401(k) · DOL Form 5500 · 2023

Bluebird Bio, Inc. 401(k) Plan

Data updated 2026-08-25

$77M
Total assets Below avg plan size
310
Participants Below avg headcount
89th
Percentile by assets National rank
$247,747
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

$77M in assets, 310 participants

Bluebird Bio, Inc.'s Bluebird Bio, Inc. 401(k) Plan reported $77M in total assets and 310 participants in its 2023 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.

  • #18,412 in Professional & Technical Services (20,321 peers)

Coverage in Massachusetts

Bluebird Bio, Inc. 401(k) Plan covers 310 participants in Massachusetts, about 47% of the average Massachusetts filer (state average ~659 per filing). Assets: $77M.

#18,412
in Professional & Technical Services (20,321 peers)
+24.4%
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 2023 · DOL Form 5500

$76,801,544 Top 11% higher than 89% of 127,068 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 2023

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

Plan-year 2023 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 (310 participants).

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Bluebird Bio, Inc. 401(k) Plan reported net income rose from -$15M in the plan year 2022 filing to $15M in the plan year 2023 filing.
  • Bluebird Bio, Inc. 401(k) Plan reported participants fell from 508 in the plan year 2022 filing to 310 in the plan year 2023 filing.
  • Bluebird Bio, Inc. 401(k) Plan end-of-year assets rose from $62M in the plan year 2022 filing to $77M in the plan year 2023 filing.

See the national 2022→2023 release diff →

DOL schedule card

Filing strip 133680878 · Bluebird Bio, Inc. PY 2023 · 401(k)

Bluebird Bio, Inc. 401(k) Plan · $77M · 310 · 89th

  • 5500 $77M
  • 5500 310
  • 5500 89th
  • 5500 401(k)
  • 5500 near Security National Corporation Retirement Savings Plan & Trust
  • 5500 ind #18412

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

Automated Financial Systems, Inc. 401(k) Salary Reduction PlanAutomated Financial Systems,…$77MNational Seating & Mobility, Inc. 401(k) PlanNational Seating & Mobility,…$77MBluebird Bio, Inc. 401(k) PlanBluebird Bio, Inc. 401(k) Pl…$77MSecurity National Corporation Retirement Savings Plan & TrustSecurity National Corporatio…$77MSalt River Materials Group 401(k) PlanSalt River Materials Group 4…$77M
End-of-year total assets ($M) among Bluebird Bio, Inc. 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Massachusetts filing particulars

Total Assets (Beginning of Year)$62M
Net Assets (End of Year)$77M
Net Income$15M
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): 0.076801544 · Participants: 310Bluebird Bio, Inc. 401(k) PlanFidelity Retirement Savings Plan, Total assets ($B): 28.649852331 · Participants: 62289Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 10.556596852 · Participants: 37052Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 6.829912863 · Participants: 14094Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 5.786107181 · Participants: 19881Boston Scientific Corporation 401(k) Retirement Savings PlanPhilips North America 401(k) Plan, Total assets ($B): 5.779286156 · Participants: 19120Philips North America 401(k) Plan
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 Security National Corporation Retirement Savings Plan & Trust in IA ($77M); by covered participants it is Murphy Employee Profit Sharing and 401(k) Plan in MO (310 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (310 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. 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 2023? ▼
Bluebird Bio, Inc. 401(k) Plan grew sharply - up 24.4% during 2023, from $62M to $77M. Reported net income was $15M.
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 127,072 plans that reported assets for plan year 2023 (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 Security National Corporation Retirement Savings Plan & Trust in IA ($77M, 281 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 Murphy Employee Profit Sharing and 401(k) Plan in MO (310 participants, $67M in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

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.