System1 Op 401(k) match, vesting and fees
What System1 Op's 401(k) plan says about matching contributions
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.
| Recordkeeper | Empower Annuity Insurance Co | Schedule C ↗ |
| Independent auditor | Kimberlin Company, PLLC (unmodified opinion, limited scope) | Schedule H ↗ |
| Plan type and status | 401(k) · Active | Form 5500 ↗ |
| Late participant contributions | Reported on the filing | Schedule H ↗ |
How the plan compares
Plan year 2025 medians for 3,569 defined-contribution plans in professional, scientific, and technical services with 100 to 499 participants.
| System1 Op: employer contribution per participant | $6,805 | |
| Peer median | $2,719 |
| System1 Op: average balance | $122,934 | |
| Peer median | $85,424 |
| System1 Op: admin expenses ÷ assets | 0.13% | |
| Peer median | 0.27% |
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 $25.5M at the end of plan year 2021 to $50.3M at the end of plan year 2025.
| Plan year | Participants | Assets | Employer contributions | Per participant | Admin expense ratio | Match formula | Filing |
|---|---|---|---|---|---|---|---|
| 2025 | 432 | $50.3M | $2.8M | $6,805 | 0.13% | Not published | Form 5500 ↗ |
| 2024 | 447 | $41.6M | $2.6M | $6,143 | 0.08% | Not published | Form 5500 ↗ |
| 2023 | 467 | $31.5M | $1.8M | $4,206 | 0.08% | Not published | Form 5500 ↗ |
| 2022 | 471 | $25.1M | $1.7M | $4,050 | 0.06% | Not published | Form 5500 ↗ |
| 2021 | 386 | $25.5M | $1.2M | $3,695 | 0.05% | Not published | Form 5500 ↗ |
Common questions
Does System1 Op match 401(k) contributions?
The match terms for the System1 LLC 401(k) Plan have not been published from its filing yet. The plan year 2025 filing reports $2.8M in employer contributions, about $6,805 per participant. That total includes any match and profit-sharing; it is not a match formula.
When is the System1 Op 401(k) match vested?
The vesting schedule for the System1 LLC 401(k) Plan is not in the data published so far. Your Summary Plan Description states it.
Who manages the System1 Op 401(k)?
The recordkeeper listed on Schedule C of the plan year 2025 filing is Empower Annuity Insurance Co. The plan administrator is System1 Op Co, LLC.
I left System1 Op. How do I find my old 401(k)?
Your account stays in the plan until you move it. Contact the plan administrator (System1 Op Co, LLC, (310) 748-2552) or the recordkeeper, Empower Annuity Insurance Co. The System1 Op old 401(k) page lists the contacts from every plan filing. Find an old System1 Op 401(k)
Data from the public Form 5500 annual reports System1 Op filed with the U.S. Department of Labor (plan years 2021 and 2022 and 2023 and 2024 and 2025) 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 System1 Op. Not financial advice. Report a correction · Methodology