401k Plan data: CUBIST PHARMACEUTICALS INC. 401(K) PLAN plan

CUBIST PHARMACEUTICALS INC. 401(K) PLAN 401k Plan overview

Plan Name	CUBIST PHARMACEUTICALS INC. 401(K) PLAN
Plan identification number	001

CUBIST PHARMACEUTICALS INC. 401(K) 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 requiring that all or part of employer contributions be invested and held, at least for a limited period, in employer securities.
U.S.-based plan that covers residents of Puerto Rico and is qualified under both Code section 401 and section 1165 of the Puerto Rico Code.

401k Sponsoring company profile

CUBIST PHARMACEUTICALS, INC. has sponsored the creation of one or more 401k plans.

Company Name: CUBIST PHARMACEUTICALS, INC.

Employer identification number (EIN): 223192085

NAIC Classification: 325410

Additional information about CUBIST PHARMACEUTICALS, INC.

Jurisdiction of Incorporation: State of Delaware Division of Corporations

Incorporation Date: 1992-05-01

Company Identification Number: 2296420

Legal Registered Office Address: Corporation Trust Center
1209 Orange St
Wilmington
United States of America (USA)
19801

More information about CUBIST PHARMACEUTICALS, INC.

Form 5500 Filing Information

Submission information for form 5500 for 401k plan CUBIST PHARMACEUTICALS INC. 401(K) PLAN

Plan id# Filing Submission Date Name of Administrator Date Administrator Signed Name of Company Sponsor Date Sponsor Signed
001 2015-01-01 MARK MCDONOUGH
001 2014-01-01 CAROLINE CHEVALIER CAROLINE CHEVALIER 2015-06-03
001 2013-01-01 CAROLINE CHEVALIER
001 2012-01-01 SHARON LEVINE SHARON LEVINE 2013-10-08
001 2011-01-01 CAROLINE CHEVALIER CAROLINE CHEVALIER 2012-07-02
001 2010-01-01 CAROLINE CHEVALIER CAROLINE CHEVALIER 2011-06-28
001 2009-01-01 SHARON LEVINE

Plan id#	Filing Submission Date	Name of Administrator	Name of Company Sponsor	Date Sponsor Signed
001	2015-01-01	MARK MCDONOUGH
001	2014-01-01	CAROLINE CHEVALIER	CAROLINE CHEVALIER	2015-06-03
001	2013-01-01	CAROLINE CHEVALIER
001	2012-01-01	SHARON LEVINE	SHARON LEVINE	2013-10-08
001	2011-01-01	CAROLINE CHEVALIER	CAROLINE CHEVALIER	2012-07-02
001	2010-01-01	CAROLINE CHEVALIER	CAROLINE CHEVALIER	2011-06-28
001	2009-01-01	SHARON LEVINE

Plan Statistics for CUBIST PHARMACEUTICALS INC. 401(K) PLAN

401k plan membership statisitcs for CUBIST PHARMACEUTICALS INC. 401(K) PLAN

Measure Date Value
2015: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2015 401k membership
Total participants, beginning-of-year 2015-01-01 1,434
Total number of active participants reported on line 7a of the Form 5500 2015-01-01 0
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 0
Total of all active and inactive participants 2015-01-01 0
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2015-01-01 0
Total participants 2015-01-01 0
Number of participants with account balances 2015-01-01 0
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2015-01-01 0
2014: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2014 401k membership
Total participants, beginning-of-year 2014-01-01 1,047
Total number of active participants reported on line 7a of the Form 5500 2014-01-01 1,154
Number of retired or separated participants receiving benefits 2014-01-01 0
Number of other retired or separated participants entitled to future benefits 2014-01-01 280
Total of all active and inactive participants 2014-01-01 1,434
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2014-01-01 0
Total participants 2014-01-01 1,434
Number of participants with account balances 2014-01-01 1,154
2013: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2013 401k membership
Total participants, beginning-of-year 2013-01-01 898
Total number of active participants reported on line 7a of the Form 5500 2013-01-01 895
Number of retired or separated participants receiving benefits 2013-01-01 0
Number of other retired or separated participants entitled to future benefits 2013-01-01 178
Total of all active and inactive participants 2013-01-01 1,073
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2013-01-01 0
Total participants 2013-01-01 1,073
Number of participants with account balances 2013-01-01 1,047
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2013-01-01 0
2012: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2012 401k membership
Total participants, beginning-of-year 2012-01-01 816
Total number of active participants reported on line 7a of the Form 5500 2012-01-01 751
Number of retired or separated participants receiving benefits 2012-01-01 0
Number of other retired or separated participants entitled to future benefits 2012-01-01 146
Total of all active and inactive participants 2012-01-01 897
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2012-01-01 0
Total participants 2012-01-01 897
Number of participants with account balances 2012-01-01 865
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2012-01-01 0
2011: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2011 401k membership
Total participants, beginning-of-year 2011-01-01 769
Total number of active participants reported on line 7a of the Form 5500 2011-01-01 661
Number of retired or separated participants receiving benefits 2011-01-01 0
Number of other retired or separated participants entitled to future benefits 2011-01-01 149
Total of all active and inactive participants 2011-01-01 810
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2011-01-01 0
Total participants 2011-01-01 810
Number of participants with account balances 2011-01-01 790
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2011-01-01 0
2010: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2010 401k membership
Total participants, beginning-of-year 2010-01-01 803
Total number of active participants reported on line 7a of the Form 5500 2010-01-01 625
Number of retired or separated participants receiving benefits 2010-01-01 0
Number of other retired or separated participants entitled to future benefits 2010-01-01 143
Total of all active and inactive participants 2010-01-01 768
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2010-01-01 0
Total participants 2010-01-01 768
Number of participants with account balances 2010-01-01 744
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2010-01-01 0
2009: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2009 401k membership
Total participants, beginning-of-year 2009-01-01 629
Total number of active participants reported on line 7a of the Form 5500 2009-01-01 683
Number of retired or separated participants receiving benefits 2009-01-01 0
Number of other retired or separated participants entitled to future benefits 2009-01-01 120
Total of all active and inactive participants 2009-01-01 803
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2009-01-01 0
Total participants 2009-01-01 803
Number of participants with account balances 2009-01-01 683
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2009-01-01 0

Measure	Date	Value
2015: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2015 401k membership
Total participants, beginning-of-year	2015-01-01	1,434
Total number of active participants reported on line 7a of the Form 5500	2015-01-01	0
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	0
Total of all active and inactive participants	2015-01-01	0
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2015-01-01	0
Total participants	2015-01-01	0
Number of participants with account balances	2015-01-01	0
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2015-01-01	0
2014: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2014 401k membership
Total participants, beginning-of-year	2014-01-01	1,047
Total number of active participants reported on line 7a of the Form 5500	2014-01-01	1,154
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	280
Total of all active and inactive participants	2014-01-01	1,434
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2014-01-01	0
Total participants	2014-01-01	1,434
Number of participants with account balances	2014-01-01	1,154
2013: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2013 401k membership
Total participants, beginning-of-year	2013-01-01	898
Total number of active participants reported on line 7a of the Form 5500	2013-01-01	895
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	178
Total of all active and inactive participants	2013-01-01	1,073
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2013-01-01	0
Total participants	2013-01-01	1,073
Number of participants with account balances	2013-01-01	1,047
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2013-01-01	0
2012: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2012 401k membership
Total participants, beginning-of-year	2012-01-01	816
Total number of active participants reported on line 7a of the Form 5500	2012-01-01	751
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	146
Total of all active and inactive participants	2012-01-01	897
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2012-01-01	0
Total participants	2012-01-01	897
Number of participants with account balances	2012-01-01	865
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2012-01-01	0
2011: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2011 401k membership
Total participants, beginning-of-year	2011-01-01	769
Total number of active participants reported on line 7a of the Form 5500	2011-01-01	661
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	149
Total of all active and inactive participants	2011-01-01	810
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2011-01-01	0
Total participants	2011-01-01	810
Number of participants with account balances	2011-01-01	790
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2011-01-01	0
2010: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2010 401k membership
Total participants, beginning-of-year	2010-01-01	803
Total number of active participants reported on line 7a of the Form 5500	2010-01-01	625
Number of retired or separated participants receiving benefits	2010-01-01	0
Number of other retired or separated participants entitled to future benefits	2010-01-01	143
Total of all active and inactive participants	2010-01-01	768
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2010-01-01	0
Total participants	2010-01-01	768
Number of participants with account balances	2010-01-01	744
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2010-01-01	0
2009: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2009 401k membership
Total participants, beginning-of-year	2009-01-01	629
Total number of active participants reported on line 7a of the Form 5500	2009-01-01	683
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	120
Total of all active and inactive participants	2009-01-01	803
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2009-01-01	0
Total participants	2009-01-01	803
Number of participants with account balances	2009-01-01	683
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2009-01-01	0

Financial Data on CUBIST PHARMACEUTICALS INC. 401(K) PLAN

Measure	Date	Value
2015 : CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2015 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2015-06-15	$-37,362,730
Total unrealized appreciation/depreciation of assets	2015-06-15	$-37,362,730
Total transfer of assets from this plan	2015-06-15	$0
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2015-06-15	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2015-06-15	$0
Total income from all sources (including contributions)	2015-06-15	$9,388,235
Total loss/gain on sale of assets	2015-06-15	$38,156,017
Total of all expenses incurred	2015-06-15	$173,464,511
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2015-06-15	$173,375,736
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2015-06-15	$3,043,600
Value of total assets at end of year	2015-06-15	$0
Value of total assets at beginning of year	2015-06-15	$164,076,276
Total of administrative expenses incurred including professional, contract, advisory and management fees	2015-06-15	$88,775
Total interest from all sources	2015-06-15	$88,443
Total dividends received (eg from common stock, registered investment company shares)	2015-06-15	$241,366
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2015-06-15	Yes
Value of any plan assets that reverted to the employer resulting from resoluton to terminate the plan	2015-06-15	$0
Total dividends received from registered investment company shares (eg mutual funds)	2015-06-15	$241,366
Was this plan covered by a fidelity bond	2015-06-15	Yes
Value of fidelity bond cover	2015-06-15	$2,000,000
If this is an individual account plan, was there a blackout period	2015-06-15	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2015-06-15	$0
Were there any nonexempt tranactions with any party-in-interest	2015-06-15	No
Contributions received from participants	2015-06-15	$2,027,313
Participant contributions at end of year	2015-06-15	$0
Participant contributions at beginning of year	2015-06-15	$1,273,009
Income. Received or receivable in cash from other sources (including rollovers)	2015-06-15	$10,431
Other income not declared elsewhere	2015-06-15	$11,569
Administrative expenses (other) incurred	2015-06-15	$88,775
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2015-06-15	No
Value of net income/loss	2015-06-15	$-164,076,276
Value of net assets at end of year (total assets less liabilities)	2015-06-15	$0
Value of net assets at beginning of year (total assets less liabilities)	2015-06-15	$164,076,276
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2015-06-15	No
Were any loans by the plan or fixed income obligations due to the plan in default	2015-06-15	No
Were any leases to which the plan was party in default or uncollectible	2015-06-15	No
Value of interest in registered invesment companies (eg mutual funds) at end of year	2015-06-15	$0
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2015-06-15	$52,323,639
Value of interest in pooled separate accounts at end of year	2015-06-15	$0
Value of interest in pooled separate accounts at beginning of year	2015-06-15	$39,682,255
Interest on participant loans	2015-06-15	$5,254
Interest earned on other investments	2015-06-15	$83,189
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2015-06-15	$0
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2015-06-15	$10,992,677
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2015-06-15	$3,090,076
Net investment gain/loss from pooled separate accounts	2015-06-15	$2,119,894
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2015-06-15	No
Was there a failure to transmit to the plan any participant contributions	2015-06-15	No
Has the plan failed to provide any benefit when due under the plan	2015-06-15	No
Assets. Invements in employer securities at end of year	2015-06-15	$0
Assets. Invements in employer securities at beginning of year	2015-06-15	$58,194,741
Contributions received in cash from employer	2015-06-15	$1,005,856
Employer contributions (assets) at end of year	2015-06-15	$0
Employer contributions (assets) at beginning of year	2015-06-15	$1,609,955
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2015-06-15	$173,375,736
Did the plan have assets held for investment	2015-06-15	No
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	2015-06-15	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2015-06-15	Yes
Aggregate proceeds on sale of assets	2015-06-15	$60,597,982
Aggregate carrying amount (costs) on sale of assets	2015-06-15	$22,441,965
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2015-06-15	Yes
Opinion of an independent qualified public accountant for this plan	2015-06-15	Disclaimer
Accountancy firm name	2015-06-15	CARON & BLETZER, PLLC
Accountancy firm EIN	2015-06-15	043499945
2014 : CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2014 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2014-12-31	$13,410,420
Total unrealized appreciation/depreciation of assets	2014-12-31	$13,410,420
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2014-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2014-12-31	$0
Total income from all sources (including contributions)	2014-12-31	$47,548,480
Total loss/gain on sale of assets	2014-12-31	$5,557,377
Total of all expenses incurred	2014-12-31	$20,163,880
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2014-12-31	$20,101,085
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2014-12-31	$23,167,133
Value of total assets at end of year	2014-12-31	$164,076,276
Value of total assets at beginning of year	2014-12-31	$136,691,676
Total of administrative expenses incurred including professional, contract, advisory and management fees	2014-12-31	$62,795
Total interest from all sources	2014-12-31	$260,771
Total dividends received (eg from common stock, registered investment company shares)	2014-12-31	$990,885
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	$990,885
Was this plan covered by a fidelity bond	2014-12-31	Yes
Value of fidelity bond cover	2014-12-31	$2,000,000
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	$12,126,785
Participant contributions at end of year	2014-12-31	$1,273,009
Participant contributions at beginning of year	2014-12-31	$1,117,611
Income. Received or receivable in cash from other sources (including rollovers)	2014-12-31	$2,957,603
Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries)	2014-12-31	$186,948
Other income not declared elsewhere	2014-12-31	$2,052,309
Administrative expenses (other) incurred	2014-12-31	$62,795
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	$27,384,600
Value of net assets at end of year (total assets less liabilities)	2014-12-31	$164,076,276
Value of net assets at beginning of year (total assets less liabilities)	2014-12-31	$136,691,676
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
Value of interest in registered invesment companies (eg mutual funds) at end of year	2014-12-31	$52,323,639
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2014-12-31	$44,324,989
Value of interest in pooled separate accounts at end of year	2014-12-31	$39,682,255
Value of interest in pooled separate accounts at beginning of year	2014-12-31	$38,133,003
Interest on participant loans	2014-12-31	$48,641
Interest earned on other investments	2014-12-31	$212,130
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2014-12-31	$10,992,677
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2014-12-31	$10,394,089
Expenses. Payments to insurance carriers foe the provision of benefits	2014-12-31	$19,339,553
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2014-12-31	$800,978
Net investment gain/loss from pooled separate accounts	2014-12-31	$1,308,607
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	$58,194,741
Assets. Invements in employer securities at beginning of year	2014-12-31	$41,118,542
Contributions received in cash from employer	2014-12-31	$8,082,745
Employer contributions (assets) at end of year	2014-12-31	$1,609,955
Employer contributions (assets) at beginning of year	2014-12-31	$1,603,442
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2014-12-31	$574,584
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	$10,481,641
Aggregate carrying amount (costs) on sale of assets	2014-12-31	$4,924,264
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2014-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2014-12-31	Disclaimer
Accountancy firm name	2014-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2014-12-31	043499945
2013 : CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2013 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2013-12-31	$13,509,317
Total unrealized appreciation/depreciation of assets	2013-12-31	$13,509,317
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2013-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2013-12-31	$0
Total income from all sources (including contributions)	2013-12-31	$52,942,770
Total loss/gain on sale of assets	2013-12-31	$2,857,737
Total of all expenses incurred	2013-12-31	$6,288,289
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2013-12-31	$6,225,422
Value of total corrective distributions	2013-12-31	$2,228
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2013-12-31	$20,139,121
Value of total assets at end of year	2013-12-31	$136,691,676
Value of total assets at beginning of year	2013-12-31	$90,037,195
Total of administrative expenses incurred including professional, contract, advisory and management fees	2013-12-31	$60,639
Total interest from all sources	2013-12-31	$236,439
Total dividends received (eg from common stock, registered investment company shares)	2013-12-31	$479,264
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	$479,264
Was this plan covered by a fidelity bond	2013-12-31	Yes
Value of fidelity bond cover	2013-12-31	$2,000,000
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	$10,006,474
Participant contributions at end of year	2013-12-31	$1,117,611
Participant contributions at beginning of year	2013-12-31	$862,010
Income. Received or receivable in cash from other sources (including rollovers)	2013-12-31	$3,417,009
Other income not declared elsewhere	2013-12-31	$53,563
Administrative expenses (other) incurred	2013-12-31	$60,639
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	$46,654,481
Value of net assets at end of year (total assets less liabilities)	2013-12-31	$136,691,676
Value of net assets at beginning of year (total assets less liabilities)	2013-12-31	$90,037,195
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
Value of interest in registered invesment companies (eg mutual funds) at end of year	2013-12-31	$44,324,989
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2013-12-31	$23,171,385
Value of interest in pooled separate accounts at end of year	2013-12-31	$38,133,003
Value of interest in pooled separate accounts at beginning of year	2013-12-31	$32,043,879
Interest on participant loans	2013-12-31	$42,150
Interest earned on other investments	2013-12-31	$194,289
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2013-12-31	$10,394,089
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2013-12-31	$8,282,707
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2013-12-31	$6,578,268
Net investment gain/loss from pooled separate accounts	2013-12-31	$9,089,061
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	$41,118,542
Assets. Invements in employer securities at beginning of year	2013-12-31	$24,803,377
Contributions received in cash from employer	2013-12-31	$6,715,638
Employer contributions (assets) at end of year	2013-12-31	$1,603,442
Employer contributions (assets) at beginning of year	2013-12-31	$873,837
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2013-12-31	$6,225,422
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	$6,316,278
Aggregate carrying amount (costs) on sale of assets	2013-12-31	$3,458,541
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2013-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2013-12-31	Disclaimer
Accountancy firm name	2013-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2013-12-31	043499945
2012 : CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2012 401k financial data
Total unrealized appreciation/depreciation of assets	2012-12-31	$0
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	$22,678,840
Total loss/gain on sale of assets	2012-12-31	$0
Total of all expenses incurred	2012-12-31	$5,940,374
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2012-12-31	$5,765,931
Value of total corrective distributions	2012-12-31	$116,147
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2012-12-31	$13,919,819
Value of total assets at end of year	2012-12-31	$90,037,195
Value of total assets at beginning of year	2012-12-31	$73,298,729
Total of administrative expenses incurred including professional, contract, advisory and management fees	2012-12-31	$58,296
Total interest from all sources	2012-12-31	$223,323
Total dividends received (eg from common stock, registered investment company shares)	2012-12-31	$322,402
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	$322,402
Was this plan covered by a fidelity bond	2012-12-31	Yes
Value of fidelity bond cover	2012-12-31	$2,000,000
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	$8,103,243
Participant contributions at end of year	2012-12-31	$862,010
Participant contributions at beginning of year	2012-12-31	$710,727
Participant contributions at beginning of year	2012-12-31	$169,104
Income. Received or receivable in cash from other sources (including rollovers)	2012-12-31	$1,497,695
Other income not declared elsewhere	2012-12-31	$50,000
Administrative expenses (other) incurred	2012-12-31	$58,296
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	$16,738,466
Value of net assets at end of year (total assets less liabilities)	2012-12-31	$90,037,195
Value of net assets at beginning of year (total assets less liabilities)	2012-12-31	$73,298,729
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	$23,171,385
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2012-12-31	$14,371,326
Value of interest in pooled separate accounts at end of year	2012-12-31	$32,043,879
Value of interest in pooled separate accounts at beginning of year	2012-12-31	$26,892,775
Interest on participant loans	2012-12-31	$35,260
Interest earned on other investments	2012-12-31	$188,063
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2012-12-31	$8,282,707
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2012-12-31	$7,547,891
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2012-12-31	$3,529,378
Net investment gain/loss from pooled separate accounts	2012-12-31	$4,633,918
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	$24,803,377
Assets. Invements in employer securities at beginning of year	2012-12-31	$22,780,212
Contributions received in cash from employer	2012-12-31	$4,318,881
Employer contributions (assets) at end of year	2012-12-31	$873,837
Employer contributions (assets) at beginning of year	2012-12-31	$826,694
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2012-12-31	$5,765,931
Did the plan have assets held for investment	2012-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2012-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2012-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2012-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2012-12-31	Disclaimer
Accountancy firm name	2012-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2012-12-31	043499945
2011 : CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2011 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2011-12-31	$9,470,387
Total unrealized appreciation/depreciation of assets	2011-12-31	$9,470,387
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	$21,721,433
Total loss/gain on sale of assets	2011-12-31	$1,241,932
Total of all expenses incurred	2011-12-31	$3,477,915
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2011-12-31	$3,413,442
Value of total corrective distributions	2011-12-31	$7,838
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2011-12-31	$11,647,249
Value of total assets at end of year	2011-12-31	$73,298,729
Value of total assets at beginning of year	2011-12-31	$55,055,211
Total of administrative expenses incurred including professional, contract, advisory and management fees	2011-12-31	$56,635
Total interest from all sources	2011-12-31	$208,685
Total dividends received (eg from common stock, registered investment company shares)	2011-12-31	$208,913
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	$208,913
Was this plan covered by a fidelity bond	2011-12-31	Yes
Value of fidelity bond cover	2011-12-31	$2,000,000
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	$7,255,345
Participant contributions at end of year	2011-12-31	$710,727
Participant contributions at beginning of year	2011-12-31	$742,093
Participant contributions at end of year	2011-12-31	$169,104
Participant contributions at beginning of year	2011-12-31	$556
Income. Received or receivable in cash from other sources (including rollovers)	2011-12-31	$634,808
Other income not declared elsewhere	2011-12-31	$54,460
Administrative expenses (other) incurred	2011-12-31	$56,635
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	$18,243,518
Value of net assets at end of year (total assets less liabilities)	2011-12-31	$73,298,729
Value of net assets at beginning of year (total assets less liabilities)	2011-12-31	$55,055,211
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
Value of interest in registered invesment companies (eg mutual funds) at end of year	2011-12-31	$14,371,326
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2011-12-31	$10,830,054
Value of interest in pooled separate accounts at end of year	2011-12-31	$26,892,775
Value of interest in pooled separate accounts at beginning of year	2011-12-31	$24,241,764
Interest on participant loans	2011-12-31	$27,605
Interest earned on other investments	2011-12-31	$181,080
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2011-12-31	$7,547,891
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2011-12-31	$6,581,417
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2011-12-31	$-606,240
Net investment gain/loss from pooled separate accounts	2011-12-31	$-503,953
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	$22,780,212
Assets. Invements in employer securities at beginning of year	2011-12-31	$11,934,717
Contributions received in cash from employer	2011-12-31	$3,757,096
Employer contributions (assets) at end of year	2011-12-31	$826,694
Employer contributions (assets) at beginning of year	2011-12-31	$724,610
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2011-12-31	$3,413,442
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	$3,528,197
Aggregate carrying amount (costs) on sale of assets	2011-12-31	$2,286,265
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2011-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2011-12-31	Disclaimer
Accountancy firm name	2011-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2011-12-31	043499945
2010 : CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2010 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2010-12-31	$1,013,945
Total unrealized appreciation/depreciation of assets	2010-12-31	$1,013,945
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	$16,779,375
Total loss/gain on sale of assets	2010-12-31	$280,046
Total of all expenses incurred	2010-12-31	$2,297,498
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2010-12-31	$2,242,637
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2010-12-31	$10,810,196
Value of total assets at end of year	2010-12-31	$55,055,211
Value of total assets at beginning of year	2010-12-31	$40,573,334
Total of administrative expenses incurred including professional, contract, advisory and management fees	2010-12-31	$54,861
Total interest from all sources	2010-12-31	$200,490
Total dividends received (eg from common stock, registered investment company shares)	2010-12-31	$152,936
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	$152,936
Was this plan covered by a fidelity bond	2010-12-31	Yes
Value of fidelity bond cover	2010-12-31	$2,000,000
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	$6,713,475
Participant contributions at end of year	2010-12-31	$742,093
Participant contributions at beginning of year	2010-12-31	$531,437
Participant contributions at end of year	2010-12-31	$556
Participant contributions at beginning of year	2010-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2010-12-31	$673,063
Other income not declared elsewhere	2010-12-31	$51,049
Administrative expenses (other) incurred	2010-12-31	$54,861
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	$14,481,877
Value of net assets at end of year (total assets less liabilities)	2010-12-31	$55,055,211
Value of net assets at beginning of year (total assets less liabilities)	2010-12-31	$40,573,334
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
Value of interest in registered invesment companies (eg mutual funds) at end of year	2010-12-31	$10,830,054
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2010-12-31	$6,560,678
Value of interest in pooled separate accounts at end of year	2010-12-31	$24,241,764
Value of interest in pooled separate accounts at beginning of year	2010-12-31	$17,760,309
Interest on participant loans	2010-12-31	$27,468
Interest earned on other investments	2010-12-31	$173,022
Value of funds held in insurance company general accounts (unallocated contracts) at end of year	2010-12-31	$6,581,417
Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year	2010-12-31	$5,657,078
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2010-12-31	$716,508
Net investment gain/loss from pooled separate accounts	2010-12-31	$3,554,205
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	$11,934,717
Assets. Invements in employer securities at beginning of year	2010-12-31	$9,413,409
Contributions received in cash from employer	2010-12-31	$3,423,658
Employer contributions (assets) at end of year	2010-12-31	$724,610
Employer contributions (assets) at beginning of year	2010-12-31	$650,423
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2010-12-31	$2,242,637
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2010-12-31	No
Did the plan have assets held for investment	2010-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2010-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2010-12-31	No
Aggregate proceeds on sale of assets	2010-12-31	$2,150,560
Aggregate carrying amount (costs) on sale of assets	2010-12-31	$1,870,514
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2010-12-31	Yes
Opinion of an independent qualified public accountant for this plan	2010-12-31	Disclaimer
Accountancy firm name	2010-12-31	CARON & BLETZER, PLLC
Accountancy firm EIN	2010-12-31	043499945
2009 : CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2009 401k financial data
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2009-12-31	$76,721

Form 5500 Responses for CUBIST PHARMACEUTICALS INC. 401(K) PLAN

2015: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2015 form 5500 responses
2015-01-01	Type of plan entity	Single employer plan
2015-01-01	Submission has been amended	No
2015-01-01	This submission is the final filing	Yes
2015-01-01	This return/report is a short plan year return/report (less than 12 months)	Yes
2015-01-01	Plan is a collectively bargained plan	No
2015-01-01	Plan funding arrangement – Insurance	Yes
2015-01-01	Plan funding arrangement – Trust	Yes
2015-01-01	Plan benefit arrangement – Insurance	Yes
2015-01-01	Plan benefit arrangement - Trust	Yes
2014: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2014 form 5500 responses
2014-01-01	Type of plan entity	Single employer plan
2014-01-01	Submission has been amended	No
2014-01-01	This submission is the final filing	No
2014-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2014-01-01	Plan is a collectively bargained plan	No
2014-01-01	Plan funding arrangement – Insurance	Yes
2014-01-01	Plan funding arrangement – Trust	Yes
2014-01-01	Plan benefit arrangement – Insurance	Yes
2014-01-01	Plan benefit arrangement - Trust	Yes
2013: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2013 form 5500 responses
2013-01-01	Type of plan entity	Single employer plan
2013-01-01	Submission has been amended	No
2013-01-01	This submission is the final filing	No
2013-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2013-01-01	Plan is a collectively bargained plan	No
2013-01-01	Plan funding arrangement – Insurance	Yes
2013-01-01	Plan funding arrangement – Trust	Yes
2013-01-01	Plan benefit arrangement – Insurance	Yes
2013-01-01	Plan benefit arrangement - Trust	Yes
2012: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2012 form 5500 responses
2012-01-01	Type of plan entity	Single employer plan
2012-01-01	Submission has been amended	No
2012-01-01	This submission is the final filing	No
2012-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2012-01-01	Plan is a collectively bargained plan	No
2012-01-01	Plan funding arrangement – Insurance	Yes
2012-01-01	Plan funding arrangement – Trust	Yes
2012-01-01	Plan benefit arrangement – Insurance	Yes
2012-01-01	Plan benefit arrangement - Trust	Yes
2011: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2011 form 5500 responses
2011-01-01	Type of plan entity	Single employer plan
2011-01-01	Submission has been amended	No
2011-01-01	This submission is the final filing	No
2011-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2011-01-01	Plan is a collectively bargained plan	No
2011-01-01	Plan funding arrangement – Insurance	Yes
2011-01-01	Plan funding arrangement – Trust	Yes
2011-01-01	Plan benefit arrangement – Insurance	Yes
2011-01-01	Plan benefit arrangement - Trust	Yes
2010: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2010 form 5500 responses
2010-01-01	Type of plan entity	Single employer plan
2010-01-01	Submission has been amended	No
2010-01-01	This submission is the final filing	No
2010-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2010-01-01	Plan is a collectively bargained plan	No
2010-01-01	Plan funding arrangement – Insurance	Yes
2010-01-01	Plan funding arrangement – Trust	Yes
2010-01-01	Plan benefit arrangement – Insurance	Yes
2010-01-01	Plan benefit arrangement - Trust	Yes
2009: CUBIST PHARMACEUTICALS INC. 401(K) PLAN 2009 form 5500 responses
2009-01-01	Type of plan entity	Single employer plan
2009-01-01	Submission has been amended	No
2009-01-01	This submission is the final filing	No
2009-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2009-01-01	Plan is a collectively bargained plan	No
2009-01-01	Plan funding arrangement – Insurance	Yes
2009-01-01	Plan funding arrangement – Trust	Yes
2009-01-01	Plan benefit arrangement – Insurance	Yes
2009-01-01	Plan benefit arrangement - Trust	Yes

Insurance Providers Used on plan

PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY (National Association of Insurance Commissioners NAIC id number: 93629 )

Policy contract number

38661-001

Policy instance

Insurance contract or identification number	38661-001
Number of Individuals Covered	0
Insurance policy start date	2015-01-01
Insurance policy end date	2015-06-15
Are there contracts with allocated funds for individual policies?	No
Are there contracts with allocated funds for group deferred annuity?	No
Are there contracts with allocated funds for types other than group deferred annuity or individual?	No
Contract purchased, in whole or in part, to distribute benefits from a terminating plan	No
Contracts With Unallocated Funds Deposit Administration	0
Are there contracts with unallocated funds for contracts of type immediate participation guarantee?	No
Are there contracts with unallocated funds for contracts of type guaranteed investment?	No
Are there contracts with unallocated funds for contract types other than deposit administration, immediate participation guarantee or guaranteed investment?	Yes
Health Insurance Welfare Benefit	No
Dental Insurance Welfare Benefit	No
Vision Insurance Welfare Benefit	No
Life Insurance Welfare Benefit	No
Temporary Disability Insurance Welfare Benefit	No
Long Term Disability Insurance Welfare Benefit	No
Unemployment Insurance Welfare Benefit	No
Were dividends or retroactive rate refunds paid in cash?	No
Were dividends or retroactive rate refunds paid as a credit?	No
Did the insurance company fail to provide any information necessary to complete Schedule A of form 5500?	No

PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY (National Association of Insurance Commissioners NAIC id number: 93629 )

Policy contract number

38661-001

Policy instance

Insurance contract or identification number	38661-001
Number of Individuals Covered	1434
Insurance policy start date	2014-01-01
Insurance policy end date	2014-12-31
Total amount of commissions paid to insurance broker	USD $0
Total amount of fees paid to insurance company	USD $0
Are there contracts with allocated funds for individual policies?	No
Are there contracts with allocated funds for group deferred annuity?	No
Are there contracts with allocated funds for types other than group deferred annuity or individual?	No
Contract purchased, in whole or in part, to distribute benefits from a terminating plan	No
Contracts With Unallocated Funds Deposit Administration	0
Are there contracts with unallocated funds for contracts of type immediate participation guarantee?	No
Are there contracts with unallocated funds for contracts of type guaranteed investment?	No
Are there contracts with unallocated funds for contract types other than deposit administration, immediate participation guarantee or guaranteed investment?	Yes
Health Insurance Welfare Benefit	No
Dental Insurance Welfare Benefit	No
Vision Insurance Welfare Benefit	No
Life Insurance Welfare Benefit	No
Temporary Disability Insurance Welfare Benefit	No
Long Term Disability Insurance Welfare Benefit	No
Unemployment Insurance Welfare Benefit	No
Were dividends or retroactive rate refunds paid in cash?	No
Were dividends or retroactive rate refunds paid as a credit?	No
Did the insurance company fail to provide any information necessary to complete Schedule A of form 5500?	No

PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY (National Association of Insurance Commissioners NAIC id number: 93629 )

Policy contract number

38661-001

Policy instance

Insurance contract or identification number	38661-001
Number of Individuals Covered	1073
Insurance policy start date	2013-01-01
Insurance policy end date	2013-12-31
Total amount of commissions paid to insurance broker	USD $0
Total amount of fees paid to insurance company	USD $0
Are there contracts with allocated funds for individual policies?	No
Are there contracts with allocated funds for group deferred annuity?	No
Are there contracts with allocated funds for types other than group deferred annuity or individual?	No
Contract purchased, in whole or in part, to distribute benefits from a terminating plan	No
Contracts With Unallocated Funds Deposit Administration	0
Are there contracts with unallocated funds for contracts of type immediate participation guarantee?	No
Are there contracts with unallocated funds for contracts of type guaranteed investment?	No
Are there contracts with unallocated funds for contract types other than deposit administration, immediate participation guarantee or guaranteed investment?	Yes
Health Insurance Welfare Benefit	No
Dental Insurance Welfare Benefit	No
Vision Insurance Welfare Benefit	No
Life Insurance Welfare Benefit	No
Temporary Disability Insurance Welfare Benefit	No
Long Term Disability Insurance Welfare Benefit	No
Unemployment Insurance Welfare Benefit	No
Were dividends or retroactive rate refunds paid in cash?	No
Were dividends or retroactive rate refunds paid as a credit?	No
Did the insurance company fail to provide any information necessary to complete Schedule A of form 5500?	No

PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY (National Association of Insurance Commissioners NAIC id number: 93629 )

Policy contract number

38661-001

Policy instance

Insurance contract or identification number	38661-001
Number of Individuals Covered	897
Insurance policy start date	2012-01-01
Insurance policy end date	2012-12-31
Total amount of commissions paid to insurance broker	USD $0
Total amount of fees paid to insurance company	USD $0
Are there contracts with allocated funds for individual policies?	No
Are there contracts with allocated funds for group deferred annuity?	No
Are there contracts with allocated funds for types other than group deferred annuity or individual?	No
Contract purchased, in whole or in part, to distribute benefits from a terminating plan	No
Contracts With Unallocated Funds Deposit Administration	0
Are there contracts with unallocated funds for contracts of type immediate participation guarantee?	No
Are there contracts with unallocated funds for contracts of type guaranteed investment?	No
Are there contracts with unallocated funds for contract types other than deposit administration, immediate participation guarantee or guaranteed investment?	Yes
Health Insurance Welfare Benefit	No
Dental Insurance Welfare Benefit	No
Vision Insurance Welfare Benefit	No
Life Insurance Welfare Benefit	No
Temporary Disability Insurance Welfare Benefit	No
Long Term Disability Insurance Welfare Benefit	No
Unemployment Insurance Welfare Benefit	No
Were dividends or retroactive rate refunds paid in cash?	No
Were dividends or retroactive rate refunds paid as a credit?	No
Did the insurance company fail to provide any information necessary to complete Schedule A of form 5500?	No

PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY (National Association of Insurance Commissioners NAIC id number: 93629 )

Policy contract number

38661-001

Policy instance

Insurance contract or identification number	38661-001
Number of Individuals Covered	810
Insurance policy start date	2011-01-01
Insurance policy end date	2011-12-31
Total amount of commissions paid to insurance broker	USD $0
Total amount of fees paid to insurance company	USD $0
Are there contracts with allocated funds for individual policies?	No
Are there contracts with allocated funds for group deferred annuity?	No
Are there contracts with allocated funds for types other than group deferred annuity or individual?	No
Contract purchased, in whole or in part, to distribute benefits from a terminating plan	No
Contracts With Unallocated Funds Deposit Administration	0
Are there contracts with unallocated funds for contracts of type immediate participation guarantee?	No
Are there contracts with unallocated funds for contracts of type guaranteed investment?	No
Are there contracts with unallocated funds for contract types other than deposit administration, immediate participation guarantee or guaranteed investment?	Yes
Health Insurance Welfare Benefit	No
Dental Insurance Welfare Benefit	No
Vision Insurance Welfare Benefit	No
Life Insurance Welfare Benefit	No
Temporary Disability Insurance Welfare Benefit	No
Long Term Disability Insurance Welfare Benefit	No
Unemployment Insurance Welfare Benefit	No
Were dividends or retroactive rate refunds paid in cash?	No
Were dividends or retroactive rate refunds paid as a credit?	No
Did the insurance company fail to provide any information necessary to complete Schedule A of form 5500?	No

PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY (National Association of Insurance Commissioners NAIC id number: 93629 )

Policy contract number

38661-001

Policy instance

Insurance contract or identification number	38661-001
Number of Individuals Covered	768
Insurance policy start date	2010-01-01
Insurance policy end date	2010-12-31
Total amount of commissions paid to insurance broker	USD $0
Total amount of fees paid to insurance company	USD $0
Are there contracts with allocated funds for individual policies?	No
Are there contracts with allocated funds for group deferred annuity?	No
Are there contracts with allocated funds for types other than group deferred annuity or individual?	No
Contract purchased, in whole or in part, to distribute benefits from a terminating plan	No
Contracts With Unallocated Funds Deposit Administration	0
Are there contracts with unallocated funds for contracts of type immediate participation guarantee?	No
Are there contracts with unallocated funds for contracts of type guaranteed investment?	No
Are there contracts with unallocated funds for contract types other than deposit administration, immediate participation guarantee or guaranteed investment?	Yes
Health Insurance Welfare Benefit	No
Dental Insurance Welfare Benefit	No
Vision Insurance Welfare Benefit	No
Life Insurance Welfare Benefit	No
Temporary Disability Insurance Welfare Benefit	No
Long Term Disability Insurance Welfare Benefit	No
Unemployment Insurance Welfare Benefit	No
Were dividends or retroactive rate refunds paid in cash?	No
Were dividends or retroactive rate refunds paid as a credit?	No
Did the insurance company fail to provide any information necessary to complete Schedule A of form 5500?	No

Potentially related plans

CUBIST PHARMACEUTICALS, INC. 2014 SEVERANCE PLAN [EIN = 221261880]

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Company Name:	CUBIST PHARMACEUTICALS, INC.
Employer identification number (EIN):	223192085
NAIC Classification:	325410

Jurisdiction of Incorporation:	State of Delaware Division of Corporations
Incorporation Date:	1992-05-01
Company Identification Number:	2296420
Legal Registered Office Address:	Corporation Trust Center 1209 Orange St Wilmington United States of America (USA) 19801