401(k) · DOL Form 5500 · 2022
2seventy Bio, Inc. 401(k) Plan
Data updated 2026-08-25
- $30M
- Total assets Below avg plan size
- 416
- Participants Below avg headcount
- 83rd
- Percentile by assets National rank
- $72,783
- Avg per participant Below avg balance/head
Official DOL plan name: 2seventy Bio, Inc. 401(k) Plan · Sponsored by 2seventy Bio, Inc. · Massachusetts · Professional & Technical Services
$30M in assets, 416 participants
2seventy Bio, Inc.'s 2seventy Bio, Inc. 401(k) Plan reported $30M in total assets and 416 participants in its 2022 DOL Form 5500 filing, ranking in the 83rd 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.
- #18,012 in Professional & Technical Services (21,562 peers)
Where 2seventy Bio, Inc. 401(k) Plan sits by assets
2seventy Bio, Inc. 401(k) Plan sits in the top quartile of all filed plans by assets, $30M for 416 participants (~$72,783/participant), up 3.3% in 2022.
- #18,012
- in Professional & Technical Services (21,562 peers)
- +3.3%
- assets growth YoY
- 0.3×
- vs typical plan assets (national mean)
2seventy Bio, Inc. 401(k) Plan's outsized position by total assets
2seventy Bio, Inc. 401(k) Plan vs every filed plan by assets
End-of-year total assets · plan year 2022 · DOL Form 5500
$30,277,729 Top 17% higher than 83% 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
2seventy Bio, Inc. 401(k) Plan among mid-size filed plans by headcount
Plan-year 2022 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. 2seventy Bio, Inc. 401(k) Plan sits mid-pack in the medium band (416 participants).
Plan-year Form 5500 strip
Filing strip 863658454 · 2seventy Bio, Inc. PY 2022 · 401(k)
2seventy Bio, Inc. 401(k) Plan · $30M · 416 · 83rd
- IND $30M
- IND 416
- IND 83rd
- IND 401(k)
- IND near Tangram Interiors Employees Retirement Plan
- IND ind #18012
Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Professional & Technical Services retirement plans → · Plans in Massachusetts →
2seventy Bio, Inc. 401(k) Plan in the asset neighbourhood
Scale-class filing particulars (2022)
| Total Assets (Beginning of Year) | $29M |
|---|---|
| Net Assets (End of Year) | $30M |
| Net Income | $959K |
| Employer EIN | 863658454 |
| Plan Effective Date | 2021-11-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (2seventy Bio, Inc.)
Sponsor-wide plan assets over time
All 2seventy Bio, Inc. plans reported in each filing year
- Latest sponsor-wide plan assets
- $32M 6.733421122832562% vs 2022
- 2024 filing year
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 1 | 416 | $30M |
| 2023 | 1 | 413 | $44M |
| 2024 | 1 | 276 | $32M |
Nearby 401(k) Plans in Massachusetts
Peer 401(k) plans, same state, same plan type, ranked by total assets.
- 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
2seventy Bio, Inc. 401(k) Plan's out-of-state 401(k) peers by assets and headcount
Outside Massachusetts, the nearest 401(k) by assets is Tangram Interiors Employees Retirement Plan in CA ($30M); by covered participants it is Cu Employment, Inc. 401(k) Profit Sharing Plan and Trust in AL (416 participants). Same-state nearby plans are listed separately above.
Closest by plan assets
Nearest other-state filings by tot_assets_eoy ($30M here).
Similar participant headcount
Nearest other-state filings by covered participants (416 participants); asset peers above are excluded.
DOL Form 5500 plan year 2022. Asset totals can differ widely at the same headcount; neither axis is a quality rating.