Sarissa Capital Management LP
Position in IRWD — Ironwood Pharmaceuticals Inc
CIK 1577524
GREENWICH, CT
Position in IRWD
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$38,684,153
+$6,432,045 QoQ
Shares Held
9,188,635
0.0% QoQ
Ownership
5.56%
of shares outstanding
% of Portfolio
21.75%
of 13F equity value
Holder Rank
#3
of 212 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in IRWD Over Time
Shares Held
Position Value (USD)
Position in Drug Manufacturers - Specialty & Generic
Healthcare · as of Jun 30, 2026Sarissa Capital Management LP holds $76,842,617 across 3 Drug Manufacturers - Specialty & Generic names. IRWD ranks #1 (50.3% of the industry book) .
All Filings in IRWD
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27 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $38,684,153 | 9,188,635 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $32,252,108 | 9,188,635 | Shares | Sole | 2026-05-15 | |
| 2026-03-17 | $29,863,063 | 9,188,635 | Shares | Sole | 2026-03-19 | |
| 2025-12-31 | $53,648,495 | 15,919,435 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $20,854,459 | 15,919,435 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $11,461,993 | 15,919,435 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $24,093,300 | 16,390,000 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $72,607,700 | 16,390,000 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $67,526,800 | 16,390,000 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $106,862,800 | 16,390,000 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $142,756,900 | 16,390,000 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $187,501,600 | 16,390,000 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $157,835,700 | 16,390,000 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $174,389,600 | 16,390,000 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $172,422,800 | 16,390,000 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $203,072,100 | 16,390,000 | Shares | Sole | 2023-02-14 | |
| 2022-09-30 | $169,800,400 | 16,390,000 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $188,976,700 | 16,390,000 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $206,186,200 | 16,390,000 | Shares | Sole | 2022-05-16 | |
| 2021-12-31 | $191,107,400 | 16,390,000 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $214,053,400 | 16,390,000 | Shares | Sole | 2021-11-15 | |
| 2021-06-30 | $210,939,300 | 16,390,000 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $183,240,200 | 16,390,000 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $159,915,600 | 14,040,000 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $126,219,600 | 14,040,000 | Shares | Sole | 2020-11-16 | |
| 2020-06-30 | $144,892,800 | 14,040,000 | Shares | Sole | 2020-08-14 | |
| 2020-03-31 | $136,467,250 | 13,525,000 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||