Marinus Pharmaceuticals, Inc.401(k)
MARINUS PHARMACEUTICALS, INC. 401(K) PLAN · RADNOR, PA · plan year 2024
Peer grade: A · admin costs + employer contributions vs same-size plans · how grading works
Marinus Pharmaceuticals, Inc. reported $3,785 in plan administrative expenses for 2024: 0.03% of average plan assets, lower than ~75% of peers. Employer contributions averaged $15,676 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 0.80% to 0.03%. 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 among the smaller plans on file in Pennsylvania (1,879th of 3,651), and 6,654th of 11,654 in professional & technical services. In 2024, employees put in $2.51 for every $1.00 the employer contributed; active participation has shrunk from 152 to 61 since 2022.
Marinus Pharmaceuticals, 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.
Annual cost at the plan's reported 2024 administrative ratio, against the median plan its size; fund expense ratios are extra. Compare any plan.
Compensation shown is direct payments from plan assets reported on Schedule C. Providers paid through fund revenue-sharing appear as indirect.
This plan has changed recordkeepers within these filings. If you left Marinus Pharmaceuticals, Inc. before a switch, your account may sit at the earlier firm or in a rollover IRA. Looking for an account from a past job here? How to find an old 401(k).
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Source: U.S. Department of Labor, Form 5500 series, EIN 200198082 · Verify on EFAST2 · Amounts are as reported by the plan sponsor for the plan year shown.