Werewolf Therapeutics Ownership | Who Owns Werewolf Therapeutics?

Werewolf Therapeutics Ownership Summary

Werewolf Therapeutics is owned by 46.40% institutional investors, 5.61% insiders, and 47.99% 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	46.40%	5.61%	47.99%
Sector	Healthcare Stocks	42.54%	10.82%	46.64%
Industry	Biotech Stocks	45.21%	10.75%	44.04%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Ra capital management	6.68M	14.85%	$13.16M
Mpm asset management	4.31M	9.58%	$8.49M
Bioimpact capital	2.41M	5.36%	$4.75M
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%	$1.23M
Dc funds, lp	589.10K	1.31%	$1.16M
Renaissance	456.00K	1.01%	$898.32K

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	19.08%	$8.49M
Bioimpact capital	2.41M	0.78%	$4.75M
Sphera funds management	626.81K	0.26%	$1.23M
Ra capital management	6.68M	0.16%	$13.16M
Pfm health sciences, lp	401.11K	0.06%	$790.19K
Bridgeway capital management	102.00K	0.00%	$200.94K
Point72 asia (singapore) pte.	13.02K	0.00%	$25.64K
Financial perspectives	6.75K	0.00%	$13.30K
Regal investment advisors	27.20K	0.00%	$53.59K

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	1.59M	0.00%	1.42M
Bank of america corp /de/	2.15M	0.00%	266.31K
Millennium management	784.62K	0.00%	188.33K
Renaissance	456.00K	0.00%	139.70K
Vanguard group	1.41M	-	109.80K

Top Sellers

Holder	Shares	% Assets	Change
Adage capital partners gp	-	-	-2.00M
Rubric capital management lp	-	-	-1.33M
Monashee investment management	-	-	-890.00K
Eagle health investments lp	-	-	-700.00K
Blackrock funding, inc. /de	101.32K	-	-260.66K

New Positions

Holder	Shares	% Assets	Change	Value
Cubist systematic strategies	46.71K	0.00%	46.71K	$92.02K
Susquehanna group, llp	33.86K	-	33.86K	$50.12K
D. e. shaw	17.78K	-	17.78K	$26.31K
Virtu financial	12.23K	0.00%	12.23K	$24.00K
Cetera investment advisers	10.20K	-	10.20K	$20.09K

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)	-403.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	60	-3.23%	20,872,525	-5.08%	46	1.94%	20	-33.33%	18	-
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%

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
Dec 17, 2025	EVNIN LUKE	-	Sell	$11.38K
Dec 16, 2025	EVNIN LUKE	-	Sell	$15.28K
Dec 15, 2025	EVNIN LUKE	-	Sell	$25.29K
Dec 10, 2025	EVNIN LUKE	-	Sell	$39.33K
Dec 11, 2025	EVNIN LUKE	-	Sell	$29.97K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	93
2025 Q2	3	-
2025 Q1	-	-
2024 Q2	-	-
2024 Q1	-	-

HOWL Ownership FAQ

Who Owns Werewolf Therapeutics?

Werewolf Therapeutics shareholders are primarily institutional investors at 46.40%, followed by 5.61% insiders and 47.99% retail investors. The average institutional ownership in Werewolf Therapeutics's industry, Biotech Stocks , is 45.21%, which Werewolf Therapeutics exceeds.

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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