SC Filed 2021-03-01 Event — SEC 0000899140-21-000349 →

Sarissa Capital Management LP → IRONWOOD PHARMACEUTICALS INC IRWD

Stake: — Shares: —

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

3 13D/G filings on this issuer

2 other filings besides this one

Filer Track Record

27 filings by this filer

26 other filings in the data moat

Short Interest · settle 2026-03-31

DTC 4.67

17,904,692 shares short · +30.7% vs prior

Other 13D/G Filings on IRONWOOD PHARMACEUTICALS INC

Filed	Form	Filer	Stake	Shares
2020-11-09	SC	Sarissa Capital Management LP	—	—	view →
2020-02-26	SC	Sarissa Capital Management LP	—	—	view →

Other Filings by Sarissa Capital Management LP

Filed	Form	Issuer	Stake	Shares
2025-03-17	SCHEDULE	Innoviva, Inc. INVA	4.70%	2,966,022	view →
2025-03-07	SCHEDULE	Innoviva, Inc. INVA	8.40%	5,237,161	view →
2023-09-05	SC	AMARIN CORP PLC\UK AMRN	—	—	view →
2023-06-21	SC	Alkermes plc. ALKS	—	—	view →
2023-06-12	SC	Sarissa Capital Management LP	—	—	view →
2023-06-12	SC	Alkermes plc. ALKS	—	—	view →
2023-02-28	SC	AMARIN CORP PLC\UK AMRN	—	—	view →
2023-02-27	SC	AMARIN CORP PLC\UK AMRN	—	—	view →
2023-02-21	SC	AMARIN CORP PLC\UK AMRN	—	—	view →
2023-01-11	SC	AMARIN CORP PLC\UK AMRN	—	—	view →
2022-10-11	SC	AMARIN CORP PLC\UK AMRN	—	—	view →
2022-07-06	SC	Alkermes plc. ALKS	—	—	view →
2022-01-10	SC	Alkermes plc. ALKS	—	—	view →
2021-11-19	SC	Alkermes plc. ALKS	—	—	view →
2021-09-10	SC	Alkermes plc. ALKS	—	—	view →
2021-05-27	SC	Alkermes plc. ALKS	—	—	view →
2021-05-25	SC	Innoviva, Inc. INVA	—	—	view →
2021-02-12	SC	Iterum Therapeutics plc ITRMF	—	—	view →
2020-12-14	SC	Innoviva, Inc. INVA	—	—	view →
2020-11-09	SC	IRONWOOD PHARMACEUTICALS INC IRWD	—	—	view →

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