401(k) · DOL Form 5500 · 2024

Bluebird Bio, Inc. 401(k) Plan

Data updated 2026-08-25

$83M
Total assets Below avg plan size
395
Participants Below avg headcount
89th
Percentile by assets National rank
$209,120
Avg per participant Above avg balance/head
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Official DOL plan name: Bluebird Bio, Inc. 401(k) Plan · Sponsored by Bluebird Bio, Inc. · Massachusetts · Professional & Technical Services

$83M in assets, 395 participants

Bluebird Bio, Inc.'s Bluebird Bio, Inc. 401(k) Plan reported $83M in total assets and 395 participants in its 2024 DOL Form 5500 filing, ranking in the 89th 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.

  • #18,173 in Professional & Technical Services (20,173 peers)

Where Bluebird Bio, Inc. 401(k) Plan sits by assets

Bluebird Bio, Inc. 401(k) Plan sits in the top quartile of all filed plans by assets, $83M for 395 participants (~$209,120/participant), up 7.6% in 2024.

#18,173
in Professional & Technical Services (20,173 peers)
+7.6%
assets growth YoY
0.8×
vs typical plan assets (national mean)

Bluebird Bio, Inc. 401(k) Plan's outsized position by total assets

Bluebird Bio, Inc. 401(k) Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$82,602,567 Top 11% higher than 89% of 123,620 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 2024

Bluebird Bio, Inc. 401(k) Plan among mid-size filed plans by headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Bluebird Bio, Inc. 401(k) Plan sits mid-pack in the medium band (395 participants).

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • Bluebird Bio, Inc. 401(k) Plan reported net income fell from $15M in the plan year 2023 filing to $6M in the plan year 2024 filing.
  • Bluebird Bio, Inc. 401(k) Plan reported participants rose from 310 in the plan year 2023 filing to 395 in the plan year 2024 filing.
  • Bluebird Bio, Inc. 401(k) Plan end-of-year assets rose from $77M in the plan year 2023 filing to $83M in the plan year 2024 filing.

See the national 2023→2024 release diff →

Plan-year Form 5500 strip

Filing strip 133680878 · Bluebird Bio, Inc. PY 2024 · 401(k)

Bluebird Bio, Inc. 401(k) Plan · $83M · 395 · 89th

  • EBSA $83M
  • PART 395
  • TYPE 89th
  • NET 401(k)
  • BOOK near Harris 401(k) Profit Sharing Plan
  • VS-ST ind #18173

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 →

Bluebird Bio, Inc. 401(k) Plan in the asset neighbourhood

Southeastern Container, Inc. Retirement Savings PlanSoutheastern Container, Inc.…$83MElection Systems & Software, LLC 401(k) PlanElection Systems & Software,…$83MHarris 401(k) Profit Sharing PlanHarris 401(k) Profit Sharing…$83MBluebird Bio, Inc. 401(k) PlanBluebird Bio, Inc. 401(k) Pl…$83MCohn Family Corporate Profit Sharing PlanCohn Family Corporate Profit…$83M
End-of-year total assets ($M) among Bluebird Bio, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

Scale-class filing particulars (2024)

Total Assets (Beginning of Year)$77M
Net Assets (End of Year)$83M
Net Income$6M
Employer EIN133680878
Plan Effective Date1997-07-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Bluebird Bio, Inc.)

Sponsor-wide plan assets over time

All Bluebird Bio, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$83M 33.77436745436213% vs 2022
2024 filing year
$50M$60M$70M$80M$90M 202220232024 $61.8M $82.6M ▲ +33.8%
Year Plans Participants Total Assets
2022 1 508 $62M
2023 1 310 $77M
2024 1 395 $83M

Nearby 401(k) Plans in Massachusetts

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

Bluebird Bio, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -20000020000400006000080000 -10010203040 Total assets ($B) Participants Bluebird Bio, Inc. 401(k) Plan, Total assets ($B): 0.082602567 · Participants: 395Bluebird Bio, Inc. 401(k) PlanFidelity Retirement Savings Plan, Total assets ($B): 34.201609937 · Participants: 66907Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 11.352606499 · Participants: 34618Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 7.720373045 · Participants: 14762Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 6.775289067 · Participants: 20639Boston Scientific Corporation 401(k) Retirement Savings PlanState Street Salary Savings Program, Total assets ($B): 6.532301643 · Participants: 12777State Street Salary Savings Program
Bluebird Bio, Inc. 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Bluebird Bio, Inc. 401(k) Plan side-by-side with 3 peers →

Bluebird 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 Harris 401(k) Profit Sharing Plan in MN ($83M); by covered participants it is James a. Scott & Son, Inc. Retirement Savings Plan in VA (395 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (395 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Bluebird Bio, Inc. 401(k) Plan assets move in 2024? ▼
Bluebird Bio, Inc. 401(k) Plan grew at a solid clip - up 7.6% during 2024, from $77M to $83M. Reported net income was $6M.
How have Bluebird Bio, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Bluebird Bio, Inc.'s sponsor-wide assets grew 33.8%, from $62M to $83M.
Where does Bluebird Bio, Inc. 401(k) Plan rank by assets among Form 5500 filers? ▼
Bluebird Bio, Inc. 401(k) Plan ranks in the 89th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (in the top quartile of all filed plans by assets).
Which 401(k) plans are similar in size to Bluebird Bio, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Harris 401(k) Profit Sharing Plan in MN ($83M, 631 participants).
Which 401(k) plans cover a similar participant headcount to Bluebird Bio, Inc. 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is James a. Scott & Son, Inc. Retirement Savings Plan in VA (395 participants, $24M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 133680878.

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.