Companies / Ironwood Pharmaceuticals Inc
Ironwood Pharmaceuticals Inc
Financials · FY2025
Ownership
165.2M shares outstanding · as of Jul 31, 2026
Ownership
| Insiders | 8.25% | 13,633,996 |
| 10%+ / strategic | 19.91% | 32,895,674 |
| Institutions | 86.10% | 142,273,309 |
| Public float | 0.00% | 0 |
Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 7
View all →| Insider | % of shares | Shares |
|---|---|---|
Denner Alexander JDirector | 5.76% | 9,512,490 |
MCCOURT Thomas ACEOChief Executive Officer · Director | 1.15% | 1,898,838 |
Shetzline MichaelSVP, CMO, Head-Res&Drug | 0.40% | 658,037 |
John MinardoChief Legal Officer | 0.30% | 500,498 |
Silver RonaldPrincipal Accounting Officer | 0.25% | 416,570 |
Gaskins Tammi LChief Commercial Officer | 0.21% | 350,350 |
Martini Gregory S.Chief Financial Officer | 0.18% | 297,213 |
Institutional holders 209
View all →| Holder | Value | % of shares |
|---|---|---|
| $74.89M | 10.77% | |
| $54.00M | 9.70% | |
| $53.78M | 9.66% | |
| $53.65M | 9.63% | |
| $38.83M | 6.97% | |
| $37.09M | 5.33% | |
| $28.29M | 4.88% | |
| $26.45M | 4.56% | |
| $20.53M | 3.54% | |
| $16.77M | 3.01% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | BlackRock, Inc. 13F manager | Add | Common stock | $21.07M | +5.0M +39.14% | 17,788,557 10.77% of shares | medium |
| Q2 2026 as of | State Street Corporation 13F manager | Add | Common stock | $18.52M | +4.4M +99.71% | 8,809,601 5.33% of shares | medium |
| Q1 2026 as of | Two Sigma Investments, LP 13F manager | Add | Common stock | $10.51M | +3.0M +104.97% | 5,848,276 3.54% of shares | medium |
| Q1 2026 as of | Arrowstreet Capital, Limited Partnership 13F manager | Add | Common stock | $10.48M | +3.0M +724.45% | 3,397,242 2.06% of shares | medium |
| Q1 2026 as of | AQR Capital Management, LLC 13F manager | Add | Common stock | $9.87M | +2.8M +59.52% | 7,535,080 4.56% of shares | medium |
| Q1 2026 as of | Geode Capital Management, LLC 13F manager | Add | Common stock | $3.23M | +920K +25.39% | 4,543,522 2.75% of shares | low |
| Q1 2026 as of | Lazard Asset Management LLC 13F manager | Trim | Common stock | $-2.49M | -710K -70.99% | 290,189 0.18% of shares | low |
| Q1 2026 as of | Victory Capital Management, Inc. 13F manager | Add | Common stock | $2.44M | +695K +3852.93% | 713,187 0.43% of shares | low |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| State Street Corporation | Passive13G | — |
| Vanguard Group Inc | Passive13G/A | — |
| Armistice Capital, LLC | Passive13G/A | — |
| Renaissance Technologies LLC | Passive13G/A | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| IRWD | — | 46333X108 |