# Sarissa Capital Management LP: Form 13F holdings

An institutional investment manager in GREENWICH, CT. SEC CIK 1577524.

- Quarter ended: 2026-06-30
- Filed: 2026-08-14
- Reported value: $177.9m
- Positions: 10 (10 lines in the filing's table; lines for the same security and option type are added together here)
- Compared with: the 13F for the quarter ended 2026-03-31
- Filing: https://www.sec.gov/Archives/edgar/data/1577524/000089914026000879/

## Holdings

As filed, largest first. Reported value is what the manager stated at the quarter end (Jun 30, 2026), in US dollars; it is filing data, not a price. Weight is the share of the total reported value.

| Issuer | Class | Reported value | Weight | Shares | Put or call | Change on the quarter before |
| --- | --- | ---: | ---: | ---: | --- | --- |
| [INNOVIVA INC (INVA)](/companies/inva.md) | COM | $42.9m | 24.1% | 1,890,604 |  | Reduced −240,346 |
| [IRONWOOD PHARMACEUTICALS INC (IRWD)](/companies/irwd.md) | COM CL A | $38.7m | 21.7% | 9,188,635 |  | Unchanged |
| [AMARIN CORP PLC (AMRN)](/companies/amrn.md) | SPONSORED ADR | $26.7m | 15.0% | 1,673,395 |  | Unchanged |
| [NEUROCRINE BIOSCIENCES INC (NBIX)](/companies/nbix.md) | COM | $19.6m | 11.0% | 116,533 |  | Unchanged |
| [CYTOKINETICS INC (CYTK)](/companies/cytk.md) | COM NEW | $19.5m | 10.9% | 228,623 |  | Unchanged |
| [LANTHEUS HLDGS INC (LNTH)](/companies/lnth.md) | COM | $18.5m | 10.4% | 166,919 |  | Unchanged |
| BIOHAVEN LTD | COM | $8.7m | 4.9% | 582,312 |  | Added +19,128 |
| [REGENERON PHARMACEUTICALS (REGN)](/companies/regn.md) | COM | $2.6m | 1.5% | 4,190 |  | Unchanged |
| [VOR BIOPHARMA INC (VOR)](/companies/vor.md) | COM NEW | $467.6k | 0.3% | 25,399 |  | Unchanged |
| [BIOGEN INC (BIIB)](/companies/biib.md) | COM | $205.3k | 0.1% | 950 |  | New +950 |

Source: SEC EDGAR, Form 13F-HR, accession 0000899140-26-000879. Last ingested by Listed: Oct 22, 2026, 05:26 ET. No prices; not investment advice.