401(k) · DOL Form 5500 · 2022

Flagship Pioneering, Inc. 401(k) Plan

Data updated 2026-08-25

$33M
Total assets Below avg plan size
256
Participants Below avg headcount
84th
Percentile by assets National rank
$130,688
Avg per participant Near avg balance/head
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Official DOL plan name: Flagship Pioneering 401(k) Profit Sharing Plan · Sponsored by Flagship Pioneering, Inc. · Massachusetts · Professional & Technical Services

$33M in assets, 256 participants

Flagship Pioneering, Inc.'s Flagship Pioneering 401(k) Profit Sharing Plan reported $33M in total assets and 256 participants in its 2022 DOL Form 5500 filing, ranking in the 84th 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.

  • #18,278 in Professional & Technical Services (21,562 peers)

Coverage in Massachusetts

Flagship Pioneering 401(k) Profit Sharing Plan covers 256 participants in Massachusetts, about 39% of the average Massachusetts filer (state average ~659 per filing). Assets: $33M.

#18,278
in Professional & Technical Services (21,562 peers)
-2.3%
assets change YoY
0.3×
vs typical plan assets (national mean)

The plan reported a net loss of $795K for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

Flagship Pioneering 401(k) Profit Sharing Plan's outsized position by total assets

Flagship Pioneering 401(k) Profit Sharing Plan vs every filed plan by assets

End-of-year total assets · plan year 2022 · DOL Form 5500

$33,456,062 Top 16% higher than 84% of 139,123 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2022

Flagship Pioneering 401(k) Profit Sharing 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. Flagship Pioneering 401(k) Profit Sharing Plan sits mid-pack in the medium band (256 participants).

Published 5500 schedule card

Filing strip 752992246 · Flagship Pioneering, Inc. PY 2022 · 401(k)

Flagship Pioneering 401(k) Profit Sharing Plan · $33M · 256 · 84th

  • VS-ST $33M
  • VS-ST 256
  • VS-ST 84th
  • VS-ST 401(k)
  • VS-ST near Rainier Trust 401(k) Retirement Plan
  • VS-ST ind #18278

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 →

Flagship Pioneering 401(k) Profit Sharing Plan in the asset neighbourhood

Flagship Pioneering 401(k) Profit Sharing PlanFlagship Pioneering 401(k) P…$33MRainier Trust 401(k) Retirement PlanRainier Trust 401(k) Retirem…$33MDelaware Valley Floral Group, Inc. Savings & Investment PlanDelaware Valley Floral Group…$33MReddy Ice LLC 401(k) Plan$33MBrayman Construction Corporation Savings & Profit Sharing PlanBrayman Construction Corpora…$33M
End-of-year total assets ($M) among Flagship Pioneering 401(k) Profit Sharing Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2022.

Massachusetts filing particulars

Total Assets (Beginning of Year)$34M
Net Assets (End of Year)$33M
Net Income-$795K
Employer EIN752992246
Plan Effective Date2002-09-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Flagship Pioneering, Inc.)

Sponsor-wide plan assets over time

All Flagship Pioneering, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$65M 94.1656283396414% vs 2022
2024 filing year
$30M$40M$50M$60M$70M 202220232024 $33.5M $65M ▲ +94.1%
Year Plans Participants Total Assets
2022 1 256 $33M
2023 1 357 $48M
2024 1 434 $65M

Nearby 401(k) Plans in Massachusetts

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Flagship Pioneering 401(k) Profit Sharing Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -200000200004000060000 -100102030 Total assets ($B) Participants Flagship Pioneering 401(k) Profit Sharing Plan, Total assets ($B): 0.033456062 · Participants: 256Flagship Pioneering 401(k) Profit Sharing PlanFidelity Retirement Savings Plan, Total assets ($B): 22.953563448 · Participants: 52036Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 8.79802945 · Participants: 32843Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 5.810585521 · Participants: 13690Massachusetts Institute of Technology Supplemental 401(k) PlanPhilips North America 401(k) Plan, Total assets ($B): 5.180251859 · Participants: 19750Philips North America 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 4.853752256 · Participants: 18359Boston Scientific Corporation 401(k) Retirement Savings Plan
Flagship Pioneering 401(k) Profit Sharing Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Flagship Pioneering 401(k) Profit Sharing Plan side-by-side with 3 peers →

Flagship Pioneering 401(k) Profit Sharing Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Rainier Trust 401(k) Retirement Plan in WA ($33M); by covered participants it is Pacific Gateway Concessions, LLC 401(k) Plan in CA (256 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (256 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.

Frequently Asked Questions

How did Flagship Pioneering 401(k) Profit Sharing Plan assets move in 2022? ▼
Flagship Pioneering 401(k) Profit Sharing Plan edged down modestly - down 2.3% during 2022, from $34M to $33M. Reported net income was -$795K.
How have Flagship Pioneering, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Flagship Pioneering, Inc.'s sponsor-wide assets grew 94.2%, from $33M to $65M.
Where does Flagship Pioneering 401(k) Profit Sharing Plan rank by assets among Form 5500 filers? ▼
Flagship Pioneering 401(k) Profit Sharing Plan ranks in the 84th percentile by end-of-year assets among 139,126 plans that reported assets for plan year 2022 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Flagship Pioneering 401(k) Profit Sharing Plan? ▼
Among 401(k) plans in other states, the closest by assets is Rainier Trust 401(k) Retirement Plan in WA ($33M, 710 participants).
Which 401(k) plans cover a similar participant headcount to Flagship Pioneering 401(k) Profit Sharing Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Pacific Gateway Concessions, LLC 401(k) Plan in CA (256 participants, $2M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2022.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 752992246.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.