MOMENTA PHARMACEUTICALS, INC. has sponsored the creation of one or more 401k plans.
Submission information for form 5500 for 401k plan MOMENTA PHARMACEUTICALS 401(K) PLAN
| Measure | Date | Value |
|---|
| 2021 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2021 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2021-11-12 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2021-11-12 | $0 |
| Total unrealized appreciation/depreciation of assets | 2021-11-12 | $0 |
| Total transfer of assets to this plan | 2021-11-12 | $0 |
| Total transfer of assets from this plan | 2021-11-12 | $35,347,357 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-11-12 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2021-11-12 | $0 |
| Expenses. Interest paid | 2021-11-12 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2021-11-12 | $0 |
| Total income from all sources (including contributions) | 2021-11-12 | $8,524,141 |
| Total loss/gain on sale of assets | 2021-11-12 | $0 |
| Total of all expenses incurred | 2021-11-12 | $23,694,970 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2021-11-12 | $23,690,667 |
| Expenses. Certain deemed distributions of participant loans | 2021-11-12 | $0 |
| Value of total corrective distributions | 2021-11-12 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2021-11-12 | $200,941 |
| Value of total assets at end of year | 2021-11-12 | $0 |
| Value of total assets at beginning of year | 2021-11-12 | $50,518,186 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2021-11-12 | $4,303 |
| Total income from rents | 2021-11-12 | $0 |
| Total interest from all sources | 2021-11-12 | $1,133 |
| Total dividends received (eg from common stock, registered investment company shares) | 2021-11-12 | $1,360,909 |
| Has a resolution to terminate the plan been adopted during the plan year or any prior plan year | 2021-11-12 | No |
| Total dividends received from registered investment company shares (eg mutual funds) | 2021-11-12 | $1,360,909 |
| Assets. Real estate other than employer real property at end of year | 2021-11-12 | $0 |
| Assets. Real estate other than employer real property at beginning of year | 2021-11-12 | $0 |
| Administrative expenses professional fees incurred | 2021-11-12 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2021-11-12 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2021-11-12 | $0 |
| Was this plan covered by a fidelity bond | 2021-11-12 | Yes |
| Value of fidelity bond cover | 2021-11-12 | $500,000 |
| If this is an individual account plan, was there a blackout period | 2021-11-12 | No |
| Were there any nonexempt tranactions with any party-in-interest | 2021-11-12 | No |
| Contributions received from participants | 2021-11-12 | $0 |
| Participant contributions at end of year | 2021-11-12 | $0 |
| Participant contributions at beginning of year | 2021-11-12 | $34,865 |
| Participant contributions at end of year | 2021-11-12 | $0 |
| Participant contributions at beginning of year | 2021-11-12 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2021-11-12 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2021-11-12 | $0 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2021-11-12 | $193,658 |
| Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries) | 2021-11-12 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2021-11-12 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2021-11-12 | $0 |
| Assets. Loans (other than to participants) at end of year | 2021-11-12 | $0 |
| Assets. Loans (other than to participants) at beginning of year | 2021-11-12 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2021-11-12 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2021-11-12 | $0 |
| Other income not declared elsewhere | 2021-11-12 | $0 |
| Administrative expenses (other) incurred | 2021-11-12 | $-657 |
| Liabilities. Value of operating payables at end of year | 2021-11-12 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2021-11-12 | $0 |
| Total non interest bearing cash at end of year | 2021-11-12 | $0 |
| Total non interest bearing cash at beginning of year | 2021-11-12 | $0 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2021-11-12 | No |
| Income. Non cash contributions | 2021-11-12 | $0 |
| Value of net income/loss | 2021-11-12 | $-15,170,829 |
| Value of net assets at end of year (total assets less liabilities) | 2021-11-12 | $0 |
| Value of net assets at beginning of year (total assets less liabilities) | 2021-11-12 | $50,518,186 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2021-11-12 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2021-11-12 | No |
| Were any leases to which the plan was party in default or uncollectible | 2021-11-12 | No |
| Assets. partnership/joint venture interests at end of year | 2021-11-12 | $0 |
| Assets. partnership/joint venture interests at beginning of year | 2021-11-12 | $0 |
| Investment advisory and management fees | 2021-11-12 | $4,960 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2021-11-12 | $0 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2021-11-12 | $49,333,382 |
| Value of interest in pooled separate accounts at end of year | 2021-11-12 | $0 |
| Value of interest in pooled separate accounts at beginning of year | 2021-11-12 | $0 |
| Interest on participant loans | 2021-11-12 | $1,029 |
| Income. Interest from loans (other than to participants) | 2021-11-12 | $0 |
| Interest earned on other investments | 2021-11-12 | $0 |
| Income. Interest from US Government securities | 2021-11-12 | $0 |
| Income. Interest from corporate debt instruments | 2021-11-12 | $0 |
| Value of interest in master investment trust accounts at end of year | 2021-11-12 | $0 |
| Value of interest in master investment trust accounts at beginning of year | 2021-11-12 | $0 |
| Value of interest in common/collective trusts at end of year | 2021-11-12 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2021-11-12 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2021-11-12 | $0 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2021-11-12 | $1,149,939 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2021-11-12 | $1,149,939 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2021-11-12 | $104 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2021-11-12 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2021-11-12 | $0 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2021-11-12 | $0 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2021-11-12 | $0 |
| Expenses. Payments to insurance carriers foe the provision of benefits | 2021-11-12 | $0 |
| Asset value of US Government securities at end of year | 2021-11-12 | $0 |
| Asset value of US Government securities at beginning of year | 2021-11-12 | $0 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2021-11-12 | $6,961,158 |
| Net investment gain/loss from pooled separate accounts | 2021-11-12 | $0 |
| Net investment gain or loss from common/collective trusts | 2021-11-12 | $0 |
| Net gain/loss from 103.12 investment entities | 2021-11-12 | $0 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2021-11-12 | No |
| Was there a failure to transmit to the plan any participant contributions | 2021-11-12 | No |
| Has the plan failed to provide any benefit when due under the plan | 2021-11-12 | No |
| Assets. Invements in employer securities at end of year | 2021-11-12 | $0 |
| Assets. Invements in employer securities at beginning of year | 2021-11-12 | $0 |
| Assets. Value of employer real property at end of year | 2021-11-12 | $0 |
| Assets. Value of employer real property at beginning of year | 2021-11-12 | $0 |
| Contributions received in cash from employer | 2021-11-12 | $7,283 |
| Employer contributions (assets) at end of year | 2021-11-12 | $0 |
| Employer contributions (assets) at beginning of year | 2021-11-12 | $0 |
| Income. Dividends from preferred stock | 2021-11-12 | $0 |
| Income. Dividends from common stock | 2021-11-12 | $0 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2021-11-12 | $23,690,667 |
| Asset. Corporate debt instrument preferred debt at end of year | 2021-11-12 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2021-11-12 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2021-11-12 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2021-11-12 | $0 |
| Contract administrator fees | 2021-11-12 | $0 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2021-11-12 | No |
| Assets. Corporate common stocks other than exployer securities at end of year | 2021-11-12 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2021-11-12 | $0 |
| Liabilities. Value of benefit claims payable at end of year | 2021-11-12 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2021-11-12 | $0 |
| Assets. Value of buildings and other operty used in plan operation at end of year | 2021-11-12 | $0 |
| Assets. Value of buildings and other operty used in plan operation at beginning of year | 2021-11-12 | $0 |
| Did the plan have assets held for investment | 2021-11-12 | 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 | 2021-11-12 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2021-11-12 | Yes |
| Aggregate proceeds on sale of assets | 2021-11-12 | $0 |
| Aggregate carrying amount (costs) on sale of assets | 2021-11-12 | $0 |
| Liabilities. Value of acquisition indebtedness at end of year | 2021-11-12 | $0 |
| Liabilities. Value of acquisition indebtedness at beginning of year | 2021-11-12 | $0 |
| Opinion of an independent qualified public accountant for this plan | 2021-11-12 | Unqualified |
| Accountancy firm name | 2021-11-12 | RSM US LLP |
| Accountancy firm EIN | 2021-11-12 | 420714325 |
| 2020 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2020 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2020-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2020-12-31 | $0 |
| Total unrealized appreciation/depreciation of assets | 2020-12-31 | $0 |
| Total transfer of assets to this plan | 2020-12-31 | $0 |
| Total transfer of assets from this plan | 2020-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2020-12-31 | $0 |
| Expenses. Interest paid | 2020-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2020-12-31 | $0 |
| Total income from all sources (including contributions) | 2020-12-31 | $11,818,927 |
| Total loss/gain on sale of assets | 2020-12-31 | $0 |
| Total of all expenses incurred | 2020-12-31 | $3,663,774 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2020-12-31 | $3,660,563 |
| Expenses. Certain deemed distributions of participant loans | 2020-12-31 | $0 |
| Value of total corrective distributions | 2020-12-31 | $3,475 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2020-12-31 | $3,123,880 |
| Value of total assets at end of year | 2020-12-31 | $50,518,186 |
| Value of total assets at beginning of year | 2020-12-31 | $42,363,033 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2020-12-31 | $-264 |
| Total income from rents | 2020-12-31 | $0 |
| Total interest from all sources | 2020-12-31 | $6,611 |
| Total dividends received (eg from common stock, registered investment company shares) | 2020-12-31 | $1,931,879 |
| 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 | $1,931,879 |
| Assets. Real estate other than employer real property at end of year | 2020-12-31 | $0 |
| Assets. Real estate other than employer real property at beginning of year | 2020-12-31 | $0 |
| Administrative expenses professional fees incurred | 2020-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2020-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2020-12-31 | $0 |
| Was this plan covered by a fidelity bond | 2020-12-31 | Yes |
| Value of fidelity bond cover | 2020-12-31 | $500,000 |
| If this is an individual account plan, was there a blackout period | 2020-12-31 | No |
| Were there any nonexempt tranactions with any party-in-interest | 2020-12-31 | No |
| Contributions received from participants | 2020-12-31 | $2,179,073 |
| Participant contributions at end of year | 2020-12-31 | $34,865 |
| Participant contributions at beginning of year | 2020-12-31 | $117,853 |
| Participant contributions at end of year | 2020-12-31 | $0 |
| Participant contributions at beginning of year | 2020-12-31 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2020-12-31 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2020-12-31 | $0 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2020-12-31 | $246,094 |
| Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries) | 2020-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2020-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2020-12-31 | $0 |
| Assets. Loans (other than to participants) at end of year | 2020-12-31 | $0 |
| Assets. Loans (other than to participants) at beginning of year | 2020-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2020-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2020-12-31 | $0 |
| Other income not declared elsewhere | 2020-12-31 | $0 |
| Administrative expenses (other) incurred | 2020-12-31 | $-4,633 |
| Liabilities. Value of operating payables at end of year | 2020-12-31 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2020-12-31 | $0 |
| Total non interest bearing cash at end of year | 2020-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2020-12-31 | $0 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2020-12-31 | No |
| Income. Non cash contributions | 2020-12-31 | $0 |
| Value of net income/loss | 2020-12-31 | $8,155,153 |
| Value of net assets at end of year (total assets less liabilities) | 2020-12-31 | $50,518,186 |
| Value of net assets at beginning of year (total assets less liabilities) | 2020-12-31 | $42,363,033 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2020-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2020-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2020-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2020-12-31 | $0 |
| Assets. partnership/joint venture interests at beginning of year | 2020-12-31 | $0 |
| Investment advisory and management fees | 2020-12-31 | $4,369 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2020-12-31 | $49,333,382 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2020-12-31 | $41,230,998 |
| Value of interest in pooled separate accounts at end of year | 2020-12-31 | $0 |
| Value of interest in pooled separate accounts at beginning of year | 2020-12-31 | $0 |
| Interest on participant loans | 2020-12-31 | $3,628 |
| Income. Interest from loans (other than to participants) | 2020-12-31 | $0 |
| Interest earned on other investments | 2020-12-31 | $0 |
| Income. Interest from US Government securities | 2020-12-31 | $0 |
| Income. Interest from corporate debt instruments | 2020-12-31 | $0 |
| Value of interest in master investment trust accounts at end of year | 2020-12-31 | $0 |
| Value of interest in master investment trust accounts at beginning of year | 2020-12-31 | $0 |
| Value of interest in common/collective trusts at end of year | 2020-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2020-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2020-12-31 | $1,149,939 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2020-12-31 | $1,014,182 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2020-12-31 | $1,014,182 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2020-12-31 | $2,983 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2020-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2020-12-31 | $0 |
| Value of funds held in insurance company general accounts (unallocated contracts) at end of year | 2020-12-31 | $0 |
| Value of funds held in insurance company general accounts (unallocated contracts) at beginning of year | 2020-12-31 | $0 |
| Expenses. Payments to insurance carriers foe the provision of benefits | 2020-12-31 | $0 |
| Asset value of US Government securities at end of year | 2020-12-31 | $0 |
| Asset value of US Government securities at beginning of year | 2020-12-31 | $0 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2020-12-31 | $6,756,557 |
| Net investment gain/loss from pooled separate accounts | 2020-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2020-12-31 | $0 |
| Net gain/loss from 103.12 investment entities | 2020-12-31 | $0 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2020-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2020-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2020-12-31 | No |
| Assets. Invements in employer securities at end of year | 2020-12-31 | $0 |
| Assets. Invements in employer securities at beginning of year | 2020-12-31 | $0 |
| Assets. Value of employer real property at end of year | 2020-12-31 | $0 |
| Assets. Value of employer real property at beginning of year | 2020-12-31 | $0 |
| Contributions received in cash from employer | 2020-12-31 | $698,713 |
| Employer contributions (assets) at end of year | 2020-12-31 | $0 |
| Employer contributions (assets) at beginning of year | 2020-12-31 | $0 |
| Income. Dividends from preferred stock | 2020-12-31 | $0 |
| Income. Dividends from common stock | 2020-12-31 | $0 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2020-12-31 | $3,660,563 |
| Asset. Corporate debt instrument preferred debt at end of year | 2020-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2020-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2020-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2020-12-31 | $0 |
| Contract administrator fees | 2020-12-31 | $0 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2020-12-31 | No |
| Assets. Corporate common stocks other than exployer securities at end of year | 2020-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2020-12-31 | $0 |
| Liabilities. Value of benefit claims payable at end of year | 2020-12-31 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2020-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at end of year | 2020-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at beginning of year | 2020-12-31 | $0 |
| Did the plan have assets held for investment | 2020-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2020-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2020-12-31 | No |
| Aggregate proceeds on sale of assets | 2020-12-31 | $0 |
| Aggregate carrying amount (costs) on sale of assets | 2020-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at end of year | 2020-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at beginning of year | 2020-12-31 | $0 |
| Opinion of an independent qualified public accountant for this plan | 2020-12-31 | Disclaimer |
| Accountancy firm name | 2020-12-31 | RSM US LLP |
| Accountancy firm EIN | 2020-12-31 | 420714325 |
| 2019 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2019 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2019-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2019-12-31 | $0 |
| Total unrealized appreciation/depreciation of assets | 2019-12-31 | $0 |
| Total transfer of assets to this plan | 2019-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2019-12-31 | $0 |
| Expenses. Interest paid | 2019-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2019-12-31 | $0 |
| Total income from all sources (including contributions) | 2019-12-31 | $12,043,923 |
| Total loss/gain on sale of assets | 2019-12-31 | $0 |
| Total of all expenses incurred | 2019-12-31 | $9,351,256 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2019-12-31 | $9,345,408 |
| Expenses. Certain deemed distributions of participant loans | 2019-12-31 | $0 |
| Value of total corrective distributions | 2019-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2019-12-31 | $2,626,400 |
| Value of total assets at end of year | 2019-12-31 | $42,363,033 |
| Value of total assets at beginning of year | 2019-12-31 | $39,670,366 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2019-12-31 | $5,848 |
| Total income from rents | 2019-12-31 | $0 |
| Total interest from all sources | 2019-12-31 | $29,749 |
| Total dividends received (eg from common stock, registered investment company shares) | 2019-12-31 | $1,752,187 |
| 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 | $1,752,187 |
| Assets. Real estate other than employer real property at end of year | 2019-12-31 | $0 |
| Assets. Real estate other than employer real property at beginning of year | 2019-12-31 | $0 |
| Administrative expenses professional fees incurred | 2019-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2019-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2019-12-31 | $0 |
| Was this plan covered by a fidelity bond | 2019-12-31 | Yes |
| Value of fidelity bond cover | 2019-12-31 | $500,000 |
| If this is an individual account plan, was there a blackout period | 2019-12-31 | No |
| Were there any nonexempt tranactions with any party-in-interest | 2019-12-31 | No |
| Contributions received from participants | 2019-12-31 | $1,806,407 |
| Participant contributions at end of year | 2019-12-31 | $117,853 |
| Participant contributions at beginning of year | 2019-12-31 | $246,920 |
| Participant contributions at end of year | 2019-12-31 | $0 |
| Participant contributions at beginning of year | 2019-12-31 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2019-12-31 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2019-12-31 | $0 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2019-12-31 | $217,517 |
| Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries) | 2019-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2019-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2019-12-31 | $0 |
| Assets. Loans (other than to participants) at end of year | 2019-12-31 | $0 |
| Assets. Loans (other than to participants) at beginning of year | 2019-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2019-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2019-12-31 | $0 |
| Other income not declared elsewhere | 2019-12-31 | $0 |
| Administrative expenses (other) incurred | 2019-12-31 | $-343 |
| Liabilities. Value of operating payables at end of year | 2019-12-31 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2019-12-31 | $0 |
| Total non interest bearing cash at end of year | 2019-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2019-12-31 | $0 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2019-12-31 | No |
| Income. Non cash contributions | 2019-12-31 | $0 |
| Value of net income/loss | 2019-12-31 | $2,692,667 |
| Value of net assets at end of year (total assets less liabilities) | 2019-12-31 | $42,363,033 |
| Value of net assets at beginning of year (total assets less liabilities) | 2019-12-31 | $39,670,366 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2019-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2019-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2019-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2019-12-31 | $0 |
| Assets. partnership/joint venture interests at beginning of year | 2019-12-31 | $0 |
| Investment advisory and management fees | 2019-12-31 | $6,191 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2019-12-31 | $41,230,998 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2019-12-31 | $38,223,205 |
| Value of interest in pooled separate accounts at end of year | 2019-12-31 | $0 |
| Value of interest in pooled separate accounts at beginning of year | 2019-12-31 | $0 |
| Interest on participant loans | 2019-12-31 | $6,107 |
| Income. Interest from loans (other than to participants) | 2019-12-31 | $0 |
| Interest earned on other investments | 2019-12-31 | $0 |
| Income. Interest from US Government securities | 2019-12-31 | $0 |
| Income. Interest from corporate debt instruments | 2019-12-31 | $0 |
| Value of interest in master investment trust accounts at end of year | 2019-12-31 | $0 |
| Value of interest in master investment trust accounts at beginning of year | 2019-12-31 | $0 |
| Value of interest in common/collective trusts at end of year | 2019-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2019-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2019-12-31 | $1,014,182 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2019-12-31 | $1,200,241 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2019-12-31 | $1,200,241 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2019-12-31 | $23,642 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2019-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2019-12-31 | $0 |
| Expenses. Payments to insurance carriers foe the provision of benefits | 2019-12-31 | $0 |
| Asset value of US Government securities at end of year | 2019-12-31 | $0 |
| Asset value of US Government securities at beginning of year | 2019-12-31 | $0 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2019-12-31 | $7,635,587 |
| Net investment gain/loss from pooled separate accounts | 2019-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2019-12-31 | $0 |
| Net gain/loss from 103.12 investment entities | 2019-12-31 | $0 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2019-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2019-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2019-12-31 | No |
| Assets. Invements in employer securities at end of year | 2019-12-31 | $0 |
| Assets. Invements in employer securities at beginning of year | 2019-12-31 | $0 |
| Assets. Value of employer real property at end of year | 2019-12-31 | $0 |
| Assets. Value of employer real property at beginning of year | 2019-12-31 | $0 |
| Contributions received in cash from employer | 2019-12-31 | $602,476 |
| Employer contributions (assets) at end of year | 2019-12-31 | $0 |
| Employer contributions (assets) at beginning of year | 2019-12-31 | $0 |
| Income. Dividends from preferred stock | 2019-12-31 | $0 |
| Income. Dividends from common stock | 2019-12-31 | $0 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2019-12-31 | $9,345,408 |
| Asset. Corporate debt instrument preferred debt at end of year | 2019-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2019-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2019-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2019-12-31 | $0 |
| Contract administrator fees | 2019-12-31 | $0 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2019-12-31 | No |
| Assets. Corporate common stocks other than exployer securities at end of year | 2019-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2019-12-31 | $0 |
| Liabilities. Value of benefit claims payable at end of year | 2019-12-31 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2019-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at end of year | 2019-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at beginning of year | 2019-12-31 | $0 |
| Did the plan have assets held for investment | 2019-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2019-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2019-12-31 | No |
| Aggregate proceeds on sale of assets | 2019-12-31 | $0 |
| Aggregate carrying amount (costs) on sale of assets | 2019-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at end of year | 2019-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at beginning of year | 2019-12-31 | $0 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2019-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2019-12-31 | Disclaimer |
| Accountancy firm name | 2019-12-31 | RSM US LLP |
| Accountancy firm EIN | 2019-12-31 | 420714325 |
| 2018 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2018 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2018-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2018-12-31 | $0 |
| Total unrealized appreciation/depreciation of assets | 2018-12-31 | $0 |
| Total transfer of assets to this plan | 2018-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2018-12-31 | $0 |
| Expenses. Interest paid | 2018-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2018-12-31 | $0 |
| Total income from all sources (including contributions) | 2018-12-31 | $1,662,069 |
| Total loss/gain on sale of assets | 2018-12-31 | $0 |
| Total of all expenses incurred | 2018-12-31 | $6,245,580 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2018-12-31 | $6,230,172 |
| Expenses. Certain deemed distributions of participant loans | 2018-12-31 | $0 |
| Value of total corrective distributions | 2018-12-31 | $5,042 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2018-12-31 | $4,798,902 |
| Value of total assets at end of year | 2018-12-31 | $39,670,366 |
| Value of total assets at beginning of year | 2018-12-31 | $44,253,877 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2018-12-31 | $10,366 |
| Total income from rents | 2018-12-31 | $0 |
| Total interest from all sources | 2018-12-31 | $22,954 |
| Total dividends received (eg from common stock, registered investment company shares) | 2018-12-31 | $2,830,744 |
| 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 | $2,830,744 |
| Assets. Real estate other than employer real property at end of year | 2018-12-31 | $0 |
| Assets. Real estate other than employer real property at beginning of year | 2018-12-31 | $0 |
| Administrative expenses professional fees incurred | 2018-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2018-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2018-12-31 | $0 |
| Was this plan covered by a fidelity bond | 2018-12-31 | Yes |
| Value of fidelity bond cover | 2018-12-31 | $500,000 |
| If this is an individual account plan, was there a blackout period | 2018-12-31 | No |
| Were there any nonexempt tranactions with any party-in-interest | 2018-12-31 | No |
| Contributions received from participants | 2018-12-31 | $3,239,171 |
| Participant contributions at end of year | 2018-12-31 | $246,920 |
| Participant contributions at beginning of year | 2018-12-31 | $231,703 |
| Participant contributions at end of year | 2018-12-31 | $0 |
| Participant contributions at beginning of year | 2018-12-31 | $89,062 |
| Assets. Other investments not covered elsewhere at end of year | 2018-12-31 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2018-12-31 | $0 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2018-12-31 | $682,507 |
| Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries) | 2018-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2018-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2018-12-31 | $0 |
| Assets. Loans (other than to participants) at end of year | 2018-12-31 | $0 |
| Assets. Loans (other than to participants) at beginning of year | 2018-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2018-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2018-12-31 | $0 |
| Other income not declared elsewhere | 2018-12-31 | $0 |
| Administrative expenses (other) incurred | 2018-12-31 | $2,100 |
| Liabilities. Value of operating payables at end of year | 2018-12-31 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2018-12-31 | $0 |
| Total non interest bearing cash at end of year | 2018-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2018-12-31 | $0 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2018-12-31 | No |
| Income. Non cash contributions | 2018-12-31 | $0 |
| Value of net income/loss | 2018-12-31 | $-4,583,511 |
| Value of net assets at end of year (total assets less liabilities) | 2018-12-31 | $39,670,366 |
| Value of net assets at beginning of year (total assets less liabilities) | 2018-12-31 | $44,253,877 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2018-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2018-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2018-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2018-12-31 | $0 |
| Assets. partnership/joint venture interests at beginning of year | 2018-12-31 | $0 |
| Investment advisory and management fees | 2018-12-31 | $8,266 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2018-12-31 | $38,223,205 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2018-12-31 | $42,920,273 |
| Value of interest in pooled separate accounts at end of year | 2018-12-31 | $0 |
| Value of interest in pooled separate accounts at beginning of year | 2018-12-31 | $0 |
| Interest on participant loans | 2018-12-31 | $9,291 |
| Income. Interest from loans (other than to participants) | 2018-12-31 | $0 |
| Interest earned on other investments | 2018-12-31 | $0 |
| Income. Interest from US Government securities | 2018-12-31 | $0 |
| Income. Interest from corporate debt instruments | 2018-12-31 | $0 |
| Value of interest in master investment trust accounts at end of year | 2018-12-31 | $0 |
| Value of interest in master investment trust accounts at beginning of year | 2018-12-31 | $0 |
| Value of interest in common/collective trusts at end of year | 2018-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2018-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2018-12-31 | $1,200,241 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2018-12-31 | $902,091 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2018-12-31 | $902,091 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2018-12-31 | $13,663 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2018-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2018-12-31 | $0 |
| Expenses. Payments to insurance carriers foe the provision of benefits | 2018-12-31 | $0 |
| Asset value of US Government securities at end of year | 2018-12-31 | $0 |
| Asset value of US Government securities at beginning of year | 2018-12-31 | $0 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2018-12-31 | $-5,990,531 |
| Net investment gain/loss from pooled separate accounts | 2018-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2018-12-31 | $0 |
| Net gain/loss from 103.12 investment entities | 2018-12-31 | $0 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2018-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2018-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2018-12-31 | No |
| Assets. Invements in employer securities at end of year | 2018-12-31 | $0 |
| Assets. Invements in employer securities at beginning of year | 2018-12-31 | $0 |
| Assets. Value of employer real property at end of year | 2018-12-31 | $0 |
| Assets. Value of employer real property at beginning of year | 2018-12-31 | $0 |
| Contributions received in cash from employer | 2018-12-31 | $877,224 |
| Employer contributions (assets) at end of year | 2018-12-31 | $0 |
| Employer contributions (assets) at beginning of year | 2018-12-31 | $110,748 |
| Income. Dividends from preferred stock | 2018-12-31 | $0 |
| Income. Dividends from common stock | 2018-12-31 | $0 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2018-12-31 | $6,230,172 |
| Asset. Corporate debt instrument preferred debt at end of year | 2018-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2018-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2018-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2018-12-31 | $0 |
| Contract administrator fees | 2018-12-31 | $0 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2018-12-31 | No |
| Assets. Corporate common stocks other than exployer securities at end of year | 2018-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2018-12-31 | $0 |
| Liabilities. Value of benefit claims payable at end of year | 2018-12-31 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2018-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at end of year | 2018-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at beginning of year | 2018-12-31 | $0 |
| Did the plan have assets held for investment | 2018-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2018-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2018-12-31 | No |
| Aggregate proceeds on sale of assets | 2018-12-31 | $0 |
| Aggregate carrying amount (costs) on sale of assets | 2018-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at end of year | 2018-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at beginning of year | 2018-12-31 | $0 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2018-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2018-12-31 | Disclaimer |
| Accountancy firm name | 2018-12-31 | RSM US LLP |
| Accountancy firm EIN | 2018-12-31 | 420714325 |
| 2017 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2017 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2017-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2017-12-31 | $0 |
| Total unrealized appreciation/depreciation of assets | 2017-12-31 | $0 |
| Total transfer of assets to this plan | 2017-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2017-12-31 | $0 |
| Expenses. Interest paid | 2017-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2017-12-31 | $0 |
| Total income from all sources (including contributions) | 2017-12-31 | $12,654,656 |
| Total loss/gain on sale of assets | 2017-12-31 | $0 |
| Total of all expenses incurred | 2017-12-31 | $2,815,991 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2017-12-31 | $2,792,179 |
| Expenses. Certain deemed distributions of participant loans | 2017-12-31 | $0 |
| Value of total corrective distributions | 2017-12-31 | $15,244 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2017-12-31 | $5,392,477 |
| Value of total assets at end of year | 2017-12-31 | $44,253,877 |
| Value of total assets at beginning of year | 2017-12-31 | $34,415,212 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2017-12-31 | $8,568 |
| Total income from rents | 2017-12-31 | $0 |
| Total interest from all sources | 2017-12-31 | $16,071 |
| Total dividends received (eg from common stock, registered investment company shares) | 2017-12-31 | $1,932,669 |
| 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 | $1,932,669 |
| Assets. Real estate other than employer real property at end of year | 2017-12-31 | $0 |
| Assets. Real estate other than employer real property at beginning of year | 2017-12-31 | $0 |
| Administrative expenses professional fees incurred | 2017-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2017-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2017-12-31 | $0 |
| Was this plan covered by a fidelity bond | 2017-12-31 | Yes |
| Value of fidelity bond cover | 2017-12-31 | $500,000 |
| If this is an individual account plan, was there a blackout period | 2017-12-31 | No |
| Were there any nonexempt tranactions with any party-in-interest | 2017-12-31 | No |
| Contributions received from participants | 2017-12-31 | $3,502,021 |
| Participant contributions at end of year | 2017-12-31 | $231,703 |
| Participant contributions at beginning of year | 2017-12-31 | $388,596 |
| Participant contributions at end of year | 2017-12-31 | $89,062 |
| Participant contributions at beginning of year | 2017-12-31 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2017-12-31 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2017-12-31 | $0 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2017-12-31 | $738,859 |
| Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries) | 2017-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2017-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2017-12-31 | $0 |
| Assets. Loans (other than to participants) at end of year | 2017-12-31 | $0 |
| Assets. Loans (other than to participants) at beginning of year | 2017-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2017-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2017-12-31 | $0 |
| Other income not declared elsewhere | 2017-12-31 | $0 |
| Administrative expenses (other) incurred | 2017-12-31 | $1,500 |
| Liabilities. Value of operating payables at end of year | 2017-12-31 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2017-12-31 | $0 |
| Total non interest bearing cash at end of year | 2017-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2017-12-31 | $0 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2017-12-31 | No |
| Income. Non cash contributions | 2017-12-31 | $0 |
| Value of net income/loss | 2017-12-31 | $9,838,665 |
| Value of net assets at end of year (total assets less liabilities) | 2017-12-31 | $44,253,877 |
| Value of net assets at beginning of year (total assets less liabilities) | 2017-12-31 | $34,415,212 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2017-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2017-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2017-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2017-12-31 | $0 |
| Assets. partnership/joint venture interests at beginning of year | 2017-12-31 | $0 |
| Investment advisory and management fees | 2017-12-31 | $7,068 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2017-12-31 | $42,920,273 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2017-12-31 | $32,706,223 |
| Value of interest in pooled separate accounts at end of year | 2017-12-31 | $0 |
| Value of interest in pooled separate accounts at beginning of year | 2017-12-31 | $0 |
| Interest on participant loans | 2017-12-31 | $10,510 |
| Income. Interest from loans (other than to participants) | 2017-12-31 | $0 |
| Interest earned on other investments | 2017-12-31 | $0 |
| Income. Interest from US Government securities | 2017-12-31 | $0 |
| Income. Interest from corporate debt instruments | 2017-12-31 | $0 |
| Value of interest in master investment trust accounts at end of year | 2017-12-31 | $0 |
| Value of interest in master investment trust accounts at beginning of year | 2017-12-31 | $0 |
| Value of interest in common/collective trusts at end of year | 2017-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2017-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2017-12-31 | $902,091 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2017-12-31 | $1,320,393 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2017-12-31 | $1,320,393 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2017-12-31 | $5,561 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2017-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2017-12-31 | $0 |
| Expenses. Payments to insurance carriers foe the provision of benefits | 2017-12-31 | $0 |
| Asset value of US Government securities at end of year | 2017-12-31 | $0 |
| Asset value of US Government securities at beginning of year | 2017-12-31 | $0 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2017-12-31 | $5,313,439 |
| Net investment gain/loss from pooled separate accounts | 2017-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2017-12-31 | $0 |
| Net gain/loss from 103.12 investment entities | 2017-12-31 | $0 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2017-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2017-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2017-12-31 | No |
| Assets. Invements in employer securities at end of year | 2017-12-31 | $0 |
| Assets. Invements in employer securities at beginning of year | 2017-12-31 | $0 |
| Assets. Value of employer real property at end of year | 2017-12-31 | $0 |
| Assets. Value of employer real property at beginning of year | 2017-12-31 | $0 |
| Contributions received in cash from employer | 2017-12-31 | $1,151,597 |
| Employer contributions (assets) at end of year | 2017-12-31 | $110,748 |
| Employer contributions (assets) at beginning of year | 2017-12-31 | $0 |
| Income. Dividends from preferred stock | 2017-12-31 | $0 |
| Income. Dividends from common stock | 2017-12-31 | $0 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2017-12-31 | $2,792,179 |
| Asset. Corporate debt instrument preferred debt at end of year | 2017-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2017-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2017-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2017-12-31 | $0 |
| Contract administrator fees | 2017-12-31 | $0 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2017-12-31 | No |
| Assets. Corporate common stocks other than exployer securities at end of year | 2017-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2017-12-31 | $0 |
| Liabilities. Value of benefit claims payable at end of year | 2017-12-31 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2017-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at end of year | 2017-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at beginning of year | 2017-12-31 | $0 |
| Did the plan have assets held for investment | 2017-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2017-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2017-12-31 | No |
| Aggregate proceeds on sale of assets | 2017-12-31 | $0 |
| Aggregate carrying amount (costs) on sale of assets | 2017-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at end of year | 2017-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at beginning of year | 2017-12-31 | $0 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2017-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2017-12-31 | Disclaimer |
| Accountancy firm name | 2017-12-31 | RSM US LLP |
| Accountancy firm EIN | 2017-12-31 | 420714325 |
| 2016 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2016 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2016-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2016-12-31 | $0 |
| Total unrealized appreciation/depreciation of assets | 2016-12-31 | $0 |
| Total transfer of assets to this plan | 2016-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2016-12-31 | $0 |
| Expenses. Interest paid | 2016-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2016-12-31 | $0 |
| Total income from all sources (including contributions) | 2016-12-31 | $7,623,008 |
| Total loss/gain on sale of assets | 2016-12-31 | $0 |
| Total of all expenses incurred | 2016-12-31 | $2,955,146 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2016-12-31 | $2,943,714 |
| Expenses. Certain deemed distributions of participant loans | 2016-12-31 | $0 |
| Value of total corrective distributions | 2016-12-31 | $3,643 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2016-12-31 | $5,274,722 |
| Value of total assets at end of year | 2016-12-31 | $34,415,212 |
| Value of total assets at beginning of year | 2016-12-31 | $29,747,350 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2016-12-31 | $7,789 |
| Total income from rents | 2016-12-31 | $0 |
| Total interest from all sources | 2016-12-31 | $13,461 |
| Total dividends received (eg from common stock, registered investment company shares) | 2016-12-31 | $1,195,582 |
| 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 | $1,195,582 |
| Assets. Real estate other than employer real property at end of year | 2016-12-31 | $0 |
| Assets. Real estate other than employer real property at beginning of year | 2016-12-31 | $0 |
| Administrative expenses professional fees incurred | 2016-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2016-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2016-12-31 | $0 |
| Was this plan covered by a fidelity bond | 2016-12-31 | Yes |
| Value of fidelity bond cover | 2016-12-31 | $500,000 |
| If this is an individual account plan, was there a blackout period | 2016-12-31 | No |
| Were there any nonexempt tranactions with any party-in-interest | 2016-12-31 | No |
| Contributions received from participants | 2016-12-31 | $3,165,571 |
| Participant contributions at end of year | 2016-12-31 | $388,596 |
| Participant contributions at beginning of year | 2016-12-31 | $314,277 |
| Participant contributions at end of year | 2016-12-31 | $0 |
| Participant contributions at beginning of year | 2016-12-31 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2016-12-31 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2016-12-31 | $0 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2016-12-31 | $1,139,105 |
| Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries) | 2016-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2016-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2016-12-31 | $0 |
| Assets. Loans (other than to participants) at end of year | 2016-12-31 | $0 |
| Assets. Loans (other than to participants) at beginning of year | 2016-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2016-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2016-12-31 | $0 |
| Other income not declared elsewhere | 2016-12-31 | $0 |
| Administrative expenses (other) incurred | 2016-12-31 | $2,356 |
| Liabilities. Value of operating payables at end of year | 2016-12-31 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2016-12-31 | $0 |
| Total non interest bearing cash at end of year | 2016-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2016-12-31 | $0 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2016-12-31 | No |
| Income. Non cash contributions | 2016-12-31 | $0 |
| Value of net income/loss | 2016-12-31 | $4,667,862 |
| Value of net assets at end of year (total assets less liabilities) | 2016-12-31 | $34,415,212 |
| Value of net assets at beginning of year (total assets less liabilities) | 2016-12-31 | $29,747,350 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2016-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2016-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2016-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2016-12-31 | $0 |
| Assets. partnership/joint venture interests at beginning of year | 2016-12-31 | $0 |
| Investment advisory and management fees | 2016-12-31 | $5,433 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2016-12-31 | $32,706,223 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2016-12-31 | $28,270,322 |
| Value of interest in pooled separate accounts at end of year | 2016-12-31 | $0 |
| Value of interest in pooled separate accounts at beginning of year | 2016-12-31 | $0 |
| Interest on participant loans | 2016-12-31 | $12,842 |
| Income. Interest from loans (other than to participants) | 2016-12-31 | $0 |
| Interest earned on other investments | 2016-12-31 | $0 |
| Income. Interest from US Government securities | 2016-12-31 | $0 |
| Income. Interest from corporate debt instruments | 2016-12-31 | $0 |
| Value of interest in master investment trust accounts at end of year | 2016-12-31 | $0 |
| Value of interest in master investment trust accounts at beginning of year | 2016-12-31 | $0 |
| Value of interest in common/collective trusts at end of year | 2016-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2016-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2016-12-31 | $1,320,393 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2016-12-31 | $1,162,751 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2016-12-31 | $1,162,751 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2016-12-31 | $619 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2016-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2016-12-31 | $0 |
| Expenses. Payments to insurance carriers foe the provision of benefits | 2016-12-31 | $0 |
| Asset value of US Government securities at end of year | 2016-12-31 | $0 |
| Asset value of US Government securities at beginning of year | 2016-12-31 | $0 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2016-12-31 | $1,139,243 |
| Net investment gain/loss from pooled separate accounts | 2016-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2016-12-31 | $0 |
| Net gain/loss from 103.12 investment entities | 2016-12-31 | $0 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2016-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2016-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2016-12-31 | No |
| Assets. Invements in employer securities at end of year | 2016-12-31 | $0 |
| Assets. Invements in employer securities at beginning of year | 2016-12-31 | $0 |
| Assets. Value of employer real property at end of year | 2016-12-31 | $0 |
| Assets. Value of employer real property at beginning of year | 2016-12-31 | $0 |
| Contributions received in cash from employer | 2016-12-31 | $970,046 |
| Employer contributions (assets) at end of year | 2016-12-31 | $0 |
| Employer contributions (assets) at beginning of year | 2016-12-31 | $0 |
| Income. Dividends from preferred stock | 2016-12-31 | $0 |
| Income. Dividends from common stock | 2016-12-31 | $0 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2016-12-31 | $2,943,714 |
| Asset. Corporate debt instrument preferred debt at end of year | 2016-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2016-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2016-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2016-12-31 | $0 |
| Contract administrator fees | 2016-12-31 | $0 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2016-12-31 | No |
| Assets. Corporate common stocks other than exployer securities at end of year | 2016-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2016-12-31 | $0 |
| Liabilities. Value of benefit claims payable at end of year | 2016-12-31 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2016-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at end of year | 2016-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at beginning of year | 2016-12-31 | $0 |
| Did the plan have assets held for investment | 2016-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2016-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2016-12-31 | No |
| Aggregate proceeds on sale of assets | 2016-12-31 | $0 |
| Aggregate carrying amount (costs) on sale of assets | 2016-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at end of year | 2016-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at beginning of year | 2016-12-31 | $0 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2016-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2016-12-31 | Disclaimer |
| Accountancy firm name | 2016-12-31 | RSM US LLP |
| Accountancy firm EIN | 2016-12-31 | 420714325 |
| 2015 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2015 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2015-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2015-12-31 | $0 |
| Total unrealized appreciation/depreciation of assets | 2015-12-31 | $0 |
| Total transfer of assets to this plan | 2015-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2015-12-31 | $0 |
| Expenses. Interest paid | 2015-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2015-12-31 | $0 |
| Total income from all sources (including contributions) | 2015-12-31 | $3,951,861 |
| Total loss/gain on sale of assets | 2015-12-31 | $0 |
| Total of all expenses incurred | 2015-12-31 | $1,274,377 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2015-12-31 | $1,270,154 |
| Expenses. Certain deemed distributions of participant loans | 2015-12-31 | $0 |
| Value of total corrective distributions | 2015-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2015-12-31 | $3,960,126 |
| Value of total assets at end of year | 2015-12-31 | $29,747,350 |
| Value of total assets at beginning of year | 2015-12-31 | $27,069,866 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2015-12-31 | $4,223 |
| Total income from rents | 2015-12-31 | $0 |
| Total interest from all sources | 2015-12-31 | $9,128 |
| Total dividends received (eg from common stock, registered investment company shares) | 2015-12-31 | $1,471,357 |
| 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 | $1,471,357 |
| Assets. Real estate other than employer real property at end of year | 2015-12-31 | $0 |
| Assets. Real estate other than employer real property at beginning of year | 2015-12-31 | $0 |
| Administrative expenses professional fees incurred | 2015-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2015-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2015-12-31 | $0 |
| Was this plan covered by a fidelity bond | 2015-12-31 | Yes |
| Value of fidelity bond cover | 2015-12-31 | $500,000 |
| If this is an individual account plan, was there a blackout period | 2015-12-31 | No |
| Were there any nonexempt tranactions with any party-in-interest | 2015-12-31 | No |
| Contributions received from participants | 2015-12-31 | $2,752,723 |
| Participant contributions at end of year | 2015-12-31 | $314,277 |
| Participant contributions at beginning of year | 2015-12-31 | $267,751 |
| Participant contributions at end of year | 2015-12-31 | $0 |
| Participant contributions at beginning of year | 2015-12-31 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2015-12-31 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2015-12-31 | $0 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2015-12-31 | $309,138 |
| Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries) | 2015-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2015-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2015-12-31 | $0 |
| Assets. Loans (other than to participants) at end of year | 2015-12-31 | $0 |
| Assets. Loans (other than to participants) at beginning of year | 2015-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2015-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2015-12-31 | $0 |
| Other income not declared elsewhere | 2015-12-31 | $0 |
| Administrative expenses (other) incurred | 2015-12-31 | $950 |
| Liabilities. Value of operating payables at end of year | 2015-12-31 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2015-12-31 | $0 |
| Total non interest bearing cash at end of year | 2015-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2015-12-31 | $0 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2015-12-31 | No |
| Income. Non cash contributions | 2015-12-31 | $0 |
| Value of net income/loss | 2015-12-31 | $2,677,484 |
| Value of net assets at end of year (total assets less liabilities) | 2015-12-31 | $29,747,350 |
| Value of net assets at beginning of year (total assets less liabilities) | 2015-12-31 | $27,069,866 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2015-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2015-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2015-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2015-12-31 | $0 |
| Assets. partnership/joint venture interests at beginning of year | 2015-12-31 | $0 |
| Investment advisory and management fees | 2015-12-31 | $3,273 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2015-12-31 | $28,270,322 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2015-12-31 | $25,918,033 |
| Value of interest in pooled separate accounts at end of year | 2015-12-31 | $0 |
| Value of interest in pooled separate accounts at beginning of year | 2015-12-31 | $0 |
| Interest on participant loans | 2015-12-31 | $9,128 |
| Income. Interest from loans (other than to participants) | 2015-12-31 | $0 |
| Interest earned on other investments | 2015-12-31 | $0 |
| Income. Interest from US Government securities | 2015-12-31 | $0 |
| Income. Interest from corporate debt instruments | 2015-12-31 | $0 |
| Value of interest in master investment trust accounts at end of year | 2015-12-31 | $0 |
| Value of interest in master investment trust accounts at beginning of year | 2015-12-31 | $0 |
| Value of interest in common/collective trusts at end of year | 2015-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2015-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2015-12-31 | $1,162,751 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2015-12-31 | $884,082 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2015-12-31 | $884,082 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2015-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2015-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2015-12-31 | $0 |
| Expenses. Payments to insurance carriers foe the provision of benefits | 2015-12-31 | $0 |
| Asset value of US Government securities at end of year | 2015-12-31 | $0 |
| Asset value of US Government securities at beginning of year | 2015-12-31 | $0 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2015-12-31 | $-1,488,750 |
| Net investment gain/loss from pooled separate accounts | 2015-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2015-12-31 | $0 |
| Net gain/loss from 103.12 investment entities | 2015-12-31 | $0 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2015-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2015-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2015-12-31 | No |
| Assets. Invements in employer securities at end of year | 2015-12-31 | $0 |
| Assets. Invements in employer securities at beginning of year | 2015-12-31 | $0 |
| Assets. Value of employer real property at end of year | 2015-12-31 | $0 |
| Assets. Value of employer real property at beginning of year | 2015-12-31 | $0 |
| Contributions received in cash from employer | 2015-12-31 | $898,265 |
| Employer contributions (assets) at end of year | 2015-12-31 | $0 |
| Employer contributions (assets) at beginning of year | 2015-12-31 | $0 |
| Income. Dividends from preferred stock | 2015-12-31 | $0 |
| Income. Dividends from common stock | 2015-12-31 | $0 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2015-12-31 | $1,270,154 |
| Asset. Corporate debt instrument preferred debt at end of year | 2015-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2015-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2015-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2015-12-31 | $0 |
| Contract administrator fees | 2015-12-31 | $0 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2015-12-31 | No |
| Assets. Corporate common stocks other than exployer securities at end of year | 2015-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2015-12-31 | $0 |
| Liabilities. Value of benefit claims payable at end of year | 2015-12-31 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2015-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at end of year | 2015-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at beginning of year | 2015-12-31 | $0 |
| Did the plan have assets held for investment | 2015-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2015-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2015-12-31 | No |
| Aggregate proceeds on sale of assets | 2015-12-31 | $0 |
| Aggregate carrying amount (costs) on sale of assets | 2015-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at end of year | 2015-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at beginning of year | 2015-12-31 | $0 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2015-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2015-12-31 | Disclaimer |
| Accountancy firm name | 2015-12-31 | RSM US LLP |
| Accountancy firm EIN | 2015-12-31 | 420714325 |
| 2014 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2014 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2014-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2014-12-31 | $0 |
| Total unrealized appreciation/depreciation of assets | 2014-12-31 | $0 |
| Total transfer of assets to this plan | 2014-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2014-12-31 | $0 |
| Expenses. Interest paid | 2014-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2014-12-31 | $0 |
| Total income from all sources (including contributions) | 2014-12-31 | $5,414,360 |
| Total loss/gain on sale of assets | 2014-12-31 | $0 |
| Total of all expenses incurred | 2014-12-31 | $1,054,587 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2014-12-31 | $1,049,551 |
| Expenses. Certain deemed distributions of participant loans | 2014-12-31 | $0 |
| Value of total corrective distributions | 2014-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2014-12-31 | $3,711,525 |
| Value of total assets at end of year | 2014-12-31 | $27,069,866 |
| Value of total assets at beginning of year | 2014-12-31 | $22,710,093 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2014-12-31 | $5,036 |
| Total income from rents | 2014-12-31 | $0 |
| Total interest from all sources | 2014-12-31 | $10,499 |
| Total dividends received (eg from common stock, registered investment company shares) | 2014-12-31 | $1,503,651 |
| 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 | $1,503,651 |
| Assets. Real estate other than employer real property at end of year | 2014-12-31 | $0 |
| Assets. Real estate other than employer real property at beginning of year | 2014-12-31 | $0 |
| Administrative expenses professional fees incurred | 2014-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2014-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2014-12-31 | $0 |
| Was this plan covered by a fidelity bond | 2014-12-31 | Yes |
| Value of fidelity bond cover | 2014-12-31 | $500,000 |
| If this is an individual account plan, was there a blackout period | 2014-12-31 | No |
| Were there any nonexempt tranactions with any party-in-interest | 2014-12-31 | No |
| Contributions received from participants | 2014-12-31 | $2,675,820 |
| Participant contributions at end of year | 2014-12-31 | $267,751 |
| Participant contributions at beginning of year | 2014-12-31 | $253,619 |
| Participant contributions at end of year | 2014-12-31 | $0 |
| Participant contributions at beginning of year | 2014-12-31 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2014-12-31 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2014-12-31 | $0 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2014-12-31 | $160,974 |
| Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries) | 2014-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2014-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2014-12-31 | $0 |
| Assets. Loans (other than to participants) at end of year | 2014-12-31 | $0 |
| Assets. Loans (other than to participants) at beginning of year | 2014-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2014-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2014-12-31 | $0 |
| Other income not declared elsewhere | 2014-12-31 | $0 |
| Administrative expenses (other) incurred | 2014-12-31 | $2,028 |
| Liabilities. Value of operating payables at end of year | 2014-12-31 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2014-12-31 | $0 |
| Total non interest bearing cash at end of year | 2014-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2014-12-31 | $0 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2014-12-31 | No |
| Income. Non cash contributions | 2014-12-31 | $0 |
| Value of net income/loss | 2014-12-31 | $4,359,773 |
| Value of net assets at end of year (total assets less liabilities) | 2014-12-31 | $27,069,866 |
| Value of net assets at beginning of year (total assets less liabilities) | 2014-12-31 | $22,710,093 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2014-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2014-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2014-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2014-12-31 | $0 |
| Assets. partnership/joint venture interests at beginning of year | 2014-12-31 | $0 |
| Investment advisory and management fees | 2014-12-31 | $3,008 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2014-12-31 | $25,918,033 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2014-12-31 | $21,553,980 |
| Value of interest in pooled separate accounts at end of year | 2014-12-31 | $0 |
| Value of interest in pooled separate accounts at beginning of year | 2014-12-31 | $0 |
| Interest on participant loans | 2014-12-31 | $10,407 |
| Income. Interest from loans (other than to participants) | 2014-12-31 | $0 |
| Interest earned on other investments | 2014-12-31 | $0 |
| Income. Interest from US Government securities | 2014-12-31 | $0 |
| Income. Interest from corporate debt instruments | 2014-12-31 | $0 |
| Value of interest in master investment trust accounts at end of year | 2014-12-31 | $0 |
| Value of interest in master investment trust accounts at beginning of year | 2014-12-31 | $0 |
| Value of interest in common/collective trusts at end of year | 2014-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2014-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2014-12-31 | $884,082 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2014-12-31 | $902,494 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2014-12-31 | $902,494 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2014-12-31 | $92 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2014-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2014-12-31 | $0 |
| Expenses. Payments to insurance carriers foe the provision of benefits | 2014-12-31 | $0 |
| Asset value of US Government securities at end of year | 2014-12-31 | $0 |
| Asset value of US Government securities at beginning of year | 2014-12-31 | $0 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2014-12-31 | $188,685 |
| Net investment gain/loss from pooled separate accounts | 2014-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2014-12-31 | $0 |
| Net gain/loss from 103.12 investment entities | 2014-12-31 | $0 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2014-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2014-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2014-12-31 | No |
| Assets. Invements in employer securities at end of year | 2014-12-31 | $0 |
| Assets. Invements in employer securities at beginning of year | 2014-12-31 | $0 |
| Assets. Value of employer real property at end of year | 2014-12-31 | $0 |
| Assets. Value of employer real property at beginning of year | 2014-12-31 | $0 |
| Contributions received in cash from employer | 2014-12-31 | $874,731 |
| Employer contributions (assets) at end of year | 2014-12-31 | $0 |
| Employer contributions (assets) at beginning of year | 2014-12-31 | $0 |
| Income. Dividends from preferred stock | 2014-12-31 | $0 |
| Income. Dividends from common stock | 2014-12-31 | $0 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2014-12-31 | $1,049,551 |
| Asset. Corporate debt instrument preferred debt at end of year | 2014-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2014-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2014-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2014-12-31 | $0 |
| Contract administrator fees | 2014-12-31 | $0 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2014-12-31 | No |
| Assets. Corporate common stocks other than exployer securities at end of year | 2014-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2014-12-31 | $0 |
| Liabilities. Value of benefit claims payable at end of year | 2014-12-31 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2014-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at end of year | 2014-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at beginning of year | 2014-12-31 | $0 |
| Did the plan have assets held for investment | 2014-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2014-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2014-12-31 | No |
| Aggregate proceeds on sale of assets | 2014-12-31 | $0 |
| Aggregate carrying amount (costs) on sale of assets | 2014-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at end of year | 2014-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at beginning of year | 2014-12-31 | $0 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2014-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2014-12-31 | Disclaimer |
| Accountancy firm name | 2014-12-31 | MCGLADREY LLP |
| Accountancy firm EIN | 2014-12-31 | 420714325 |
| 2013 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2013 401k financial data |
|---|
| Unrealized appreciation/depreciation of real estate assets | 2013-12-31 | $0 |
| Unrealized appreciation/depreciation of other (non real estate) assets | 2013-12-31 | $0 |
| Total unrealized appreciation/depreciation of assets | 2013-12-31 | $0 |
| Total transfer of assets to this plan | 2013-12-31 | $0 |
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2013-12-31 | $0 |
| Expenses. Interest paid | 2013-12-31 | $0 |
| Amount of participant contributions which was failed to transmit to the plan within the time period described in 29 CFR 251.3-102 | 2013-12-31 | $0 |
| Total income from all sources (including contributions) | 2013-12-31 | $7,473,487 |
| Total loss/gain on sale of assets | 2013-12-31 | $0 |
| Total of all expenses incurred | 2013-12-31 | $1,156,992 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2013-12-31 | $1,152,502 |
| Expenses. Certain deemed distributions of participant loans | 2013-12-31 | $0 |
| Value of total corrective distributions | 2013-12-31 | $0 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2013-12-31 | $3,517,811 |
| Value of total assets at end of year | 2013-12-31 | $22,710,093 |
| Value of total assets at beginning of year | 2013-12-31 | $16,393,598 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2013-12-31 | $4,490 |
| Total income from rents | 2013-12-31 | $0 |
| Total interest from all sources | 2013-12-31 | $9,629 |
| Total dividends received (eg from common stock, registered investment company shares) | 2013-12-31 | $998,624 |
| 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 | $998,624 |
| Assets. Real estate other than employer real property at end of year | 2013-12-31 | $0 |
| Assets. Real estate other than employer real property at beginning of year | 2013-12-31 | $0 |
| Administrative expenses professional fees incurred | 2013-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at end of year | 2013-12-31 | $0 |
| Assets. Corporate prefeered stocks other than exployer securities at beginning of year | 2013-12-31 | $0 |
| Was this plan covered by a fidelity bond | 2013-12-31 | Yes |
| Value of fidelity bond cover | 2013-12-31 | $500,000 |
| If this is an individual account plan, was there a blackout period | 2013-12-31 | No |
| Were there any nonexempt tranactions with any party-in-interest | 2013-12-31 | No |
| Contributions received from participants | 2013-12-31 | $2,489,510 |
| Participant contributions at end of year | 2013-12-31 | $253,619 |
| Participant contributions at beginning of year | 2013-12-31 | $201,741 |
| Participant contributions at end of year | 2013-12-31 | $0 |
| Participant contributions at beginning of year | 2013-12-31 | $0 |
| Assets. Other investments not covered elsewhere at end of year | 2013-12-31 | $0 |
| Assets. Other investments not covered elsewhere at beginning of year | 2013-12-31 | $0 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2013-12-31 | $240,589 |
| Expenses. Other payments made (not to insurance carriers or or participants/beneficiaries) | 2013-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at end of year | 2013-12-31 | $0 |
| Value of other receiveables (less allowance for doubtful accounts) at beginning of year | 2013-12-31 | $0 |
| Assets. Loans (other than to participants) at end of year | 2013-12-31 | $0 |
| Assets. Loans (other than to participants) at beginning of year | 2013-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at end of year | 2013-12-31 | $0 |
| Other liabilities (not benefit claims, operating payabales oe acquisition indebtedness) at beginning of year | 2013-12-31 | $0 |
| Other income not declared elsewhere | 2013-12-31 | $0 |
| Administrative expenses (other) incurred | 2013-12-31 | $1,937 |
| Liabilities. Value of operating payables at end of year | 2013-12-31 | $0 |
| Liabilities. Value of operating payables at beginning of year | 2013-12-31 | $0 |
| Total non interest bearing cash at end of year | 2013-12-31 | $0 |
| Total non interest bearing cash at beginning of year | 2013-12-31 | $0 |
| Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser | 2013-12-31 | No |
| Income. Non cash contributions | 2013-12-31 | $0 |
| Value of net income/loss | 2013-12-31 | $6,316,495 |
| Value of net assets at end of year (total assets less liabilities) | 2013-12-31 | $22,710,093 |
| Value of net assets at beginning of year (total assets less liabilities) | 2013-12-31 | $16,393,598 |
| Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond) | 2013-12-31 | No |
| Were any loans by the plan or fixed income obligations due to the plan in default | 2013-12-31 | No |
| Were any leases to which the plan was party in default or uncollectible | 2013-12-31 | No |
| Assets. partnership/joint venture interests at end of year | 2013-12-31 | $0 |
| Assets. partnership/joint venture interests at beginning of year | 2013-12-31 | $0 |
| Investment advisory and management fees | 2013-12-31 | $2,553 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2013-12-31 | $21,553,980 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2013-12-31 | $15,063,681 |
| Value of interest in pooled separate accounts at end of year | 2013-12-31 | $0 |
| Value of interest in pooled separate accounts at beginning of year | 2013-12-31 | $0 |
| Interest on participant loans | 2013-12-31 | $9,514 |
| Income. Interest from loans (other than to participants) | 2013-12-31 | $0 |
| Interest earned on other investments | 2013-12-31 | $0 |
| Income. Interest from US Government securities | 2013-12-31 | $0 |
| Income. Interest from corporate debt instruments | 2013-12-31 | $0 |
| Value of interest in master investment trust accounts at end of year | 2013-12-31 | $0 |
| Value of interest in master investment trust accounts at beginning of year | 2013-12-31 | $0 |
| Value of interest in common/collective trusts at end of year | 2013-12-31 | $0 |
| Value of interest in common/collective trusts at beginning of year | 2013-12-31 | $0 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2013-12-31 | $902,494 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2013-12-31 | $1,128,176 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2013-12-31 | $1,128,176 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2013-12-31 | $115 |
| Assets. Value of investments in 103.12 investment entities at end of year | 2013-12-31 | $0 |
| Assets. Value of investments in 103.12 investment entities at beginning of year | 2013-12-31 | $0 |
| Expenses. Payments to insurance carriers foe the provision of benefits | 2013-12-31 | $0 |
| Asset value of US Government securities at end of year | 2013-12-31 | $0 |
| Asset value of US Government securities at beginning of year | 2013-12-31 | $0 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2013-12-31 | $2,947,423 |
| Net investment gain/loss from pooled separate accounts | 2013-12-31 | $0 |
| Net investment gain or loss from common/collective trusts | 2013-12-31 | $0 |
| Net gain/loss from 103.12 investment entities | 2013-12-31 | $0 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2013-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2013-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2013-12-31 | No |
| Assets. Invements in employer securities at end of year | 2013-12-31 | $0 |
| Assets. Invements in employer securities at beginning of year | 2013-12-31 | $0 |
| Assets. Value of employer real property at end of year | 2013-12-31 | $0 |
| Assets. Value of employer real property at beginning of year | 2013-12-31 | $0 |
| Contributions received in cash from employer | 2013-12-31 | $787,712 |
| Employer contributions (assets) at end of year | 2013-12-31 | $0 |
| Employer contributions (assets) at beginning of year | 2013-12-31 | $0 |
| Income. Dividends from preferred stock | 2013-12-31 | $0 |
| Income. Dividends from common stock | 2013-12-31 | $0 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2013-12-31 | $1,152,502 |
| Asset. Corporate debt instrument preferred debt at end of year | 2013-12-31 | $0 |
| Asset. Corporate debt instrument preferred debt at beginning of year | 2013-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at end of year | 2013-12-31 | $0 |
| Asset. Corporate debt instrument debt (other) at beginning of year | 2013-12-31 | $0 |
| Contract administrator fees | 2013-12-31 | $0 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2013-12-31 | No |
| Assets. Corporate common stocks other than exployer securities at end of year | 2013-12-31 | $0 |
| Assets. Corporate common stocks other than exployer securities at beginning of year | 2013-12-31 | $0 |
| Liabilities. Value of benefit claims payable at end of year | 2013-12-31 | $0 |
| Liabilities. Value of benefit claims payable at beginning of year | 2013-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at end of year | 2013-12-31 | $0 |
| Assets. Value of buildings and other operty used in plan operation at beginning of year | 2013-12-31 | $0 |
| Did the plan have assets held for investment | 2013-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2013-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2013-12-31 | No |
| Aggregate proceeds on sale of assets | 2013-12-31 | $0 |
| Aggregate carrying amount (costs) on sale of assets | 2013-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at end of year | 2013-12-31 | $0 |
| Liabilities. Value of acquisition indebtedness at beginning of year | 2013-12-31 | $0 |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2013-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2013-12-31 | Disclaimer |
| Accountancy firm name | 2013-12-31 | MCGLADREY LLP |
| Accountancy firm EIN | 2013-12-31 | 420714325 |
| 2012 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2012 401k financial data |
|---|
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2012-12-31 | $0 |
| Total income from all sources (including contributions) | 2012-12-31 | $6,349,136 |
| Total of all expenses incurred | 2012-12-31 | $710,773 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2012-12-31 | $708,274 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2012-12-31 | $4,658,272 |
| Value of total assets at end of year | 2012-12-31 | $16,393,598 |
| Value of total assets at beginning of year | 2012-12-31 | $10,755,235 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2012-12-31 | $2,499 |
| Total interest from all sources | 2012-12-31 | $4,497 |
| Total dividends received (eg from common stock, registered investment company shares) | 2012-12-31 | $341,363 |
| 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 | $341,363 |
| Was this plan covered by a fidelity bond | 2012-12-31 | Yes |
| Value of fidelity bond cover | 2012-12-31 | $500,000 |
| 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 | $2,188,429 |
| Participant contributions at end of year | 2012-12-31 | $201,741 |
| Participant contributions at beginning of year | 2012-12-31 | $73,506 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2012-12-31 | $1,785,562 |
| Administrative expenses (other) incurred | 2012-12-31 | $1,471 |
| 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 | $5,638,363 |
| Value of net assets at end of year (total assets less liabilities) | 2012-12-31 | $16,393,598 |
| Value of net assets at beginning of year (total assets less liabilities) | 2012-12-31 | $10,755,235 |
| 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 |
| Investment advisory and management fees | 2012-12-31 | $1,028 |
| Value of interest in registered invesment companies (eg mutual funds) at end of year | 2012-12-31 | $15,063,681 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2012-12-31 | $9,801,622 |
| Interest on participant loans | 2012-12-31 | $4,405 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2012-12-31 | $1,128,176 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2012-12-31 | $880,107 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2012-12-31 | $880,107 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2012-12-31 | $92 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2012-12-31 | $1,345,004 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2012-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2012-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2012-12-31 | No |
| Contributions received in cash from employer | 2012-12-31 | $684,281 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2012-12-31 | $708,274 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2012-12-31 | No |
| Did the plan have assets held for investment | 2012-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2012-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2012-12-31 | No |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2012-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2012-12-31 | Disclaimer |
| Accountancy firm name | 2012-12-31 | MCGLADREY LLP |
| Accountancy firm EIN | 2012-12-31 | 420714325 |
| 2011 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2011 401k financial data |
|---|
| Total income from all sources (including contributions) | 2011-12-31 | $2,213,683 |
| Total of all expenses incurred | 2011-12-31 | $800,708 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2011-12-31 | $799,866 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2011-12-31 | $2,453,942 |
| Value of total assets at end of year | 2011-12-31 | $10,755,235 |
| Value of total assets at beginning of year | 2011-12-31 | $9,342,260 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2011-12-31 | $842 |
| Total interest from all sources | 2011-12-31 | $2,962 |
| Total dividends received (eg from common stock, registered investment company shares) | 2011-12-31 | $247,635 |
| 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 | $247,635 |
| Was this plan covered by a fidelity bond | 2011-12-31 | Yes |
| Value of fidelity bond cover | 2011-12-31 | $500,000 |
| 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 | $1,748,165 |
| Participant contributions at end of year | 2011-12-31 | $73,506 |
| Participant contributions at beginning of year | 2011-12-31 | $69,470 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2011-12-31 | $163,250 |
| Administrative expenses (other) incurred | 2011-12-31 | $842 |
| 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 | $1,412,975 |
| Value of net assets at end of year (total assets less liabilities) | 2011-12-31 | $10,755,235 |
| Value of net assets at beginning of year (total assets less liabilities) | 2011-12-31 | $9,342,260 |
| 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 | $9,801,622 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2011-12-31 | $8,676,012 |
| Interest on participant loans | 2011-12-31 | $2,885 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2011-12-31 | $880,107 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2011-12-31 | $596,778 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2011-12-31 | $596,778 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2011-12-31 | $77 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2011-12-31 | $-490,856 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2011-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2011-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2011-12-31 | No |
| Contributions received in cash from employer | 2011-12-31 | $542,527 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2011-12-31 | $799,866 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2011-12-31 | No |
| Did the plan have assets held for investment | 2011-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2011-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2011-12-31 | No |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2011-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2011-12-31 | Disclaimer |
| Accountancy firm name | 2011-12-31 | MCGLADREY LLP |
| Accountancy firm EIN | 2011-12-31 | 042775195 |
| 2010 : MOMENTA PHARMACEUTICALS 401(K) PLAN 2010 401k financial data |
|---|
| Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $0 |
| Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities) | 2010-12-31 | $0 |
| Total income from all sources (including contributions) | 2010-12-31 | $3,265,392 |
| Total of all expenses incurred | 2010-12-31 | $632,207 |
| Benefit payments and payments to participlants,beneficiaries,insurance carriers and others | 2010-12-31 | $630,592 |
| Total contributions o plan (from employers,participants, others, non cash contrinutions) | 2010-12-31 | $2,078,250 |
| Value of total assets at end of year | 2010-12-31 | $9,342,260 |
| Value of total assets at beginning of year | 2010-12-31 | $6,709,075 |
| Total of administrative expenses incurred including professional, contract, advisory and management fees | 2010-12-31 | $1,615 |
| Total interest from all sources | 2010-12-31 | $2,893 |
| Total dividends received (eg from common stock, registered investment company shares) | 2010-12-31 | $121,504 |
| 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 | $121,504 |
| Was this plan covered by a fidelity bond | 2010-12-31 | Yes |
| Value of fidelity bond cover | 2010-12-31 | $500,000 |
| 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 | $1,514,440 |
| Participant contributions at end of year | 2010-12-31 | $69,470 |
| Participant contributions at beginning of year | 2010-12-31 | $57,735 |
| Income. Received or receivable in cash from other sources (including rollovers) | 2010-12-31 | $51,777 |
| Administrative expenses (other) incurred | 2010-12-31 | $1,615 |
| 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 | $2,633,185 |
| Value of net assets at end of year (total assets less liabilities) | 2010-12-31 | $9,342,260 |
| Value of net assets at beginning of year (total assets less liabilities) | 2010-12-31 | $6,709,075 |
| 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 | $8,676,012 |
| Value of interest in registered invesment companies (eg mutual funds) at beginning of year | 2010-12-31 | $6,231,414 |
| Interest on participant loans | 2010-12-31 | $2,801 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at end of year | 2010-12-31 | $596,778 |
| Interest-bearing cash (include money market accounts & certificates of deposit) at beginning of the Year | 2010-12-31 | $419,926 |
| Value of interest bearing cash (including money market accounts and certificates of deposits) at beginning of year | 2010-12-31 | $419,926 |
| Interest earned from interest bearing cash (including money market accounts and certificates of deposit) | 2010-12-31 | $92 |
| Net investment gain/loss from registered investment companies (e.g. mutual funds) | 2010-12-31 | $1,062,745 |
| Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets | 2010-12-31 | No |
| Was there a failure to transmit to the plan any participant contributions | 2010-12-31 | No |
| Has the plan failed to provide any benefit when due under the plan | 2010-12-31 | No |
| Contributions received in cash from employer | 2010-12-31 | $512,033 |
| Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers | 2010-12-31 | $630,592 |
| Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3 | 2010-12-31 | No |
| Did the plan have assets held for investment | 2010-12-31 | Yes |
| Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser | 2010-12-31 | No |
| Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC | 2010-12-31 | No |
| Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d) | 2010-12-31 | Yes |
| Opinion of an independent qualified public accountant for this plan | 2010-12-31 | Disclaimer |
| Accountancy firm name | 2010-12-31 | MCGLADREY & PULLEN, LLC |
| Accountancy firm EIN | 2010-12-31 | 420714325 |
| 2009 : MOMENTA PHARMACEUTICALS 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 | $0 |
