401(k) · DOL Form 5500 · 2022

Rubius Therapeutics, Inc. 401(k) Plan

Data updated 2026-08-25

$12M
Total assets Small plan by assets
269
Participants Below avg headcount
68th
Percentile by assets National rank
$44,140
Avg per participant Low balance/head
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Official DOL plan name: Rubius Therapeutics 401(k) Plan · Sponsored by Rubius Therapeutics, Inc. · Massachusetts · Manufacturing

$12M in assets, 269 participants

Rubius Therapeutics, Inc.'s Rubius Therapeutics 401(k) Plan reported $12M in total assets and 269 participants in its 2022 DOL Form 5500 filing, ranking in the 68th 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.

  • #11,632 in Manufacturing (20,602 peers)

Coverage in Massachusetts

Rubius Therapeutics 401(k) Plan covers 269 participants in Massachusetts, about 41% of the average Massachusetts filer (state average ~659 per filing). Assets: $12M.

#11,632
in Manufacturing (20,602 peers)
-31.5%
assets change YoY

The plan reported a net loss of $5M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

Rubius Therapeutics 401(k) Plan's outsized position by total assets

Rubius Therapeutics 401(k) Plan vs every filed plan by assets

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

$11,873,707 Top 32% higher than 68% 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

Rubius Therapeutics 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. Rubius Therapeutics 401(k) Plan sits mid-pack in the medium band (269 participants).

Form 5500 schedule snapshot

Filing strip 462688109 · Rubius Therapeutics, Inc. PY 2022 · 401(k)

Rubius Therapeutics 401(k) Plan · $12M · 269 · 68th

  • EIN $12M
  • RANK 269
  • PHOTO 68th
  • IND 401(k)
  • EOY near Alkeon Capital Management, LLC 401(k)/Profit Sharing Plan
  • 5500 ind #11632

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 Manufacturing retirement plans → · Plans in Massachusetts →

Rubius Therapeutics 401(k) Plan in the asset neighbourhood

Rubius Therapeutics 401(k) PlanRubius Therapeutics 401(k) P…$12MAlkeon Capital Management, LLC 401(k)/Profit Sharing PlanAlkeon Capital Management, L…$12MSunrise Medical Management, L.L.C. Retirement PlanSunrise Medical Management, …$12MProspect Mold and Die Company Thrift Incentive PlanProspect Mold and Die Compan…$12MHamel Group 401(k) Profit Sharing PlanHamel Group 401(k) Profit Sh…$12M
End-of-year total assets ($M) among Rubius Therapeutics 401(k) Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2022.

Massachusetts filing particulars

Total Assets (Beginning of Year)$17M
Net Assets (End of Year)$12M
Net Income-$5M
Employer EIN462688109
Plan Effective Date2018-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Rubius Therapeutics, Inc.)

Sponsor-wide plan assets over time

All Rubius Therapeutics, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$42K 99.64290848679354% vs 2022
2023 filing year
$0M$5M$10M$15M 20222023 $11.9M $0.04M ▼ -99.7%
Year Plans Participants Total Assets
2022 1 269 $12M
2023 1 N/A $42K

Nearby 401(k) Plans in Massachusetts

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

Rubius Therapeutics 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -200000200004000060000 -100102030 Total assets ($B) Participants Rubius Therapeutics 401(k) Plan, Total assets ($B): 0.011873707 · Participants: 269Rubius Therapeutics 401(k) 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
Rubius Therapeutics 401(k) Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Rubius Therapeutics 401(k) Plan side-by-side with 3 peers →

Rubius Therapeutics 401(k) Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Alkeon Capital Management, LLC 401(k)/Profit Sharing Plan in NY ($12M); by covered participants it is Werner Affiliated Companies Employees Savings Trust in NE (269 participants). Same-state nearby plans are listed separately above.

Similar participant headcount

Nearest other-state filings by covered participants (269 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 Rubius Therapeutics 401(k) Plan assets move in 2022? ▼
Rubius Therapeutics 401(k) Plan contracted severely - down 31.5% during 2022, from $17M to $12M. Reported net income was -$5M.
How have Rubius Therapeutics, Inc. plan assets changed over time? ▼
Across 2 plan years on file (2022-2023), Rubius Therapeutics, Inc.'s sponsor-wide assets declined 99.6%, from $12M to $42K.
Which 401(k) plans are similar in size to Rubius Therapeutics 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by assets is Alkeon Capital Management, LLC 401(k)/Profit Sharing Plan in NY ($12M, 74 participants).
Which 401(k) plans cover a similar participant headcount to Rubius Therapeutics 401(k) Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Werner Affiliated Companies Employees Savings Trust in NE (269 participants, $12M 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 462688109.

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.