Werewolf Therapeutics Ownership | Who Owns Werewolf Therapeutics?

Werewolf Therapeutics Ownership Summary

Werewolf Therapeutics is owned by 4.95% institutional investors, 5.62% insiders, and 89.44% retail investors. Ra capital management is the largest institutional shareholder, holding 14.52% of HOWL shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 1.80% of its assets in Werewolf Therapeutics shares.

HOWL Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Werewolf Therapeutics	4.95%	5.62%	89.44%
Sector	Healthcare Stocks	35.49%	11.75%	52.76%
Industry	Biotech Stocks	34.83%	11.71%	53.46%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Ra capital management	6.68M	14.52%	$5.56M
Mpm asset management	4.31M	9.58%	$8.49M
Bank of america corp /de/	2.15M	5.16%	$5.24M
Blackrock	1.59M	3.82%	$3.87M
Vanguard group	1.41M	3.10%	$892.70K
Bioimpact capital	1.21M	2.63%	$1.01M
Lynx1 capital management lp	657.79K	1.43%	$547.67K
Sphera funds management	626.81K	1.36%	$521.88K
Dc funds, lp	589.10K	1.28%	$490.49K
Renaissance	516.22K	1.12%	$429.80K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Dc funds, lp	589.10K	33.01%	$490.49K
Mpm asset management	4.31M	19.08%	$8.49M
Lynx1 capital management lp	657.79K	0.09%	$547.67K
Sphera funds management	626.81K	0.08%	$521.88K
Bioimpact capital	1.21M	0.08%	$1.01M
Pfm health sciences, lp	401.11K	0.06%	$790.19K
Ra capital management	6.68M	0.06%	$5.56M
Verdad advisers, lp	29.76K	0.03%	$24.78K
Point72 asia (singapore) pte.	13.02K	0.00%	$25.64K
Ranch capital advisors	12.00K	0.00%	$9.99K

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	1.59M	0.00%	1.42M
Bank of america corp /de/	2.15M	0.00%	266.31K
Vanguard fiduciary trust	157.73K	-	157.73K
Geode capital management	389.49K	-	53.60K
Xtx topco	50.93K	0.00%	50.93K

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
Verition fund management	-	-	-233.83K

New Positions

Holder	Shares	% Assets	Change	Value
Vanguard fiduciary trust	157.73K	-	157.73K	$131.39K
Xtx topco	50.93K	0.00%	50.93K	$42.40K
Cubist systematic strategies	46.71K	0.00%	46.71K	$92.02K
Verdad advisers, lp	29.76K	0.03%	29.76K	$24.78K
D. e. shaw	17.78K	-	17.78K	$26.31K

Sold Out

Holder	Change
Ifp advisors	-1.00
True wealth design	-13.00
Eversource wealth advisors	-35.00
Plante moran financial advisors	-50.00
Capital performance advisors llp	-60.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	19	-62.00%	2,276,488	-84.55%	4	0.47%	10	-52.38%	3	-81.25%
Dec 31, 2025	31	-50.00%	3,199,424	-84.84%	7	0.32%	15	-28.57%	9	-50.00%
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%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	873.75K	1.80%	-
Vanguard US Total Market Shares ETF	800.28K	1.79%	-
HBM Healthcare Investments AG Ord	396.80K	0.91%	-60.51K
Vanguard Institutional Extnd Mkt Idx Tr	344.23K	0.71%	-
Fidelity Small Cap Index	311.53K	0.69%	-
BIT Biotech Opportunities S	241.06K	0.54%	-
Vifag 2002 SICAV	220.00K	0.45%	-
Fidelity Extended Market Index	218.27K	0.45%	51.13K
Vanguard Russell 2000 ETF	152.99K	0.34%	1.40K
A4Investments SICAV SIF ACCI IlanaA2EURH	150.00K	0.31%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 13, 2026	EVNIN LUKE	-	Sell	$24.13K
May 08, 2026	EVNIN LUKE	-	Sell	$214.02K
May 11, 2026	EVNIN LUKE	-	Sell	$22.75K
May 12, 2026	EVNIN LUKE	-	Sell	$43.45K
May 08, 2026	RA CAPITAL MANAGEMENT, L.P.	-	Sell	$249.57K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	19
2026 Q1	-	11
2025 Q4	-	100
2025 Q2	3	-
2025 Q1	-	-

HOWL Ownership FAQ

Who Owns Werewolf Therapeutics?

Werewolf Therapeutics shareholders are primarily institutional investors at 4.95%, followed by 5.62% insiders and 89.43% retail investors. The average institutional ownership in Werewolf Therapeutics's industry, Biotech Stocks , is 34.83%, 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, 14.52%), Mpm asset management (4.31M shares, 9.58%), and Bank of america corp /de/ (2.15M shares, 5.16%). Together, they hold 29.26% 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 33.01% of its assets in 589.1K Werewolf Therapeutics shares, valued at 490.49K$.

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 1.80% of its total shares outstanding invested in 873.74K Werewolf Therapeutics shares.

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