401(k) · DOL Form 5500 · 2022

Ironwood Pharmaceuticals, Inc. 401(k) Plan

Data updated 2026-08-25

$69M
Total assets Below avg plan size
220
Participants Below avg headcount
91st
Percentile by assets National rank
$315,779
Avg per participant High balance/head
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Official DOL plan name: Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan · Sponsored by Ironwood Pharmaceuticals, Inc. · Massachusetts · Professional & Technical Services

$69M in assets, 220 participants

Ironwood Pharmaceuticals, Inc.'s Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan reported $69M in total assets and 220 participants in its 2022 DOL Form 5500 filing, ranking in the 91st 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.

  • #19,762 in Professional & Technical Services (21,562 peers)

Coverage in Massachusetts

Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan covers 220 participants in Massachusetts, about 33% of the average Massachusetts filer (state average ~659 per filing). Assets: $69M.

#19,762
in Professional & Technical Services (21,562 peers)
-18.5%
assets change YoY
0.7×
vs typical plan assets (national mean)

The plan reported a net loss of $16M for the year, a single-year figure driven by markets and benefit payments, not a measure of plan health.

Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan's outsized position by total assets

Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan vs every filed plan by assets

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

$69,471,452 Top 9% higher than 91% 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

Ironwood Pharmaceuticals, Inc. 401(k) Savings 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. Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan sits mid-pack in the medium band (220 participants).

EBSA filing schedule strip

Filing strip 043404176 · Ironwood Pharmaceuticals, Inc. PY 2022 · 401(k)

Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan · $69M · 220 · 91st

  • EIN $69M
  • RANK 220
  • PHOTO 91st
  • IND 401(k)
  • EOY near Harmon City, Inc. 401(k) Retirement Savings Plan
  • 5500 ind #19762

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 →

Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan in the asset neighbourhood

Freeport Lng 401(k) Plan$69MIronwood Pharmaceuticals, Inc. 401(k) Savings PlanIronwood Pharmaceuticals, In…$69MHarmon City, Inc. 401(k) Retirement Savings PlanHarmon City, Inc. 401(k) Ret…$69MTruck Group 401(k) Plan$69MJayco, Inc. 401(k) Savings & Investment Plan & Trust PlanJayco, Inc. 401(k) Savings &…$69M
End-of-year total assets ($M) among Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2022.

Massachusetts filing particulars

Total Assets (Beginning of Year)$85M
Net Assets (End of Year)$69M
Net Income-$16M
Employer EIN043404176
Plan Effective Date1999-01-01
Filing StatusFILING RECEIVED

Sponsor Plan History (Ironwood Pharmaceuticals, Inc.)

Sponsor-wide plan assets over time

All Ironwood Pharmaceuticals, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$88M 26.37423498791993% vs 2022
2024 filing year
$60M$70M$80M$90M 202220232024 $69.5M $87.8M ▲ +26.4%
Year Plans Participants Total Assets
2022 1 220 $69M
2023 1 219 $79M
2024 1 216 $88M

Nearby 401(k) Plans in Massachusetts

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

Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. -200000200004000060000 -100102030 Total assets ($B) Participants Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan, Total assets ($B): 0.069471452 · Participants: 220Ironwood Pharmaceuticals, Inc. 401(k) Savings 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
Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan side-by-side with 3 peers →

Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Harmon City, Inc. 401(k) Retirement Savings Plan in UT ($69M); by covered participants it is Barley Snyder Savings Plan in PA (220 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($69M here).

Similar participant headcount

Nearest other-state filings by covered participants (220 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 Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan assets move in 2022? ▼
Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan declined sharply - down 18.5% during 2022, from $85M to $69M. Reported net income was -$16M.
How have Ironwood Pharmaceuticals, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Ironwood Pharmaceuticals, Inc.'s sponsor-wide assets grew 26.4%, from $69M to $88M.
Where does Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan rank by assets among Form 5500 filers? ▼
Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan ranks in the 91st percentile by end-of-year assets among 139,126 plans that reported assets for plan year 2022 (in the top 10% of all filed plans by assets).
Which 401(k) plans are similar in size to Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan? ▼
Among 401(k) plans in other states, the closest by assets is Harmon City, Inc. 401(k) Retirement Savings Plan in UT ($69M, 3,777 participants).
Which 401(k) plans cover a similar participant headcount to Ironwood Pharmaceuticals, Inc. 401(k) Savings Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Barley Snyder Savings Plan in PA (220 participants, $45M 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 043404176.

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.