401(k) · DOL Form 5500 · 2024
Mass General Brigham Incorporated 401(k) Plan
Data updated 2026-08-11
- $645M
- Total assets
- 5,146
- Participants
- 98th
- Percentile by assets
- $125,379
- Avg per participant
Official DOL plan name: Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations · Sponsored by Mass General Brigham Incorporated · Massachusetts · Healthcare & Social Assistance
$645M in assets, 5,146 participants
Mass General Brigham Incorporated's Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations reported $645M in total assets and 5,146 participants in its 2024 DOL Form 5500 filing, ranking in the 98th 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.
- 98th percentile by assets (of 123,622 plans)
- #16,536 in Healthcare & Social Assistance (16,916 peers)
Coverage in Massachusetts
Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations covers 5,146 participants in Massachusetts, 7.8x the typical Massachusetts plan (state average ~659 per filing). Assets: $645M.
- $645M
- total plan assets (2024 EOY)
- 5,146
- covered participants
- 98th
- percentile by assets (of 123,622 plans)
- $125,379
- avg assets per participant
What changed between DOL Form 5500 filings
plan year 2023 → plan year 2024
- Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations reported net income fell from $85M in the plan year 2023 filing to $16M in the plan year 2024 filing.
- Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations reported participants fell from 5,766 in the plan year 2023 filing to 5,146 in the plan year 2024 filing.
- Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations end-of-year assets rose from $629M in the plan year 2023 filing to $645M in the plan year 2024 filing.
Participants vs Massachusetts filers
In Massachusetts, the average filing covers about 659 participants across 4,265 plans. Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations reports 5,146 participants - 7.8x that state average ($645M EOY assets).
Massachusetts filing particulars
| Total Assets (Beginning of Year) | $629M |
|---|---|
| Net Assets (End of Year) | $645M |
| Net Income | $16M |
| Employer EIN | 043230035 |
| Plan Effective Date | 1996-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Mass General Brigham Incorporated)
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 3 | 136,155 | $21.7B |
| 2023 | 3 | 138,723 | $25.9B |
| 2024 | 3 | 142,326 | $29.0B |
Nearby 401(k) Plans in Massachusetts
Peer 401(k) plans, same state, same plan type, ranked by total assets.
Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations vs. nearby 401(k) plans in Massachusetts, assets vs. participants
- Fidelity Retirement Savings Plan $34.2B · 66,907
- Liberty Mutual 401(k) Plan $11.4B · 34,618
- Massachusetts Institute of Technology Supplemental 401(k) Plan $7.7B · 14,762
- Boston Scientific Corporation 401(k) Retirement Savings Plan $6.8B · 20,639
- State Street Salary Savings Program $6.5B · 12,777
Scale composition for Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations
Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations reports $645M in end-of-year assets across 5,146 participants (0.005% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.005% of 93,925,755 covered participants) - about $125,379 per participant (91% of the national average assets-per-participant) . Net income for plan year 2024 was $16M.
This plan identity (EIN 043230035, plan #500) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $544M to $645M (+18.6%) while covered participants moved from 6,104 to 5,146 . Single-year sparse filers cannot show that trail.
| Plan year | Participants | EOY assets | Filing |
|---|---|---|---|
| 2022 | 6,104 | $544M | Open filing |
| 2023 | 5,766 | $629M | Open filing |
| 2024 · index core | 5,146 | $645M | This page |
The same sponsor also keeps 2 other index-core plans on PlainRetire:
- Consolidated 403(b) Program of Mass General Brigham and Member Organizations (Profit Sharing, $16.7B, 76,559 participants)
- Consolidated Cash Balance Program of Mass General Brigham and Member Organizations (Defined Benefit (Pension), $11.6B, 60,621 participants)
Similar-Sized 401(k) Plans Nationally
401(k) plans in other states closest to Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations by total assets, not by location.
- Hensel Phelps Salary Retirement Plan (CO) $646M · 3,081
- Tpg Global, LLC 401(k) Profit Sharing Plan (TX) $645M · 885
- V2x 401(k) Retirement Plan (MS) $644M · 6,644
- Naes Corporation Retirement & 401(k) Plan (WA) $644M · 2,285
Frequently Asked Questions
How did Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations assets move in 2024? ▼
How have Mass General Brigham Incorporated plan assets changed over time? ▼
Where does Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations rank by assets among Form 5500 filers? ▼
Which 401(k) plans are similar in size to Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations? ▼
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Filing takeaways
Ways to act on Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations's numbers.
- By total assets, Consolidated 401(a) and 401(k) Program of Mass General Brigham and Member Organizations 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
- Mass General Brigham Incorporated's sponsor-wide assets have grown 33.5% since 2022 across 3 plan years on file. More Healthcare & Social Assistance plans