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HOWL · NASDAQ · Biotechnology

Werewolf Therapeutics (HOWL)

Develops conditionally activated cytokine and T-cell-engager therapies for cancer.

$0.9742
vs last close−0.01 (−0.79%)

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13F · 13D/G · Form 4

Institutions22.36%10.86M shares
47 holders · as of Jun 30, 2026
Insiders15.08%7.33M shares
3 holders · as of Sep 21, 2026
Other62.56%30.41M shares
remainder

48.60M company shares as of Sep 23, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

13F · 13D/G · Form 4

HolderStakeSharesDate
Ansbert GadickeInsiderother: Former 10% Owner
9.84%4.78Mfiled Dec 4, 2025
Moll PeterInsider
5.22%2.54Mfiled Sep 21, 2026
Ra Capital Management, L.P.Institution
4.91%2.39Mas of Jun 30, 2026
Balyasny Asset Management L.P.Institution
3.68%1.79Mas of Jun 30, 2026
Vanguard Capital Management LLCInstitution
2.51%1.22Mas of Jun 30, 2026
Renaissance Technologies LLCInstitution
1.39%674,632as of Jun 30, 2026
LYNX1 Capital Management LPInstitution
1.35%657,786as of Jun 30, 2026
Sphera Funds Management Ltd.Institution
1.29%626,810as of Jun 30, 2026
DC Funds, LPInstitution
1.21%589,102as of Jun 30, 2026
Verdad Advisers, LPInstitution
0.72%348,709as of Jun 30, 2026
Geode Capital Management, LLCInstitution
0.69%335,815as of Jun 30, 2026
Bank of America Corp /DE/Institution
0.64%311,502as of Jun 30, 2026
XTX Topco LtdInstitution
0.56%271,478as of Jun 30, 2026
Jane Street Group, LLCInstitution
0.52%251,837as of Jun 30, 2026
UBS Group AGInstitution
0.44%215,838as of Jun 30, 2026
Vanguard Fiduciary Trust CoInstitution
0.32%157,726as of Jun 30, 2026
State Street CorpInstitution
0.25%119,168as of Jun 30, 2026
Squarepoint Ops LLCInstitution
0.21%103,242as of Jun 30, 2026
BlackRock, Inc.Institution
0.21%101,573as of Jun 30, 2026
Rangeley Capital, LLCInstitution
0.21%100,000as of Jun 30, 2026
Northern Trust CorpInstitution
0.18%86,851as of Jun 30, 2026
Alyeska Investment Group, L.P.Institution
0.18%86,554as of Jun 30, 2026
Bioimpact Capital LLCInstitution
0.16%80,142as of Jun 30, 2026
Millennium Management LLCInstitution
0.13%62,055as of Jun 30, 2026
Virtu Financial LLCInstitution
0.09%45,467as of Jun 30, 2026

13F, as of Jun 30, 2026

47 holders · 10.86M shares · 9 new positions · 19 increased · 9 reduced · 11 closed

HolderShares% outstandingChg q/qFiled
Ra Capital Management, L.P.2.39M4.91%−4.29MAug 14, 2026
Balyasny Asset Management L.P.1.79M3.68%+1.79MnewAug 14, 2026
Vanguard Capital Management LLC1.22M2.51%0Aug 13, 2026
Renaissance Technologies LLC674.6K1.39%+158.4KAug 13, 2026
LYNX1 Capital Management LP657.8K1.35%0Aug 13, 2026
Sphera Funds Management Ltd.626.8K1.29%0Aug 14, 2026
DC Funds, LP589.1K1.21%0Aug 14, 2026
Verdad Advisers, LP348.7K0.72%+318.9KAug 14, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Moll Peter5.20%2.54M13GSep 21, 2026

Form 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Jul 7, 2026
Luke Evnindirector
Sale107,429$0.31000
Jul 6, 2026
Luke Evnindirector
Sale35,770$0.3200107,429
Jun 29, 2026
Luke Evnindirector
Sale157,084$0.3000143,199
Jun 17, 2026
Ra Capital Management, L.P.10 percent owner
Sale · 2 lots416,911$0.3500303,719
Jun 16, 2026
Ra Capital Management, L.P.10 percent owner
Sale · 2 lots149,625$0.3700331,414
Jun 15, 2026
Ra Capital Management, L.P.10 percent owner
Sale · 2 lots128,770$0.3900341,353
Jun 12, 2026
Ra Capital Management, L.P.10 percent owner
Sale · 2 lots170,441$0.4000349,907
Jun 11, 2026
Ra Capital Management, L.P.10 percent owner
Sale · 2 lots262,503$0.3800361,229
Jun 10, 2026
Ra Capital Management, L.P.10 percent owner
Sale · 2 lots45,923$0.3700378,666
Jun 9, 2026
Ra Capital Management, L.P.10 percent owner
Sale · 2 lots369,800$0.3700381,717

House and Senate disclosures

Not reported.