Day One Biopharmaceuticals 401(k) match, vesting and fees

Plan year 2024 filingDay One Biopharmaceuticals 401(k) Plan · Plan 001 · EIN 83-2415215Updated Oct 2026

What Day One Biopharmaceuticals' 401(k) plan says about matching contributions

The match terms have not been published from this plan's filing yet.
The plan year 2024 filing reports $1.7M in employer contributions, about $8,690 per participant. That total includes any match and profit-sharing; it is not a match formula. Plan year 2024 Form 5500 ↗
$91,114
Average account balance
207
Participants (end of year)
$17.7M
Plan assets (end of year)
<0.01%
Admin expenses ÷ assets

Plan features

Match, vesting and enrollment details have not been published from this plan's audit report yet. The figures below come from the structured filing.

RecordkeeperFidelity Investments InstitutionalSchedule C ↗
Independent auditorCbiz Cpas P.C. (unmodified opinion, limited scope)Schedule H ↗
Plan type and status401(k) · ActiveForm 5500 ↗

How the plan compares

Plan year 2024 medians for 9,213 defined-contribution plans in professional, scientific, and technical services with 100 to 499 participants.

Day One Biopharmaceuticals: employer contribution per participant$8,690
Peer median$2,521
Day One Biopharmaceuticals: average balance$91,114
Peer median$75,833
Day One Biopharmaceuticals: admin expenses ÷ assets<0.01%
Peer median0.27%

Admin expenses are the plan's reported administrative expenses divided by its assets; they do not include fund expense ratios.

Plan history

Plan assets went from $4.1M at the end of plan year 2022 to $17.7M at the end of plan year 2024.

$4.1M2022$10.5M2023$17.7M2024
End-of-year figures from each plan year's Form 5500 filing for the Day One Biopharmaceuticals plan.
Plan yearParticipantsAssetsEmployer contributionsPer participantAdmin expense ratioMatch formulaFiling
2024207$17.7M$1.7M$8,690<0.01%Not publishedForm 5500 ↗
2023168$10.5M$1.3M$8,617—Not publishedForm 5500 ↗
2022125$4.1M$177K$1,658<0.01%Not publishedForm 5500 ↗

Common questions

Does Day One Biopharmaceuticals match 401(k) contributions?

The match terms for the Day One Biopharmaceuticals 401(k) Plan have not been published from its filing yet. The plan year 2024 filing reports $1.7M in employer contributions, about $8,690 per participant. That total includes any match and profit-sharing; it is not a match formula.

When is the Day One Biopharmaceuticals 401(k) match vested?

The vesting schedule for the Day One Biopharmaceuticals 401(k) Plan is not in the data published so far. Your Summary Plan Description states it.

Who manages the Day One Biopharmaceuticals 401(k)?

The recordkeeper listed on Schedule C of the plan year 2024 filing is Fidelity Investments Institutional. The plan administrator is Day One Biopharmaceuticals, Inc..

I left Day One Biopharmaceuticals. How do I find my old 401(k)?

Your account stays in the plan until you move it. Contact the plan administrator (Day One Biopharmaceuticals, Inc., (650) 484-0899) or the recordkeeper, Fidelity Investments Institutional. The Day One Biopharmaceuticals old 401(k) page lists the contacts from every plan filing. Find an old Day One Biopharmaceuticals 401(k)

Data from the public Form 5500 annual reports Day One Biopharmaceuticals filed with the U.S. Department of Labor (plan years 2022 and 2023 and 2024) and, where noted, the attached independent auditor's report. Plan terms may have changed since the filing; check your current Summary Plan Description. PlanFacts is not affiliated with Day One Biopharmaceuticals. Not financial advice. Report a correction · Methodology