Plan Ledger DOL Form 5500 · updated monthly

Prothena Biosciences Inc401(k)

PROTHENA BIOSCIENCES INC 401(K) PLAN · BRISBANE, CA · plan year 2024

Reported admin expense ratio · 2024
0.00%

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

Prothena Biosciences Inc reported $1,350 in plan administrative expenses for 2024: 0.00% of average plan assets, lower than ~75% of peers. Employer contributions averaged $11,991 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 1 year on file its reported administrative ratio fell from 0.005% to 0.004%. 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 2,082nd-largest of 9,483 plans among California employers on file, and the 3,240th of 11,654 in professional & technical services. In 2024, employees put in $1.98 for every $1.00 the employer contributed; active participation has grown from 115 to 150 since 2022.

Plan summary
Net assets, end of year$41,045,479
Participants with balances211
Active participants150
Employer contributions$1,798,665
Employee contributions$3,556,637
Employer contribution per active participant$11,991
Average account balance$194,528
Benefits paid to participants$3,555,140
Plan auditUnmodified (clean) audit opinion
Plan history3
Yearassets · accounts · employer contribution
2024$41.0M · 211 accts · $1.8M emplr
2023$34.0M · 211 accts · $1.6M emplr
2022$25.7M · 165 accts · $1.0M emplr
Administrative expenses, itemized · 2024
Recordkeeping & contract admin$1,350
Total administrative$1,350
The Prothena Biosciences Inc 401(k) match · 2024
Employer contribution per active participant$11,991
Median for plans this size$2,416
2024$11,991 per active participant
2023$9,965 per active participant
2022$9,043 per active participant

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

Service providers · 20241
FIDELITY INVESTMENTS INSTITUTIONAL · Loan processing$1,350

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$1,350 · 0.00%
2023$1,419 · 0.00%
2022Not separately reported
Same employer
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Source: U.S. Department of Labor, Form 5500 series, EIN 461256213 · Verify on EFAST2 · Amounts are as reported by the plan sponsor for the plan year shown.