EntityWire

EntityWire / EIN 04-3404176

Employer with a benefit plan

IRONWOOD PHARMACEUTICALS, INC.

EIN 04-3404176. What DOL Form 5500 filings (EFAST2) and SEC EDGAR company filings say about this entity, with the source and date on every fact. Latest record 2026-08-14.

Employer with a benefit plan ยท SEC filer

IRONWOOD PHARMACEUTICALS, INC.

100 SUMMER STREET, BOSTON, MA 02110

EIN

04-3404176

SEC CIK

0001446847

SEC · 2026-08-14

Industry (SIC)

Pharmaceutical Preparations (2834)

SEC · 2026-08-14

State of incorporation

DE

SEC · 2026-08-14

Ticker

IRWD

SEC · 2026-08-14

Latest SEC filing

SCHEDULE 13G/A 2026-08-14

SEC · 2026-08-14

Benefit plan 1, 2024 filing

IRONWOOD PHARMACEUTICALS, INC. 401(K) SAVINGS PLAN

DOL · 2025-10-14

Participants (start of year)

474

DOL · 2025-10-14

Plan features

code 2E2F2G2J2K2S2T3D

DOL · 2025-10-14

Plan type

Single-employer plan

DOL · 2025-10-14

Business code (NAICS)

541700

DOL · 2025-10-14

Benefit plan 501, 2024 filing

IRONWOOD PHARMACEUTICALS, INC. HEALTH AND WELFARE PLAN

DOL · 2025-06-13

Participants (start of year)

225

DOL · 2025-06-13

Plan features

code 4A4B4D4E4H4L4Q

DOL · 2025-06-13

Plan type

Single-employer plan

DOL · 2025-06-13

From DOL Form 5500 filings (EFAST2) · SEC EDGAR company filings. Latest record 2026-08-14.

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