SCHEDULE Filed 2025-05-14 Event 2025-05-12 SEC 0001415889-25-012944 →

RA CAPITAL MANAGEMENT, L.P. → Werewolf Therapeutics, Inc. HOWL

Stake: 15.00% Shares: 6,746,807 CUSIP: 95075A107 Class: Common Stock, $0.0001 par value per share

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

9 13D/G filings on this issuer

8 other filings besides this one

Filer Track Record

78 filings by this filer

77 other filings in the data moat

Short Interest · settle 2026-07-15

DTC 1.03

934,340 shares short · +10.3% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

1 holder · $9K

Point72 Asset Mgmt

Post-Filing Returns · since 2025-05-12 on HOWL

+1 day

0.0%

+5 days

0.0%

+30 days

0.0%

+60 days

0.0%

+90 days

0.0%

+180 days

0.0%

Anchor price 0.34 on closest trading day on/after 2025-05-12. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Werewolf Therapeutics, Inc.

Filed	Form	Filer	Stake	Shares
2026-07-02	SCHEDULE 13D/A	RA CAPITAL MANAGEMENT, L.P.	4.10%	1,985,541	view →
2026-06-26	SCHEDULE 13D/A	RA CAPITAL MANAGEMENT, L.P.	6.00%	2,915,742	view →
2026-06-22	SCHEDULE 13D/A	RA CAPITAL MANAGEMENT, L.P.	—	3,654,307	view →
2026-06-15	SCHEDULE 13D/A	RA CAPITAL MANAGEMENT, L.P.	—	5,138,703	view →
2026-05-14	SCHEDULE 13D/A	RA CAPITAL MANAGEMENT, L.P.	—	6,116,140	view →
2025-12-29	SCHEDULE	MPM BioVentures 2014, L.P.	8.20%	3,977,612	view →
2022-08-12	SC	RA CAPITAL MANAGEMENT, L.P.	—	—	view →
2021-06-16	SC	RA CAPITAL MANAGEMENT, L.P.	—	—	view →

Other Filings by RA CAPITAL MANAGEMENT, L.P.

Filed	Form	Issuer	Stake	Shares
2026-07-23	SCHEDULE 13D/A	ARTIVA BIOTHERAPEUTICS, INC.	—	18,415,956	view →
2026-07-22	SCHEDULE 13D/A	Freenome, Inc.	—	15,367,270	view →
2026-07-21	SCHEDULE 13D/A	VOR BIOPHARMA INC.	—	12,937,855	view →
2026-07-20	SCHEDULE 13G	Agenus Inc.	—	—	view →
2026-07-07	SCHEDULE 13D/A	Climb Bio, Inc. CLYM	33.00%	23,249,186	view →
2026-07-02	SCHEDULE 13D/A	WEREWOLF THERAPEUTICS, INC. HOWL	4.10%	1,985,541	view →
2026-06-26	SCHEDULE 13D/A	WEREWOLF THERAPEUTICS, INC. HOWL	6.00%	2,915,742	view →
2026-06-24	SCHEDULE 13D/A	SOLID BIOSCIENCES INC. SLDB	—	12,036,126	view →
2026-06-22	SCHEDULE 13D/A	WEREWOLF THERAPEUTICS, INC. HOWL	—	3,654,307	view →
2026-06-18	SCHEDULE 13D	Parabilis Medicines, Inc. PBLS	23.80%	28,933,371	view →
2026-06-15	SCHEDULE 13D/A	ARTIVA BIOTHERAPEUTICS, INC. ARTV	36.60%	17,811,623	view →
2026-06-15	SCHEDULE 13D/A	WEREWOLF THERAPEUTICS, INC. HOWL	—	5,138,703	view →
2026-06-03	SCHEDULE 13G	Editas Medicine, Inc. EDIT	—	—	view →
2026-05-21	SCHEDULE 13G	Sana Biotechnology, Inc. SANA	—	—	view →
2026-05-14	SCHEDULE 13D/A	WEREWOLF THERAPEUTICS, INC. HOWL	—	6,116,140	view →
2026-05-13	SCHEDULE 13D/A	ARTIVA BIOTHERAPEUTICS, INC. ARTV	—	16,377,468	view →
2026-01-09	SCHEDULE	Cidara Therapeutics, Inc.	—	—	view →
2025-11-07	SCHEDULE	Sionna Therapeutics, Inc. SION	22.60%	10,071,712	view →
2025-11-07	SCHEDULE	LENZ Therapeutics, Inc. LENZ	13.60%	4,265,106	view →
2025-11-03	SCHEDULE	89bio, Inc.	—	—	view →

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