Werewolf Therapeutics, Inc. - Common Stock (HOWL)

Historical Holders from Q2 2021 to Q3 2025

Type / Class
Equity / Common Stock
Symbol
HOWL on Nasdaq
Shares outstanding
48,507,463
Price per share
$1.97
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares as of 30 Sep 2025
21,108,242
Total reported value
$41,572,612
% of total 13F portfolios
0%
Share change
-1,214,496
Value change
-$2,126,396
Avg buy value change
+0%
Avg sell value change
-0%
Number of holders
62
Price from insider filings
$0.6400
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Werewolf Therapeutics, Inc. - Common Stock (HOWL) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
RA CAPITAL MANAGEMENT, L.P. 14% -8% $13,162,175 -$129,035 6,681,307 -0.97% RA Capital Management, L.P. 04 Nov 2025
MPM BioVentures 2014, L.P. 8.2% -18% $3,619,627 -$809,653 3,977,612 -18% ANSBERT GADICKE 22 Dec 2025
PFM Health Sciences, LP 0.9% -80% $533,476 -$3,330,792 401,110 -86% PFM Health Sciences, LP 30 Jun 2025
As of 30 Sep 2025, Werewolf Therapeutics, Inc. - Common Stock (HOWL) has 62 institutional shareholders filing 13F forms. They hold 21,108,242 shares. of 48,507,463 outstanding shares (44%) .

Top 25 institutional shareholders own 43% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
RA CAPITAL MANAGEMENT, L.P. 14% 6,681,307 0% 0.16% $13,162,175
MPM ASSET MANAGEMENT LLC 8.9% 4,309,860 0% 19% $8,490,424
MPM BIOIMPACT LLC 5% 2,408,810 0% 0.78% $4,745,356
BANK OF AMERICA CORP /DE/ 3.8% 1,830,292 -14% 0% $3,605,675
VANGUARD GROUP INC 2.9% 1,408,047 +8.5% 0% $2,773,852
SPHERA FUNDS MANAGEMENT LTD. 1.3% 626,810 0% 0.29% $1,234,816
DC Funds, LP 1.2% 589,102 0% 37% $1,160,531
RENAISSANCE TECHNOLOGIES LLC 0.94% 456,000 +44% 0% $898,320
PFM Health Sciences, LP 0.83% 401,110 0% 0.07% $790,187
GEODE CAPITAL MANAGEMENT, LLC 0.68% 330,787 +0.86% 0% $651,832
MILLENNIUM MANAGEMENT LLC 0.65% 317,053 -54% 0% $624,594
JANE STREET GROUP, LLC 0.55% 268,577 -28% 0% $529,097
Alyeska Investment Group, L.P. 0.49% 235,705 0% 0% $464,339
CITADEL ADVISORS LLC 0.32% 154,534 0% $304,432
STATE STREET CORP 0.25% 119,168 0% 0% $234,761
BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.21% 102,000 0% 0% $200,940
BlackRock, Inc. 0.21% 101,323 -72% 0% $199,606
SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.19% 93,041 +17% 0% $183,291
NORTHERN TRUST CORP 0.14% 65,836 0% 0% $129,697
GOLDMAN SACHS GROUP INC 0.12% 60,341 -73% 0% $118,872
EDGEWOOD MANAGEMENT LLC 0.1% 50,000 0% 0% $98,500
Cubist Systematic Strategies, LLC 0.1% 46,711 0% $92,020
HRT FINANCIAL LP 0.08% 39,859 -6.2% 0% $78,000
Vontobel Holding Ltd. 0.07% 36,000 -10% 0% $70,920
TWO SIGMA ADVISERS, LP 0.07% 34,600 -39% 0% $68,162

Institutional Holders of Werewolf Therapeutics, Inc. - Common Stock (HOWL) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (% of par) Investors
2025 Q3 21,108,242 $41,572,612 -$2,126,396 197% 62
2025 Q2 22,335,758 $24,343,246 -$5,335,454 109% 65
2025 Q1 27,445,533 $26,679,067 -$940,149 97.22% 70
2024 Q4 28,168,571 $41,689,237 -$7,798,202 148% 70
2024 Q3 32,205,548 $68,274,294 -$1,019,969 212% 68
2024 Q2 32,236,039 $78,650,636 -$5,841,249 244% 69
2024 Q1 32,250,885 $208,967,732 +$29,727,953 648% 58
2023 Q4 27,669,999 $106,805,060 +$14,930,496 386% 41
2023 Q3 23,882,934 $51,107,776 -$364,729 214% 34
2023 Q2 24,044,510 $73,333,928 +$109,395 305% 35
2023 Q1 24,035,818 $62,491,910 +$8,495,816 260% 37
2022 Q4 20,880,228 $42,804,090 -$4,165,821 205% 36
2022 Q3 20,956,559 $94,490,128 +$8,516,084 451.01% 39
2022 Q2 19,049,454 $77,912,023 +$211,265 409% 37
2022 Q1 18,982,797 $83,522,100 -$5,018,445 440% 47
2021 Q4 19,095,808 $227,430,761 -$994,747 1,191% 49
2021 Q3 19,007,939 $326,228,290 -$12,882,776 1,716% 42
2021 Q2 19,758,281 $344,315,360 +$334,041,398 1,744% 45