Ironwood Pharmaceuticals (IRWD)
Develops gastrointestinal therapies around LINZESS and apraglutide.
$4.53
After-hours close0.00 (0.00%)
At close$4.53(+2.72%)
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13F · 13D/G · Form 4
| Institutions | ≈ 98.82% | 163.30M shares | |
|---|---|---|---|
| 220 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail | |||
| Insiders | 16.48% | 27.24M shares | |
| 17 holders · as of Sep 17, 2026 | |||
| Adds to | 115.30% | ||
165.24M company shares as of Sep 23, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.
These groups come from separate filings that can overlap, so they add to 115.30%; nothing is left for Other.
13F, as of Jun 30, 2026
220 holders · 163.30M shares · 26 new positions · 97 increased · 85 reduced · 39 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 17.79M | 10.77% | +4.43M | Aug 7, 2026 |
| Armistice Capital, LLC | 13.93M | 8.43% | −1.10M | Aug 14, 2026 |
| Sarissa Capital Management LP | 9.19M | 5.56% | 0 | Aug 14, 2026 |
| State Street Corp | 8.81M | 5.33% | +1.35M | Aug 7, 2026 |
| Bank of America Corp /DE/ | 8.68M | 5.26% | +896 | Aug 14, 2026 |
| Renaissance Technologies LLC | 7.99M | 4.84% | −67.8K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 6.61M | 4.00% | +511.1K | Aug 13, 2026 |
| AQR Capital Management LLC | 6.47M | 3.91% | −1.07M | Aug 14, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Armistice Capital, LLC | 9.94% | 16.15M | 13G | Aug 15, 2025 |
| Pacer US Small Cap Cash Cows ETF | 7.31% | 11.71M | 13G | May 2, 2025 |
| BlackRock, Inc. | 7.10% | 11.28M | 13G | Mar 7, 2025 |
| State Street Corporation | 6.20% | 9.92M | Oct 16, 2024 | |
| Bank of America Corp /DE/ | 6.10% | 9.96M | 13G | Apr 27, 2026 |
| Alexander J. Dennerincl. Sarissa Capital Management LP | 5.80% | 9.44M | 13D | Mar 19, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Jul 7, 2026 | Ronald Silverofficer: PFO & PAO | Sale | 127,890 | $4.52 | 313,680 |
| Jun 16, 2026 | Julie McHughdirector | Sale | 21,571 | $3.73 | 250,749 |
| Mar 17, 2026 | Alexander J. Dennerdirector | Sale · 2 lots | 6,730,800 | $3.05 | 9,188,635 |
| Feb 24, 2026 | Ronald Silverofficer: Principal Accounting Officer | Sale | 12,621 | $3.66 | 252,636 |
| Feb 23, 2026 | Ronald Silverofficer: Principal Accounting Officer | Sale | 11,552 | $3.81 | 265,257 |
| Feb 24, 2026 | Gregory S. Martiniofficer: Chief Financial Officer | Sale | 11,457 | $3.66 | 160,601 |
| Feb 23, 2026 | Gregory S. Martiniofficer: Chief Financial Officer | Sale | 10,487 | $3.81 | 172,058 |
| Feb 24, 2026 | Thomas A. MCCOURTdirector, officer: Chief Executive Officer | Sale | 103,526 | $3.66 | 1,489,002 |
| Feb 23, 2026 | Thomas A. MCCOURTdirector, officer: Chief Executive Officer | Sale | 94,757 | $3.81 | 1,592,528 |
| Feb 24, 2026 | Tammi L. Gaskinsofficer: Chief Commercial Officer | Sale | 11,239 | $3.66 | 213,738 |
House and Senate disclosures
Not reported.