Werewolf Therapeutics Ownership | Who Owns Werewolf Therapeutics?

Werewolf Therapeutics Ownership Summary

Werewolf Therapeutics is owned by 49.66% institutional investors, 5.96% insiders, and 44.39% retail investors. Ra capital management is the largest institutional shareholder, holding 14.85% of HOWL shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 1.93% of its assets in Werewolf Therapeutics shares.

HOWL Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Werewolf Therapeutics	49.66%	5.96%	44.39%
Sector	Healthcare Stocks	492.67%	11.09%	-403.76%
Industry	Biotech Stocks	295.31%	11.22%	-206.53%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Ra capital management	6.68M	14.85%	$7.28M
Mpm asset management	4.31M	9.58%	$4.70M
Bioimpact capital	2.41M	5.36%	$2.63M
Bank of america corp /de/	2.15M	5.16%	$5.24M
Blackrock	1.59M	3.82%	$3.87M
Vanguard group	1.41M	3.13%	$2.77M
Millennium management	784.62K	1.75%	$762.80K
Sphera funds management	626.81K	1.39%	$683.22K
Dc funds, lp	589.10K	1.31%	$1.16M
State street	426.77K	0.98%	$631.62K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Dc funds, lp	589.10K	37.32%	$1.16M
Mpm asset management	4.31M	10.84%	$4.70M
Bioimpact capital	2.41M	0.45%	$2.63M
Sphera funds management	626.81K	0.16%	$683.22K
Ra capital management	6.68M	0.12%	$7.28M
Pfm health sciences, lp	401.11K	0.04%	$437.21K
Point72 asia (singapore) pte.	20.13K	0.00%	$21.94K
Financial perspectives	6.75K	0.00%	$13.30K
Bridgeway capital management	109.59K	0.00%	$162.19K
Two sigma securities	22.41K	0.00%	$24.43K

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	1.59M	0.00%	1.42M
Ra capital management	6.68M	0.12%	536.43K
Bank of america corp /de/	2.15M	0.00%	266.31K
Millennium management	784.62K	0.00%	188.33K
Vanguard group	1.41M	-	109.80K

Top Sellers

Holder	Shares	% Assets	Change
Pfm health sciences, lp	401.11K	0.04%	-2.11M
Adage capital partners gp	-	-	-2.00M
Rubric capital management lp	-	-	-1.33M
Monashee investment management	-	-	-890.00K
Eagle health investments lp	-	-	-700.00K

New Positions

Holder	Shares	% Assets	Change	Value
Marshall wace, llp	103.78K	0.00%	103.78K	$113.13K
Qube research	44.26K	-	44.26K	$48.24K
Hrt financial lp	42.48K	0.00%	42.48K	$46.00K
Susquehanna group, llp	33.86K	-	33.86K	$50.12K
Quadrature capital	25.79K	0.00%	25.79K	$27.98K

Sold Out

Holder	Change
Ifp advisors	-1.00
True wealth design	-13.00
Capital performance advisors llp	-60.00
Russell investments group	-86.00
Point72 (difc)	-381.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	65	-9.72%	22,335,903	-18.62%	49	1.32%	32	3.23%	19	-5.00%
Mar 31, 2025	1	-98.65%	1,333,893	-95.26%	2	0.07%	-	-100.00%	-	-100.00%
Dec 31, 2024	45	-35.71%	5,479,410	-82.99%	12	0.23%	28	-28.21%	8	-33.33%
Sep 30, 2024	69	-4.17%	31,964,492	-0.84%	73	1.22%	38	-15.56%	12	-7.69%
Jun 30, 2024	72	14.29%	32,236,039	-0.05%	77	1.00%	45	15.38%	13	8.33%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	876.59K	1.93%	-19.16K
Vanguard US Total Market Shares ETF	800.28K	1.79%	-
HBM Healthcare Investments AG Ord	396.80K	0.91%	-60.51K
Fidelity Small Cap Index	311.53K	0.69%	-
Vanguard Institutional Extnd Mkt Idx Tr	284.82K	0.63%	-107.34K
BIT Biotech Opportunities S	241.06K	0.54%	-
Fidelity Extended Market Index	166.01K	0.36%	-1.37K
Vanguard Russell 2000 ETF	152.99K	0.34%	1.40K
Royce Micro Cap Trust	125.48K	0.29%	88.16K
A4Investments SICAV SIF ACCI IlanaA2EURH	117.75K	0.26%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 12, 2025	EVNIN LUKE	-	Sell	$28.45K
Nov 07, 2025	EVNIN LUKE	-	Sell	$48.78K
Nov 10, 2025	EVNIN LUKE	-	Sell	$36.78K
Nov 11, 2025	EVNIN LUKE	-	Sell	$40.83K
Nov 07, 2025	MPM BioVentures 2014, L.P.	-	Sell	$76.01K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	39
2025 Q2	3	-
2025 Q1	-	-
2024 Q2	-	-
2024 Q1	-	-

HOWL Ownership FAQ

Who Owns Werewolf Therapeutics?

Werewolf Therapeutics shareholders are primarily institutional investors at 49.66%, followed by 5.96% insiders and 44.38% retail investors. The average institutional ownership in Werewolf Therapeutics's industry, Biotech Stocks , is 295.31%, which Werewolf Therapeutics falls below.

Who owns the most shares of Werewolf Therapeutics?

Werewolf Therapeutics’s largest shareholders are Ra capital management (6.68M shares, 14.85%), Mpm asset management (4.31M shares, 9.58%), and Bioimpact capital (2.41M shares, 5.36%). Together, they hold 29.79% of Werewolf Therapeutics’s total shares outstanding.

Does Blackrock own Werewolf Therapeutics?

Yes, BlackRock owns 3.82% of Werewolf Therapeutics, totaling 1.59M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 3.87M$. In the last quarter, BlackRock increased its holdings by 1.42M shares, a 863.47% change.

Who is Werewolf Therapeutics’s biggest shareholder by percentage of total assets invested?

Dc funds, lp is Werewolf Therapeutics’s biggest shareholder by percentage of total assets invested, with 37.32% of its assets in 589.1K Werewolf Therapeutics shares, valued at 1.16M$.

Who is the top mutual fund holder of Werewolf Therapeutics shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Werewolf Therapeutics shares, with 1.93% of its total shares outstanding invested in 876.59K Werewolf Therapeutics shares.

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