Plan Ledger DOL Form 5500 · updated monthly

Cullinan Therapeutics, Inc.401(k)

CULLINAN THERAPEUTICS, INC. 401(K) PLAN · CAMBRIDGE, MA · plan year 2025

Reported admin expense ratio · 2025
0.01%

Peer grade: A · admin costs + employer contributions vs same-size plans · how grading works

Cullinan Therapeutics, Inc. reported $1,016 in plan administrative expenses for 2025: 0.01% of average plan assets, lower than ~75% of peers. Employer contributions averaged $16,090 per active participant. 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.

The plan sits in the $10M–$50M size bracket, benchmarked here against 1,620 comparable plans and shown alongside other professional & technical services employers. By assets it is among the smaller plans on file in Massachusetts (1,408th of 2,726), and 5,917th of 11,654 in professional & technical services. In 2025, employees put in $1.50 for every $1.00 the employer contributed.

Plan summary
Net assets, end of year$18,003,166
Participants with balances136
Active participants109
Employer contributions$1,753,815
Employee contributions$2,622,048
Employer contribution per active participant$16,090
Average account balance$132,376
Benefits paid to participants$757,982
Plan auditUnmodified (clean) audit opinion
AuditorCARON BLETZER, PLLC
Administrative expenses, itemized · 2025
Recordkeeping & contract admin$1,016
Total administrative$1,016
The Cullinan Therapeutics, Inc. 401(k) match · 2025
Employer contribution per active participant$16,090
Median for plans this size$2,666

Cullinan Therapeutics, Inc.'s 2025 employer contribution ran above the $2,666 median for plans its size, placing it in the top quarter of its peers. Filings report dollars actually contributed, not the match formula; the formula itself (for example, 50% of the first 6% of pay) lives in the plan's summary plan description from HR.

What these fees cost you

Annual cost at the plan's reported 2025 administrative ratio, against the median plan its size; fund expense ratios are extra. Compare any plan.

Service providers · 20251
THE VANGUARD GROUP, INC. · Recordkeeping$1,016

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

Administrative cost history1
2025$1,016 · 0.01%
Same employer
Similar plansProfessional & Technical Services · Massachusetts
Cti Biopharma Corp MA$18.3M · 0.13%
Syner-G Biopharma Group LLC MA$18.3M · 0.25%
Eqrx International, Inc. MA$18.1M · 0.05%
Formlabs, Inc. MA$17.8M · 0.41%
Clearplan Consulting, LLC MA$17.7M · 0.17%
Karuna Therapeutics MA$17.6M · 0.27%
Cogent Biosciences, Inc. MA$17.6M · 0.10%

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Source: U.S. Department of Labor, Form 5500 series, EIN 813879991 · Verify on EFAST2 · Amounts are as reported by the plan sponsor for the plan year shown.