Eos Energy Storage retirement plan: assets, participants and fees

Plan year 2024 filingEos Energy Storage LLC Retirement Savings Plan · Plan 002 · EIN 32-0256144Updated Oct 2026

What Eos Energy Storage's retirement plan plan says about matching contributions

The match terms have not been published from this plan's filing yet.
The plan year 2024 filing reports $1.4M in employer contributions, about $2,079 per participant. That total includes any match and profit-sharing; it is not a match formula. Plan year 2024 Form 5500 ↗
$16,241
Average account balance
656
Participants (end of year)
$10.7M
Plan assets (end of year)
1.77%
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.

RecordkeeperPrincipal Life Insurance CompanySchedule C ↗
Independent auditorGrossman Yanak & Ford LLP (unmodified opinion, limited scope)Schedule H ↗
Plan type and statusProfit-sharing · ActiveForm 5500 ↗
Late participant contributionsReported on the filingSchedule H ↗

How the plan compares

Plan year 2024 medians for 1,612 defined-contribution plans in manufacturing with 500 to 999 participants.

Eos Energy Storage: employer contribution per participant$2,079
Peer median$2,038
Eos Energy Storage: average balance$16,241
Peer median$72,907
Eos Energy Storage: admin expenses ÷ assets1.77%
Peer median0.20%

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 $4.2M at the end of plan year 2022 to $10.7M at the end of plan year 2024.

$4.2M2022$7.1M2023$10.7M2024
End-of-year figures from each plan year's Form 5500 filing for the Eos Energy Storage plan.
Plan yearParticipantsAssetsEmployer contributionsPer participantAdmin expense ratioMatch formulaFiling
2024656$10.7M$1.4M$2,0791.77%Not publishedForm 5500 ↗
2023572$7.1M$999K$1,7501.84%Not publishedForm 5500 ↗
2022395$4.2M$811K$2,0692.48%Not publishedForm 5500 ↗

Common questions

Does Eos Energy Storage match 401(k) contributions?

The match terms for the Eos Energy Storage LLC Retirement Savings Plan have not been published from its filing yet. The plan year 2024 filing reports $1.4M in employer contributions, about $2,079 per participant. That total includes any match and profit-sharing; it is not a match formula.

When is the Eos Energy Storage 401(k) match vested?

The vesting schedule for the Eos Energy Storage LLC Retirement Savings Plan is not in the data published so far. Your Summary Plan Description states it.

Who manages the Eos Energy Storage 401(k)?

The recordkeeper listed on Schedule C of the plan year 2024 filing is Principal Life Insurance Company. The plan administrator is Eos Energy Storage LLC.

I left Eos Energy Storage. How do I find my old 401(k)?

Your account stays in the plan until you move it. Contact the plan administrator (Eos Energy Storage LLC, (732) 225-8400) or the recordkeeper, Principal Life Insurance Company. The Eos Energy Storage old 401(k) page lists the contacts from every plan filing. Find an old Eos Energy Storage 401(k)

Data from the public Form 5500 annual reports Eos Energy Storage 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 Eos Energy Storage. Not financial advice. Report a correction · Methodology