Plan Ledger DOL Form 5500 · updated monthly

Merrimack Pharmaceuticals, Inc.401(k)

MERRIMACK PHARMACEUTICALS, INC. 401(K) RETIREMENT PLAN · CAMBRIDGE, MA · plan year 2023

Reported admin expense ratio · 2023
0.14%

Merrimack Pharmaceuticals, Inc. reported $19,501 in plan administrative expenses for 2023: 0.14% of average plan assets, below the peer median. This ratio covers administrative expenses reported on the plan's Schedule H only; fund-level expense ratios are not included in public structured data — see methodology.

Across the 2 years on file its reported administrative ratio fell from 0.04% to 0.00%. The plan sits in the $10M–$50M size bracket, benchmarked here against 26,779 comparable plans and shown alongside other manufacturing employers. By assets it is among the smaller plans on file in Massachusetts (1,567th of 2,726), and 7,251st of 13,661 in manufacturing.

Plan summary
Net assets, end of year$14,454,687
Participants with balances156
Active participants0
Employer contributions$0
Employee contributions$0
Employer contribution per active participant—
Average account balance$92,658
Benefits paid to participants$967,948
Plan auditUnmodified (clean) audit opinion
Plan history3
Yearassets · accounts · employer contribution
2024$465K · 3 accts
2023$14.5M · 156 accts
2022$13.2M · 171 accts
Administrative expenses, itemized · 2023
Recordkeeping & contract admin$75
Total administrative$19,501
What these fees cost you

Annual cost at the plan's reported 2023 administrative ratio, against the median plan its size; fund expense ratios are extra. Compare any plan.

Service providers · 20233
COHNREZNICK LLP · Accounting / audit$19,426
MML INVESTOR SERVICES LLCindirect comp

Compensation shown is direct payments from plan assets reported on Schedule C. Providers paid through fund revenue-sharing appear as indirect.

Administrative cost history3
2024$295 · 0.00%
2023$19,501 · 0.14%
2022$6,325 · 0.04%
Similar plansManufacturing · Massachusetts
Desktop Labs Inc. MA$14.9M · 0.30%
Berkshire Corporation MA$14.6M · 0.36%
Boston Centerless Inc. MA$14.5M · 0.27%
Savage Arms, Inc. MA$14.4M · 0.19%
Zink Holdings LLC MA$14.3M · 0.03%
Checon, LLC MA$14.2M · 0.54%
Kate Farms, Inc. MA$14.1M · 0.02%

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Source: U.S. Department of Labor, Form 5500 series, EIN 043210530 · Verify on EFAST2 · Amounts are as reported by the plan sponsor for the plan year shown.