in cash from other sources (including rollovers)	2021-12-31	$560,418
Other income not declared elsewhere	2021-12-31	$149,442
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
Value of net income/loss	2021-12-31	$17,717,038
Value of net assets at end of year (total assets less liabilities)	2021-12-31	$142,642,374
Value of net assets at beginning of year (total assets less liabilities)	2021-12-31	$124,925,336
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
Investment advisory and management fees	2021-12-31	$60,000
Value of interest in registered invesment companies (eg mutual funds) at end of year	2021-12-31	$114,920,222
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2021-12-31	$97,355,422
Value of interest in pooled separate accounts at end of year	2021-12-31	$13,127,204
Value of interest in pooled separate accounts at beginning of year	2021-12-31	$13,422,569
Income. Interest from loans (other than to participants)	2021-12-31	$105,718
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2021-12-31	$306,216
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2021-12-31	$462,980
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2021-12-31	$462,980
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2021-12-31	$24
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2021-12-31	$15,626,791
Net investment gain/loss from pooled separate accounts	2021-12-31	$223,230
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	$12,053,059
Assets. Invements in employer securities at beginning of year	2021-12-31	$11,562,483
Contributions received in cash from employer	2021-12-31	$3,339,845
Income. Dividends from common stock	2021-12-31	$387,698
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2021-12-31	$9,410,308
Contract administrator fees	2021-12-31	$10,979
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
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	$1,336,507
Aggregate carrying amount (costs) on sale of assets	2021-12-31	$1,141,461
Opinion of an independent qualified public accountant for this plan	2021-12-31	Unqualified
Accountancy firm name	2021-12-31	CARON & BLETZER PLLC
Accountancy firm EIN	2021-12-31	034999945
2020 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2020 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2020-12-31	$-3,802,381
Total unrealized appreciation/depreciation of assets	2020-12-31	$-3,802,381
Total income from all sources (including contributions)	2020-12-31	$19,190,455
Total loss/gain on sale of assets	2020-12-31	$-137,497
Total of all expenses incurred	2020-12-31	$6,570,195
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2020-12-31	$6,468,854
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2020-12-31	$8,361,756
Value of total assets at end of year	2020-12-31	$124,925,336
Value of total assets at beginning of year	2020-12-31	$112,305,076
Total of administrative expenses incurred including professional, contract, advisory and management fees	2020-12-31	$101,341
Total interest from all sources	2020-12-31	$113,450
Total dividends received (eg from common stock, registered investment company shares)	2020-12-31	$1,570,413
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	$1,211,472
Administrative expenses professional fees incurred	2020-12-31	$16,520
Was this plan covered by a fidelity bond	2020-12-31	Yes
Value of fidelity bond cover	2020-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2020-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2020-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2020-12-31	No
Contributions received from participants	2020-12-31	$4,609,136
Participant contributions at end of year	2020-12-31	$2,121,882
Participant contributions at beginning of year	2020-12-31	$2,022,989
Income. Received or receivable in cash from other sources (including rollovers)	2020-12-31	$591,961
Other income not declared elsewhere	2020-12-31	$97,727
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
Value of net income/loss	2020-12-31	$12,620,260
Value of net assets at end of year (total assets less liabilities)	2020-12-31	$124,925,336
Value of net assets at beginning of year (total assets less liabilities)	2020-12-31	$112,305,076
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
Investment advisory and management fees	2020-12-31	$60,000
Value of interest in registered invesment companies (eg mutual funds) at end of year	2020-12-31	$97,355,422
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2020-12-31	$84,859,458
Value of interest in pooled separate accounts at end of year	2020-12-31	$13,422,569
Value of interest in pooled separate accounts at beginning of year	2020-12-31	$10,913,331
Interest on participant loans	2020-12-31	$111,958
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2020-12-31	$462,980
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2020-12-31	$463,361
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2020-12-31	$463,361
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2020-12-31	$1,492
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2020-12-31	$12,732,768
Net investment gain/loss from pooled separate accounts	2020-12-31	$254,219
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	$11,562,483
Assets. Invements in employer securities at beginning of year	2020-12-31	$14,045,937
Contributions received in cash from employer	2020-12-31	$3,160,659
Income. Dividends from common stock	2020-12-31	$358,941
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2020-12-31	$6,468,854
Contract administrator fees	2020-12-31	$24,821
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	$516,091
Aggregate carrying amount (costs) on sale of assets	2020-12-31	$653,588
Opinion of an independent qualified public accountant for this plan	2020-12-31	Unqualified
Accountancy firm name	2020-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2020-12-31	043499945
2019 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2019 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2019-12-31	$2,420,460
Total unrealized appreciation/depreciation of assets	2019-12-31	$2,420,460
Total income from all sources (including contributions)	2019-12-31	$26,223,567
Total loss/gain on sale of assets	2019-12-31	$297,455
Total of all expenses incurred	2019-12-31	$6,710,639
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2019-12-31	$6,646,595
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2019-12-31	$7,252,340
Value of total assets at end of year	2019-12-31	$112,305,076
Value of total assets at beginning of year	2019-12-31	$92,792,148
Total of administrative expenses incurred including professional, contract, advisory and management fees	2019-12-31	$64,044
Total interest from all sources	2019-12-31	$127,464
Total dividends received (eg from common stock, registered investment company shares)	2019-12-31	$1,682,344
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	$1,327,105
Was this plan covered by a fidelity bond	2019-12-31	Yes
Value of fidelity bond cover	2019-12-31	$3,000,000
If this is an individual account plan, was there a blackout period	2019-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2019-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2019-12-31	No
Contributions received from participants	2019-12-31	$4,202,894
Participant contributions at end of year	2019-12-31	$2,022,989
Participant contributions at beginning of year	2019-12-31	$2,176,346
Income. Received or receivable in cash from other sources (including rollovers)	2019-12-31	$206,539
Other income not declared elsewhere	2019-12-31	$67,481
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
Value of net income/loss	2019-12-31	$19,512,928
Value of net assets at end of year (total assets less liabilities)	2019-12-31	$112,305,076
Value of net assets at beginning of year (total assets less liabilities)	2019-12-31	$92,792,148
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
Investment advisory and management fees	2019-12-31	$60,000
Value of interest in registered invesment companies (eg mutual funds) at end of year	2019-12-31	$84,859,458
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2019-12-31	$67,045,020
Value of interest in pooled separate accounts at end of year	2019-12-31	$10,913,331
Value of interest in pooled separate accounts at beginning of year	2019-12-31	$10,263,824
Interest on participant loans	2019-12-31	$118,855
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2019-12-31	$463,361
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2019-12-31	$455,235
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2019-12-31	$455,235
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2019-12-31	$8,609
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2019-12-31	$14,138,286
Net investment gain/loss from pooled separate accounts	2019-12-31	$237,737
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	$14,045,937
Assets. Invements in employer securities at beginning of year	2019-12-31	$12,851,723
Contributions received in cash from employer	2019-12-31	$2,842,907
Income. Dividends from common stock	2019-12-31	$355,239
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2019-12-31	$6,646,595
Contract administrator fees	2019-12-31	$4,044
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	$2,543,642
Aggregate carrying amount (costs) on sale of assets	2019-12-31	$2,246,187
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2019-12-31	No
Opinion of an independent qualified public accountant for this plan	2019-12-31	Unqualified
Accountancy firm name	2019-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2019-12-31	043499945
2018 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2018 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2018-12-31	$1,229,554
Total unrealized appreciation/depreciation of assets	2018-12-31	$1,229,554
Total income from all sources (including contributions)	2018-12-31	$5,127,514
Total loss/gain on sale of assets	2018-12-31	$147,723
Total of all expenses incurred	2018-12-31	$7,384,604
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2018-12-31	$7,288,731
Expenses. Certain deemed distributions of participant loans	2018-12-31	$10,381
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2018-12-31	$7,288,915
Value of total assets at end of year	2018-12-31	$92,792,148
Value of total assets at beginning of year	2018-12-31	$95,049,238
Total of administrative expenses incurred including professional, contract, advisory and management fees	2018-12-31	$85,492
Total interest from all sources	2018-12-31	$113,845
Total dividends received (eg from common stock, registered investment company shares)	2018-12-31	$1,602,339
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	$1,213,910
Administrative expenses professional fees incurred	2018-12-31	$500
Was this plan covered by a fidelity bond	2018-12-31	Yes
Value of fidelity bond cover	2018-12-31	$3,000,000
If this is an individual account plan, was there a blackout period	2018-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2018-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2018-12-31	No
Contributions received from participants	2018-12-31	$4,091,471
Participant contributions at end of year	2018-12-31	$2,176,346
Participant contributions at beginning of year	2018-12-31	$1,906,772
Income. Received or receivable in cash from other sources (including rollovers)	2018-12-31	$499,364
Other income not declared elsewhere	2018-12-31	$85,402
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
Value of net income/loss	2018-12-31	$-2,257,090
Value of net assets at end of year (total assets less liabilities)	2018-12-31	$92,792,148
Value of net assets at beginning of year (total assets less liabilities)	2018-12-31	$95,049,238
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
Investment advisory and management fees	2018-12-31	$60,000
Value of interest in registered invesment companies (eg mutual funds) at end of year	2018-12-31	$67,045,020
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2018-12-31	$69,737,504
Value of interest in pooled separate accounts at end of year	2018-12-31	$10,263,824
Value of interest in pooled separate accounts at beginning of year	2018-12-31	$10,941,126
Interest on participant loans	2018-12-31	$106,086
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2018-12-31	$455,235
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2018-12-31	$438,814
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2018-12-31	$438,814
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2018-12-31	$7,759
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2018-12-31	$-5,548,259
Net investment gain/loss from pooled separate accounts	2018-12-31	$207,995
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	$12,851,723
Assets. Invements in employer securities at beginning of year	2018-12-31	$12,025,022
Contributions received in cash from employer	2018-12-31	$2,698,080
Income. Dividends from common stock	2018-12-31	$388,429
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2018-12-31	$7,288,731
Contract administrator fees	2018-12-31	$24,992
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	$1,906,554
Aggregate carrying amount (costs) on sale of assets	2018-12-31	$1,758,831
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2018-12-31	No
Opinion of an independent qualified public accountant for this plan	2018-12-31	Unqualified
Accountancy firm name	2018-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2018-12-31	043499945
2017 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2017 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2017-12-31	$34,886
Total unrealized appreciation/depreciation of assets	2017-12-31	$34,886
Total income from all sources (including contributions)	2017-12-31	$17,461,258
Total loss/gain on sale of assets	2017-12-31	$91,397
Total of all expenses incurred	2017-12-31	$4,097,562
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2017-12-31	$3,983,836
Expenses. Certain deemed distributions of participant loans	2017-12-31	$10,093
Value of total corrective distributions	2017-12-31	$14,689
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2017-12-31	$6,352,766
Value of total assets at end of year	2017-12-31	$95,049,238
Value of total assets at beginning of year	2017-12-31	$81,685,542
Total of administrative expenses incurred including professional, contract, advisory and management fees	2017-12-31	$88,944
Total interest from all sources	2017-12-31	$90,940
Total dividends received (eg from common stock, registered investment company shares)	2017-12-31	$1,360,679
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	$979,204
Administrative expenses professional fees incurred	2017-12-31	$25,391
Was this plan covered by a fidelity bond	2017-12-31	Yes
Value of fidelity bond cover	2017-12-31	$3,000,000
If this is an individual account plan, was there a blackout period	2017-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2017-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2017-12-31	No
Contributions received from participants	2017-12-31	$3,840,556
Participant contributions at end of year	2017-12-31	$1,906,772
Participant contributions at beginning of year	2017-12-31	$1,888,383
Income. Received or receivable in cash from other sources (including rollovers)	2017-12-31	$80,983
Other income not declared elsewhere	2017-12-31	$88,908
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
Value of net income/loss	2017-12-31	$13,363,696
Value of net assets at end of year (total assets less liabilities)	2017-12-31	$95,049,238
Value of net assets at beginning of year (total assets less liabilities)	2017-12-31	$81,685,542
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
Investment advisory and management fees	2017-12-31	$63,553
Value of interest in registered invesment companies (eg mutual funds) at end of year	2017-12-31	$69,737,504
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2017-12-31	$55,960,773
Value of interest in pooled separate accounts at end of year	2017-12-31	$10,941,126
Value of interest in pooled separate accounts at beginning of year	2017-12-31	$11,036,869
Interest on participant loans	2017-12-31	$87,314
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2017-12-31	$438,814
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2017-12-31	$403,652
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2017-12-31	$403,652
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2017-12-31	$3,626
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2017-12-31	$9,266,813
Net investment gain/loss from pooled separate accounts	2017-12-31	$174,869
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	$12,025,022
Assets. Invements in employer securities at beginning of year	2017-12-31	$12,395,865
Contributions received in cash from employer	2017-12-31	$2,431,227
Income. Dividends from common stock	2017-12-31	$381,475
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2017-12-31	$3,983,836
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	$1,567,623
Aggregate carrying amount (costs) on sale of assets	2017-12-31	$1,476,226
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2017-12-31	No
Opinion of an independent qualified public accountant for this plan	2017-12-31	Unqualified
Accountancy firm name	2017-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2017-12-31	043499945
2016 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2016 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2016-12-31	$2,410,016
Total unrealized appreciation/depreciation of assets	2016-12-31	$2,410,016
Total income from all sources (including contributions)	2016-12-31	$14,436,824
Total loss/gain on sale of assets	2016-12-31	$138,891
Total of all expenses incurred	2016-12-31	$3,167,461
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2016-12-31	$3,077,694
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2016-12-31	$6,206,872
Value of total assets at end of year	2016-12-31	$81,685,542
Value of total assets at beginning of year	2016-12-31	$70,416,179
Total of administrative expenses incurred including professional, contract, advisory and management fees	2016-12-31	$89,767
Total interest from all sources	2016-12-31	$76,276
Total dividends received (eg from common stock, registered investment company shares)	2016-12-31	$1,217,420
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	$852,428
Administrative expenses professional fees incurred	2016-12-31	$10,946
Was this plan covered by a fidelity bond	2016-12-31	Yes
Value of fidelity bond cover	2016-12-31	$10,000,000
If this is an individual account plan, was there a blackout period	2016-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2016-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2016-12-31	No
Contributions received from participants	2016-12-31	$3,570,947
Participant contributions at end of year	2016-12-31	$1,888,383
Participant contributions at beginning of year	2016-12-31	$1,742,156
Income. Received or receivable in cash from other sources (including rollovers)	2016-12-31	$332,755
Other income not declared elsewhere	2016-12-31	$85,388
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
Value of net income/loss	2016-12-31	$11,269,363
Value of net assets at end of year (total assets less liabilities)	2016-12-31	$81,685,542
Value of net assets at beginning of year (total assets less liabilities)	2016-12-31	$70,416,179
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
Investment advisory and management fees	2016-12-31	$70,338
Value of interest in registered invesment companies (eg mutual funds) at end of year	2016-12-31	$55,960,773
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2016-12-31	$49,293,094
Value of interest in pooled separate accounts at end of year	2016-12-31	$11,036,869
Value of interest in pooled separate accounts at beginning of year	2016-12-31	$9,574,674
Interest on participant loans	2016-12-31	$75,603
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2016-12-31	$403,652
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2016-12-31	$339,783
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2016-12-31	$339,783
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2016-12-31	$673
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2016-12-31	$4,150,398
Net investment gain/loss from pooled separate accounts	2016-12-31	$151,563
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	$12,395,865
Assets. Invements in employer securities at beginning of year	2016-12-31	$9,466,472
Contributions received in cash from employer	2016-12-31	$2,303,170
Income. Dividends from common stock	2016-12-31	$364,992
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2016-12-31	$3,077,694
Contract administrator fees	2016-12-31	$8,483
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	$1,433,543
Aggregate carrying amount (costs) on sale of assets	2016-12-31	$1,294,652
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2016-12-31	No
Opinion of an independent qualified public accountant for this plan	2016-12-31	Unqualified
Accountancy firm name	2016-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2016-12-31	043499945
2015 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2015 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2015-12-31	$-140,988
Total unrealized appreciation/depreciation of assets	2015-12-31	$-140,988
Total income from all sources (including contributions)	2015-12-31	$6,169,970
Total loss/gain on sale of assets	2015-12-31	$-43,434
Total of all expenses incurred	2015-12-31	$3,590,119
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2015-12-31	$3,499,925
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2015-12-31	$5,889,793
Value of total assets at end of year	2015-12-31	$70,416,179
Value of total assets at beginning of year	2015-12-31	$67,836,328
Total of administrative expenses incurred including professional, contract, advisory and management fees	2015-12-31	$90,194
Total interest from all sources	2015-12-31	$74,021
Total dividends received (eg from common stock, registered investment company shares)	2015-12-31	$1,074,130
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	$711,915
Administrative expenses professional fees incurred	2015-12-31	$19,497
Was this plan covered by a fidelity bond	2015-12-31	Yes
Value of fidelity bond cover	2015-12-31	$10,000,000
If this is an individual account plan, was there a blackout period	2015-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2015-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2015-12-31	No
Contributions received from participants	2015-12-31	$3,421,458
Participant contributions at end of year	2015-12-31	$1,742,156
Participant contributions at beginning of year	2015-12-31	$1,625,154
Income. Received or receivable in cash from other sources (including rollovers)	2015-12-31	$345,917
Other income not declared elsewhere	2015-12-31	$92,394
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
Value of net income/loss	2015-12-31	$2,579,851
Value of net assets at end of year (total assets less liabilities)	2015-12-31	$70,416,179
Value of net assets at beginning of year (total assets less liabilities)	2015-12-31	$67,836,328
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
Investment advisory and management fees	2015-12-31	$66,694
Value of interest in registered invesment companies (eg mutual funds) at end of year	2015-12-31	$49,293,094
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2015-12-31	$46,543,594
Value of interest in pooled separate accounts at end of year	2015-12-31	$9,574,674
Value of interest in pooled separate accounts at beginning of year	2015-12-31	$9,948,387
Interest on participant loans	2015-12-31	$73,979
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2015-12-31	$339,783
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2015-12-31	$328,299
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2015-12-31	$328,299
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2015-12-31	$42
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2015-12-31	$-859,484
Net investment gain/loss from pooled separate accounts	2015-12-31	$83,538
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	$9,466,472
Assets. Invements in employer securities at beginning of year	2015-12-31	$9,390,894
Contributions received in cash from employer	2015-12-31	$2,122,418
Income. Dividends from common stock	2015-12-31	$362,215
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2015-12-31	$3,499,925
Contract administrator fees	2015-12-31	$4,003
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	$1,114,834
Aggregate carrying amount (costs) on sale of assets	2015-12-31	$1,158,268
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2015-12-31	No
Opinion of an independent qualified public accountant for this plan	2015-12-31	Unqualified
Accountancy firm name	2015-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2015-12-31	043499945
2014 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2014 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2014-12-31	$1,547,535
Total unrealized appreciation/depreciation of assets	2014-12-31	$1,547,535
Total income from all sources (including contributions)	2014-12-31	$10,550,723
Total loss/gain on sale of assets	2014-12-31	$45,392
Total of all expenses incurred	2014-12-31	$3,278,330
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2014-12-31	$3,187,386
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2014-12-31	$5,443,151
Value of total assets at end of year	2014-12-31	$67,836,328
Value of total assets at beginning of year	2014-12-31	$60,563,935
Total of administrative expenses incurred including professional, contract, advisory and management fees	2014-12-31	$90,944
Total interest from all sources	2014-12-31	$68,745
Total dividends received (eg from common stock, registered investment company shares)	2014-12-31	$1,020,608
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	$678,344
Administrative expenses professional fees incurred	2014-12-31	$25,224
Was this plan covered by a fidelity bond	2014-12-31	Yes
Value of fidelity bond cover	2014-12-31	$10,000,000
If this is an individual account plan, was there a blackout period	2014-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2014-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2014-12-31	No
Contributions received from participants	2014-12-31	$3,184,503
Participant contributions at end of year	2014-12-31	$1,625,154
Participant contributions at beginning of year	2014-12-31	$1,443,890
Income. Received or receivable in cash from other sources (including rollovers)	2014-12-31	$386,326
Other income not declared elsewhere	2014-12-31	$101,070
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
Value of net income/loss	2014-12-31	$7,272,393
Value of net assets at end of year (total assets less liabilities)	2014-12-31	$67,836,328
Value of net assets at beginning of year (total assets less liabilities)	2014-12-31	$60,563,935
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
Investment advisory and management fees	2014-12-31	$65,390
Value of interest in registered invesment companies (eg mutual funds) at end of year	2014-12-31	$46,543,594
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2014-12-31	$41,329,855
Value of interest in pooled separate accounts at end of year	2014-12-31	$9,948,387
Value of interest in pooled separate accounts at beginning of year	2014-12-31	$10,165,562
Interest on participant loans	2014-12-31	$68,667
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2014-12-31	$328,299
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2014-12-31	$252,115
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2014-12-31	$252,115
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2014-12-31	$78
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2014-12-31	$2,165,273
Net investment gain/loss from pooled separate accounts	2014-12-31	$158,949
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	$9,390,894
Assets. Invements in employer securities at beginning of year	2014-12-31	$7,372,513
Contributions received in cash from employer	2014-12-31	$1,872,322
Income. Dividends from common stock	2014-12-31	$342,264
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2014-12-31	$3,187,386
Contract administrator fees	2014-12-31	$330
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	$774,716
Aggregate carrying amount (costs) on sale of assets	2014-12-31	$729,324
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2014-12-31	No
Opinion of an independent qualified public accountant for this plan	2014-12-31	Unqualified
Accountancy firm name	2014-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2014-12-31	043499945
2013 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2013 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2013-12-31	$989,759
Total unrealized appreciation/depreciation of assets	2013-12-31	$989,759
Total income from all sources (including contributions)	2013-12-31	$13,376,196
Total loss/gain on sale of assets	2013-12-31	$68,179
Total of all expenses incurred	2013-12-31	$3,400,059
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2013-12-31	$3,339,668
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2013-12-31	$4,695,755
Value of total assets at end of year	2013-12-31	$60,563,935
Value of total assets at beginning of year	2013-12-31	$50,587,798
Total of administrative expenses incurred including professional, contract, advisory and management fees	2013-12-31	$60,391
Total interest from all sources	2013-12-31	$64,779
Total dividends received (eg from common stock, registered investment company shares)	2013-12-31	$868,934
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	$551,488
Administrative expenses professional fees incurred	2013-12-31	$14,475
Was this plan covered by a fidelity bond	2013-12-31	Yes
Value of fidelity bond cover	2013-12-31	$10,000,000
If this is an individual account plan, was there a blackout period	2013-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2013-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2013-12-31	No
Contributions received from participants	2013-12-31	$2,887,209
Participant contributions at end of year	2013-12-31	$1,443,890
Participant contributions at beginning of year	2013-12-31	$1,492,432
Income. Received or receivable in cash from other sources (including rollovers)	2013-12-31	$212,103
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
Value of net income/loss	2013-12-31	$9,976,137
Value of net assets at end of year (total assets less liabilities)	2013-12-31	$60,563,935
Value of net assets at beginning of year (total assets less liabilities)	2013-12-31	$50,587,798
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
Investment advisory and management fees	2013-12-31	$44,141
Value of interest in registered invesment companies (eg mutual funds) at end of year	2013-12-31	$41,329,855
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2013-12-31	$31,381,444
Value of interest in pooled separate accounts at end of year	2013-12-31	$10,165,562
Value of interest in pooled separate accounts at beginning of year	2013-12-31	$11,572,057
Interest on participant loans	2013-12-31	$64,756
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2013-12-31	$252,115
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2013-12-31	$205,407
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2013-12-31	$205,407
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2013-12-31	$23
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2013-12-31	$6,628,008
Net investment gain/loss from pooled separate accounts	2013-12-31	$60,782
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	Yes
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	$7,372,513
Assets. Invements in employer securities at beginning of year	2013-12-31	$5,936,458
Contributions received in cash from employer	2013-12-31	$1,596,443
Income. Dividends from common stock	2013-12-31	$317,446
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2013-12-31	$3,339,668
Contract administrator fees	2013-12-31	$1,775
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	$703,438
Aggregate carrying amount (costs) on sale of assets	2013-12-31	$635,259
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2013-12-31	No
Opinion of an independent qualified public accountant for this plan	2013-12-31	Unqualified
Accountancy firm name	2013-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2013-12-31	043499945
2012 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2012 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2012-12-31	$-501,368
Total unrealized appreciation/depreciation of assets	2012-12-31	$-501,368
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	$8,833,464
Total loss/gain on sale of assets	2012-12-31	$-27,247
Total of all expenses incurred	2012-12-31	$3,177,912
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2012-12-31	$3,177,912
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2012-12-31	$4,226,062
Value of total assets at end of year	2012-12-31	$50,587,798
Value of total assets at beginning of year	2012-12-31	$44,932,246
Total interest from all sources	2012-12-31	$61,937
Total dividends received (eg from common stock, registered investment company shares)	2012-12-31	$847,914
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2012-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2012-12-31	$548,537
Was this plan covered by a fidelity bond	2012-12-31	Yes
Value of fidelity bond cover	2012-12-31	$10,000,000
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	$2,669,422
Participant contributions at end of year	2012-12-31	$1,492,432
Participant contributions at beginning of year	2012-12-31	$1,226,998
Income. Received or receivable in cash from other sources (including rollovers)	2012-12-31	$181,906
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	$5,655,552
Value of net assets at end of year (total assets less liabilities)	2012-12-31	$50,587,798
Value of net assets at beginning of year (total assets less liabilities)	2012-12-31	$44,932,246
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
Value of interest in registered invesment companies (eg mutual funds) at end of year	2012-12-31	$31,381,444
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2012-12-31	$26,656,420
Value of interest in pooled separate accounts at end of year	2012-12-31	$11,572,057
Value of interest in pooled separate accounts at beginning of year	2012-12-31	$10,763,723
Interest on participant loans	2012-12-31	$61,852
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2012-12-31	$205,407
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2012-12-31	$213,573
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2012-12-31	$213,573
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2012-12-31	$85
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2012-12-31	$0
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2012-12-31	$0
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2012-12-31	$3,456,484
Net investment gain/loss from pooled separate accounts	2012-12-31	$769,682
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
Assets. Invements in employer securities at end of year	2012-12-31	$5,936,458
Assets. Invements in employer securities at beginning of year	2012-12-31	$6,071,532
Contributions received in cash from employer	2012-12-31	$1,374,734
Income. Dividends from common stock	2012-12-31	$299,377
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2012-12-31	$3,177,912
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
Aggregate proceeds on sale of assets	2012-12-31	$486,685
Aggregate carrying amount (costs) on sale of assets	2012-12-31	$513,932
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2012-12-31	No
Opinion of an independent qualified public accountant for this plan	2012-12-31	Unqualified
Accountancy firm name	2012-12-31	MCGLADREY LLP
Accountancy firm EIN	2012-12-31	420714325
2011 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2011 401k financial data
Unrealized appreciation/depreciation of real estate assets	2011-12-31	$1,135,975
Total unrealized appreciation/depreciation of assets	2011-12-31	$1,135,975
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	$5,035,291
Total loss/gain on sale of assets	2011-12-31	$59,140
Total of all expenses incurred	2011-12-31	$2,410,109
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2011-12-31	$2,410,109
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2011-12-31	$4,021,345
Value of total assets at end of year	2011-12-31	$44,932,246
Value of total assets at beginning of year	2011-12-31	$42,307,064
Total of administrative expenses incurred including professional, contract, advisory and management fees	2011-12-31	$0
Total interest from all sources	2011-12-31	$58,178
Total dividends received (eg from common stock, registered investment company shares)	2011-12-31	$784,092
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2011-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2011-12-31	$491,139
Administrative expenses professional fees incurred	2011-12-31	$0
Was this plan covered by a fidelity bond	2011-12-31	Yes
Value of fidelity bond cover	2011-12-31	$10,000,000
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	$2,459,911
Participant contributions at end of year	2011-12-31	$1,226,998
Participant contributions at beginning of year	2011-12-31	$1,143,489
Income. Received or receivable in cash from other sources (including rollovers)	2011-12-31	$360,958
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	$2,625,182
Value of net assets at end of year (total assets less liabilities)	2011-12-31	$44,932,246
Value of net assets at beginning of year (total assets less liabilities)	2011-12-31	$42,307,064
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
Investment advisory and management fees	2011-12-31	$0
Value of interest in registered invesment companies (eg mutual funds) at end of year	2011-12-31	$26,656,420
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2011-12-31	$27,366,453
Value of interest in pooled separate accounts at end of year	2011-12-31	$10,763,723
Value of interest in pooled separate accounts at beginning of year	2011-12-31	$8,748,803
Interest on participant loans	2011-12-31	$58,160
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2011-12-31	$213,573
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2011-12-31	$178,985
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2011-12-31	$178,985
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2011-12-31	$18
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2011-12-31	$-1,245,936
Net investment gain/loss from pooled separate accounts	2011-12-31	$222,497
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
Assets. Invements in employer securities at end of year	2011-12-31	$6,071,532
Assets. Invements in employer securities at beginning of year	2011-12-31	$4,866,815
Contributions received in cash from employer	2011-12-31	$1,200,476
Employer contributions (assets) at end of year	2011-12-31	$0
Employer contributions (assets) at beginning of year	2011-12-31	$2,519
Income. Dividends from common stock	2011-12-31	$292,953
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2011-12-31	$2,410,109
Contract administrator fees	2011-12-31	$0
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
Aggregate proceeds on sale of assets	2011-12-31	$852,998
Aggregate carrying amount (costs) on sale of assets	2011-12-31	$793,858
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2011-12-31	No
Opinion of an independent qualified public accountant for this plan	2011-12-31	Unqualified
Accountancy firm name	2011-12-31	MCGLADREY LLP
Accountancy firm EIN	2011-12-31	420714325
2010 : UNITIL CORPORATION TAX DEFERRED SAVINGS AND INVESTMENT PLAN 2010 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2010-12-31	$-13,462
Total unrealized appreciation/depreciation of assets	2010-12-31	$-13,462
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	$7,484,568
Total loss/gain on sale of assets	2010-12-31	$-15,376
Total of all expenses incurred	2010-12-31	$2,133,808
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2010-12-31	$2,130,907
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2010-12-31	$3,559,756
Value of total assets at end of year	2010-12-31	$42,307,065
Value of total assets at beginning of year	2010-12-31	$36,956,305
Total of administrative expenses incurred including professional, contract, advisory and management fees	2010-12-31	$2,901
Total interest from all sources	2010-12-31	$60,511
Total dividends received (eg from common stock, registered investment company shares)	2010-12-31	$654,547
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2010-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2010-12-31	$374,170
Administrative expenses professional fees incurred	2010-12-31	$0
Was this plan covered by a fidelity bond	2010-12-31	Yes
Value of fidelity bond cover	2010-12-31	$10,000,000
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	$2,326,950
Participant contributions at end of year	2010-12-31	$1,143,489
Participant contributions at beginning of year	2010-12-31	$1,019,169
Income. Received or receivable in cash from other sources (including rollovers)	2010-12-31	$245,181
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	$5,350,760
Value of net assets at end of year (total assets less liabilities)	2010-12-31	$42,307,065
Value of net assets at beginning of year (total assets less liabilities)	2010-12-31	$36,956,305
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
Investment advisory and management fees	2010-12-31	$1,351
Value of interest in registered invesment companies (eg mutual funds) at end of year	2010-12-31	$27,366,454
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2010-12-31	$23,458,153
Value of interest in pooled separate accounts at end of year	2010-12-31	$8,748,803
Value of interest in pooled separate accounts at beginning of year	2010-12-31	$7,725,055
Interest on participant loans	2010-12-31	$60,487
Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year	2010-12-31	$178,985
Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year	2010-12-31	$219,882
Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year	2010-12-31	$219,882
Interest earned from interest bearing cash (including money market accounts and certificates of deposit)	2010-12-31	$24
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2010-12-31	$2,751,718
Net investment gain/loss from pooled separate accounts	2010-12-31	$486,874
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
Assets. Invements in employer securities at end of year	2010-12-31	$4,866,815
Assets. Invements in employer securities at beginning of year	2010-12-31	$4,534,046
Contributions received in cash from employer	2010-12-31	$987,625
Employer contributions (assets) at end of year	2010-12-31	$2,519
Income. Dividends from common stock	2010-12-31	$280,377
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2010-12-31	$2,130,907
Contract administrator fees	2010-12-31	$1,550
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
Aggregate proceeds on sale of assets	2010-12-31	$450,535
Aggregate carrying amount (costs) on sale of assets	2010-12-31	$465,911
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2010-12-31	No
Opinion of an independent qualified public accountant for this plan	2010-12-31	Unqualified
Accountancy firm name	2010-12-31	MCGLADREY & PULLEN, LLP
Accountancy firm EIN	2010-12-31	420714325