Plan Ledger DOL Form 5500 · updated monthly

Sutro Biopharma, Inc.401(k)

SUTRO BIOPHARMA, INC. 401(K) PLAN · SOUTH SAN FRANCISCO, CA · plan year 2024

Reported admin expense ratio · 2024
0.25%

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

Sutro Biopharma, Inc. reported $94,393 in plan administrative expenses for 2024: 0.25% of average plan assets, below the peer median. Employer contributions averaged $4,048 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.

Across the 2 years on file its reported administrative ratio fell from 0.37% to 0.25%. The plan sits in the $10M–$50M size bracket, benchmarked here against 27,838 comparable plans and shown alongside other professional & technical services employers. By assets it is the 1,968th-largest of 9,483 plans among California employers on file, and the 3,062nd of 11,654 in professional & technical services. In 2024, employees put in $4.38 for every $1.00 the employer contributed; active participation has grown from 288 to 340 since 2022.

Plan summary
Net assets, end of year$43,901,389
Participants with balances390
Active participants340
Employer contributions$1,376,319
Employee contributions$6,021,883
Employer contribution per active participant$4,048
Average account balance$112,568
Benefits paid to participants$1,229,174
Plan auditUnmodified (clean) audit opinion
Plan history3
Yearassets · accounts · employer contribution
2024$43.9M · 390 accts · $1.4M emplr
2023$31.5M · 361 accts · $1.0M emplr
2022$20.6M · 309 accts · $846K emplr
Administrative expenses, itemized · 2024
Recordkeeping & contract admin$19,206
Investment management$75,187
Total administrative$94,393
The Sutro Biopharma, Inc. 401(k) match · 2024
Employer contribution per active participant$4,048
Median for plans this size$2,416
2024$4,048 per active participant
2023$3,147 per active participant
2022$2,939 per active participant

Sutro Biopharma, Inc.'s 2024 employer contribution ran above the $2,416 median for plans its size. 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 2024 administrative ratio, against the median plan its size; fund expense ratios are extra. Compare any plan.

Service providers · 20242
ONEDIGITAL INVESTMENT ADVISORS LLC · Investment advisory (plan)$74,153
FIDELITY INVESTMENTS INSTITUTIONAL · Loan processing$19,206

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$94,393 · 0.25%
2023$113,808 · 0.44%
2022$77,797 · 0.37%
Same employer
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Allogene Therapeutics, Inc. CA$44.0M · 0.09%
Cordoba Corporation CA$44.0M · 0.20%
Railpros, Inc. CA$44.0M · 0.26%
Brayton Purcell, LLP CA$43.7M · 0.15%
Wave Computing CA$43.6M · 0.18%
Smartthings, Inc. CA$43.6M · 0.24%

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Source: U.S. Department of Labor, Form 5500 series, EIN 470926186 · Verify on EFAST2 · Amounts are as reported by the plan sponsor for the plan year shown.