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Sarissa Capital Management LP

CIK 1577524 · last filed 2025-06-12

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$209.37M

Companies

4

Total Filings

20

Lifetime Open-Market Net

$625.8K

Filer Profile

Reported Address
500 WEST PUTNAM AVENUE, SUITE 400
GREENWICH, CT 06830
Phone
(203) 302-2330
State of Incorporation
DE
Related Filers
ALEXANDER J DENNER — 49 joint filings, latest 2025-12-17
Innoviva, Inc. — 39 joint filings, latest 2025-03-17
IRONWOOD PHARMACEUTICALS INC — 33 joint filings, latest 2026-03-19
Sarissa Capital Offshore Master Fund LP — 10 joint filings, latest 2021-02-12
Sarissa Capital Domestic Fund LP — 6 joint filings, latest 2017-09-01
QLT INC/BC — 5 joint filings, latest 2018-11-09
Sarissa Capital Catapult Fund LLC — 4 joint filings, latest 2021-02-12
Sarissa Capital Hawkeye Fund LP — 4 joint filings, latest 2021-02-12
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
IRWD 10%+ Owner 16,601,769 $4.08 $67.74M $15.52M 9 2025-06-12
INVA 10%+ Owner 6,855,451 $20.66 $141.63M -$38.29M 7 2025-03-06
Sarissa Capital Acquisition Corp. (SRSAU) Delisted 10%+ Owner — $10.04 — $0 2 2020-11-03
SEELOS THERAPEUTICS, INC. (APRI) Delisted 10%+ Owner 48,264 — — $23.40M 2 2018-03-23

Recent Filings · Page 2 of 2

20 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2023-05-15 INVA Buy (P) +580,000 $7.15M EDGAR
2022-09-19 IRWD Grant (A) +2,748 $0 EDGAR
2021-06-16 IRWD Grant (A) +2,458 $0 EDGAR
2021-06-04 IRWD Grant (A) +45,532 $0 EDGAR
2021-03-17 IRWD Grant (A) +2,470 $0 EDGAR
2021-03-05 IRWD Buy (P) +1,550,000 $15.52M EDGAR
2020-11-03 Sarissa Capital Acquisition Corp. (SRSAU) Delisted Other (J) — $0 EDGAR
2020-10-23 Sarissa Capital Acquisition Corp. (SRSAU) Delisted Buy (P) — $0 EDGAR
2018-03-23 SEELOS THERAPEUTICS, INC. (APRI) Delisted Other (J) — $0 EDGAR
2016-03-07 SEELOS THERAPEUTICS, INC. (APRI) Delisted Buy (P) +26,590,912 $23.40M EDGAR
Showing 11–20 of 20
Page 2 of 2
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.