Ironwood Pharmaceuticals, Inc. (IRWD) Institutional Ownership & Insider Trading

212 institutions reported holding Ironwood Pharmaceuticals, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 18 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

IRWDIronwood Pharmaceuticals, Inc.Follow IRWD — free

Drug Manufacturers - Specialty & Generic · Healthcare

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Market cap: 571.7M
P/E TTM: 4.5
Dividend yield: —
52-week: —
Next earnings: 29 Oct, in 5 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

212 institutions held 97.2% of the shares. Across filers that reported both quarters, shares held changed -0.4%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	212	161	-0.4%	69	21	77	30
Mar 26	224	160	+7.8%	83	45	53	20
Dec 25	196	154	+4.0%	53	46	40	16
Sep 25	163	149	+1.7%	46	26	41	18
Jun 25	155	146	-5.8%	58	19	50	61
Mar 25	200	155	-5.3%	71	28	59	49
Dec 24	221	164	-0.0%	69	28	73	35
Sep 24	219	163	-7.9%	62	32	72	39

Ironwood Pharmaceuticals, Inc. — questions

Who owns Ironwood Pharmaceuticals, Inc. stock?: 212 institutions reported Ironwood Pharmaceuticals, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: BlackRock, Inc. (10.8%), ARMISTICE CAPITAL, LLC (8.4%), Sarissa Capital Management LP (5.6%).
Are Ironwood Pharmaceuticals, Inc. insiders buying or selling?: 18 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from Ironwood Pharmaceuticals, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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