Werewolf Therapeutics, Inc. HOWL NASDAQ

NASDAQ Global Select • Healthcare • Biotechnology • US • USD

SharesGrow Score

38/100

2/6 Pass

SharesGrow Intrinsic Value

Werewolf Therapeutics, Inc. (HOWL) has 20 known insider and institutional holders on record. The largest holder is RA CAPITAL MANAGEMENT, L.P. with 6,021,969 shares. Other notable holders include GADICKE ANSBERT and MPM BioVentures 2014, L.P..

Over the last 12 months, insiders have made 112 transactions in HOWL stock — 12 buys (valued at $893.52K) and 95 sells (valued at $4.48M). Insider selling has exceeded buying during this period.

HOWL Insider Ownership

Top Holder

RA CAPITAL MANAGEMENT, L.P.

6,021,969 shares

Buys (12 mo)

$893.52K value

Sells (12 mo)

$4.48M value

12-Month Transaction Activity

Buy 11%

Sell 85%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Ra Capital Management, L.p.	10 Percent Owner	6,021,969	2025-05-14	100%
2	Gadicke Ansbert	Other: Former 10% Owner	4,924,566	2025-12-04	82%
3	Mpm Bioventures 2014, L.p.	Other: Former 10% Owner	4,924,566	2025-12-04	82%
4	Asanuma Sakae	10 Percent Owner	3,797,921	2021-05-04	63%
5	Evnin Luke	Director	2,159,860	2026-01-20	36%
6	Bloom Steven H.	Chief Business Officer	201,720	2025-05-02	3%
7	Hicklin Daniel J	See Remarks	185,652	2025-01-06	3%
8	Seidel-dugan Cynthia	Chief Scientific Officer	150,000	2024-01-04	2%
9	Karunatilake Chulani	Chief Technology Officer	150,000	2025-01-06	2%
10	Lubman Ellen	Chief Business Officer	131,900	2025-01-06	2%
11	Leonard Reid	Chief Operating Officer	93,600	2023-01-09	2%
12	Isaacs Randi	Chief Medical Officer	68,151	2025-01-06	1%
13	Trost Timothy W.	Chief Financial Officer	60,358	2025-01-06	1%
14	Morrison Briggs	Director	27,000	2025-06-13	0%
15	Lazarus Alon	Director	27,000	2025-06-13	0%
16	Sherman Michael A.	Director	27,000	2025-06-13	0%
17	Atkins Michael B.	Director	27,000	2025-06-13	0%
18	Chatterjee Meeta	Director	27,000	2025-06-13	0%
19	Dirocco Derek	Director	17,500	2024-05-24	0%
20	Shah Rajeev M.	Director	11,600	2022-06-03	0%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-02-13	Urban Michael J.	VP of Finance & Corp. Contr.	Unknown	54,800	$1.56	$85.49K
2026-01-16	Evnin Luke	Director	Informative Sell	38,782	$0.54	$20.94K
2026-01-15	Evnin Luke	Director	Informative Sell	37,413	$0.55	$20.58K
2026-01-14	Evnin Luke	Director	Informative Sell	30,616	$0.57	$17.45K
2026-01-13	Evnin Luke	Director	Informative Sell	43,198	$0.55	$23.76K
2026-01-12	Evnin Luke	Director	Informative Sell	58,980	$0.57	$33.62K
2026-01-09	Evnin Luke	Director	Informative Sell	24,678	$0.61	$15.05K
2026-01-08	Evnin Luke	Director	Informative Sell	7,716	$0.63	$4.86K
2026-01-07	Evnin Luke	Director	Informative Sell	11,915	$0.64	$7.63K
2026-01-06	Evnin Luke	Director	Informative Sell	40,761	$0.65	$26.49K
2026-01-05	Evnin Luke	Director	Informative Sell	18,378	$0.64	$11.76K
2026-01-02	Evnin Luke	Director	Informative Sell	18,568	$0.63	$11.7K
2025-12-31	Evnin Luke	Director	Informative Sell	24,962	$0.62	$15.48K
2025-12-30	Evnin Luke	Director	Informative Sell	34,847	$0.61	$21.26K
2025-12-29	Evnin Luke	Director	Informative Sell	108,606	$0.61	$66.25K
2025-12-26	Evnin Luke	Director	Informative Sell	35,632	$0.63	$22.45K
2025-12-24	Evnin Luke	Director	Informative Sell	16,310	$0.65	$10.6K
2025-12-23	Evnin Luke	Director	Informative Sell	71,428	$0.63	$45K
2025-12-22	Evnin Luke	Director	Informative Sell	59,307	$0.69	$40.92K
2025-12-17	Evnin Luke	Director	Informative Sell	9,983	$1.14	$11.38K
2025-12-16	Evnin Luke	Director	Informative Sell	14,548	$1.05	$15.28K
2025-12-15	Evnin Luke	Director	Informative Sell	23,640	$1.07	$25.29K
2025-12-12	Evnin Luke	Director	Informative Sell	17,858	$1.08	$19.29K
2025-12-11	Evnin Luke	Director	Informative Sell	28,009	$1.07	$29.97K
2025-12-10	Evnin Luke	Director	Informative Sell	37,104	$1.06	$39.33K