401(k) · DOL Form 5500 · 2022
Mercury Systems, Inc. 401(k) Plan
Data updated 2026-08-11
- $370M
- Total assets
- 2,028
- Participants
- 97th
- Percentile by assets
- $182,288
- Avg per participant
Official DOL plan name: Mercury Employees Retirement Investment Trust · Sponsored by Mercury Systems, Inc. · Massachusetts · Professional & Technical Services
$370M in assets, 2,028 participants
Mercury Systems, Inc.'s Mercury Employees Retirement Investment Trust reported $370M in total assets and 2,028 participants in its 2022 DOL Form 5500 filing, ranking in the 97th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.
- 97th percentile by assets (of 139,126 plans)
- #21,146 in Professional & Technical Services (21,562 peers)
Coverage in Massachusetts
Mercury Employees Retirement Investment Trust covers 2,028 participants in Massachusetts, 3.1x the typical Massachusetts plan (state average ~659 per filing). Assets: $370M.
- $370M
- total plan assets (2022 EOY)
- 2,028
- covered participants
- 97th
- percentile by assets (of 139,126 plans)
- $182,288
- avg assets per participant
The plan reported a net loss of $51M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.
Where Mercury Employees Retirement Investment Trust sits by total assets
Mercury Employees Retirement Investment Trust vs every filed plan by assets
End-of-year total assets · plan year 2022 · DOL Form 5500
$369,680,179 Top 3% higher than 97% of 139,123 filed plans
Dashed line + filled bar = this entry, among filed plans.
Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2022
Participants vs Massachusetts filers
In Massachusetts, the average filing covers about 659 participants across 4,265 plans. Mercury Employees Retirement Investment Trust reports 2,028 participants - 3.1x that state average ($370M EOY assets).
Massachusetts filing particulars
| Total Assets (Beginning of Year) | $415M |
|---|---|
| Net Assets (End of Year) | $370M |
| Net Income | -$51M |
| Employer EIN | 042741391 |
| Plan Effective Date | 1987-07-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Mercury Systems, Inc.)
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 1 | 2,028 | $370M |
| 2023 | 1 | 2,337 | $440M |
| 2024 | 1 | 2,388 | $476M |
Nearby 401(k) Plans in Massachusetts
Peer 401(k) plans, same state, same plan type, ranked by total assets.
Mercury Employees Retirement Investment Trust vs. nearby 401(k) plans in Massachusetts, assets vs. participants
- Fidelity Retirement Savings Plan $23.0B · 52,036
- Liberty Mutual 401(k) Plan $8.8B · 32,843
- Massachusetts Institute of Technology Supplemental 401(k) Plan $5.8B · 13,690
- Philips North America 401(k) Plan $5.2B · 19,750
- Boston Scientific Corporation 401(k) Retirement Savings Plan $4.9B · 18,359
Similar-Sized 401(k) Plans Nationally
401(k) plans in other states closest to Mercury Employees Retirement Investment Trust by total assets, not by location.
- American National 401(k) Plan (TX) $370M · 4,550
- Hallmark Affiliates Employee Savings Plan (MO) $370M · 2,604
- Firmenich Retirement Savings Plan (NJ) $369M · 1,488
- R1 Rcm Inc. 401(k) Plan (UT) $369M · 10,832
Frequently Asked Questions
How did Mercury Employees Retirement Investment Trust assets move in 2022? ▼
How have Mercury Systems, Inc. plan assets changed over time? ▼
Where does Mercury Employees Retirement Investment Trust rank by assets among Form 5500 filers? ▼
Which 401(k) plans are similar in size to Mercury Employees Retirement Investment Trust? ▼
Next read for Mercury Employees Retirement Investment …
Filing takeaways
Ways to act on Mercury Employees Retirement Investment Trust's numbers.
- By total assets, Mercury Employees Retirement Investment Trust ranks in the top 5% of all filed plans by assets. See the largest plans
- Compare it side-by-side against 3 similar 401(k) plans in Massachusetts. Compare plans
- Mercury Systems, Inc.'s sponsor-wide assets have grown 28.7% since 2022 across 3 plan years on file. More Professional & Technical Services plans