Werewolf Therapeutics, Inc.

NasdaqGS:HOWL Stock Report

Market Cap: US$18.5m

Werewolf Therapeutics Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:HOWL Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
08 Jun 26SellUS$35,710MPM BioImpact LLCCompany88,931US$0.44
03 Jun 26SellUS$32,289MPM BioImpact LLCCompany73,125US$0.47
29 May 26SellUS$34,039MPM BioImpact LLCCompany74,103US$0.48
26 May 26SellUS$73,895MPM BioImpact LLCCompany161,607US$0.47
20 May 26SellUS$67,171MPM BioImpact LLCCompany152,665US$0.50
13 May 26SellUS$21,542MPM BioImpact LLCCompany39,892US$0.54
12 May 26SellUS$390,688RA Capital Management, L.P.Company565,167US$0.71
12 May 26SellUS$390,688RA Capital Management, L.P.Company565,167US$0.71
16 Jan 26SellUS$20,942MPM BioImpact LLCCompany38,782US$0.54
16 Jan 26SellUS$11,689BioImpact Capital LLCCompany21,647US$0.54
16 Jan 26SellUS$18,700MPM BioImpact LLCCompany34,630US$0.54
15 Jan 26SellUS$42,118MPM BioImpact LLCCompany75,464US$0.57
12 Jan 26SellUS$49,509MPM BioImpact LLCCompany84,986US$0.63
07 Jan 26SellUS$36,145MPM BioImpact LLCCompany55,840US$0.65
02 Jan 26SellUS$30,832MPM BioImpact LLCCompany49,527US$0.63
29 Dec 25SellUS$144,299MPM BioImpact LLCCompany231,976US$0.65
29 Dec 25SellUS$266,810MPM BioImpact LLCCompany356,233US$1.14
29 Dec 25SellUS$50,5303AM LLCCompany61,084US$1.14
29 Dec 25SellUS$65,762BioImpact Capital LLCCompany78,373US$1.14
17 Dec 25SellUS$31,009MPM BioImpact LLCCompany28,599US$1.14
12 Dec 25SellUS$56,024MPM BioImpact LLCCompany52,252US$1.08
09 Dec 25SellUS$81,483MPM BioImpact LLCCompany81,463US$1.01
04 Dec 25SellUS$89,591MPM BioImpact LLCCompany96,688US$0.97
03 Dec 25SellUS$65,810MPM BioImpact LLCCompany74,769US$0.89
03 Dec 25SellUS$36,732BioImpact Capital LLCCompany41,733US$0.89
01 Dec 25SellUS$56,208MPM BioImpact LLCCompany58,818US$0.99
01 Dec 25SellUS$49,022BioImpact Capital LLCCompany50,839US$0.99
25 Nov 25SellUS$86,863MPM BioImpact LLCCompany91,394US$0.98
25 Nov 25SellUS$64,317BioImpact Capital LLCCompany70,090US$0.98
20 Nov 25SellUS$68,924MPM BioImpact LLCCompany74,790US$0.94
20 Nov 25SellUS$52,983BioImpact Capital LLCCompany57,350US$0.94
17 Nov 25SellUS$81,427MPM BioImpact LLCCompany86,228US$0.98
17 Nov 25SellUS$71,880BioImpact Capital LLCCompany75,099US$0.98
12 Nov 25SellUS$124,822MPM BioImpact LLCCompany110,466US$1.18
12 Nov 25SellUS$86,428BioImpact Capital LLCCompany76,488US$1.18
06 Nov 25SellUS$66,911MPM BioImpact LLCCompany55,076US$1.22
06 Nov 25SellUS$105,951BioImpact Capital LLCCompany87,005US$1.22
03 Nov 25SellUS$251,349MPM BioImpact LLCCompany189,356US$1.43
03 Nov 25SellUS$140,287BioImpact Capital LLCCompany105,687US$1.43
29 Oct 25SellUS$255,849MPM BioImpact LLCCompany158,195US$1.72
29 Oct 25SellUS$159,906BioImpact Capital LLCCompany98,872US$1.72

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of HOWL?
Owner TypeNumber of SharesOwnership Percentage
Individual Insiders682,2731.4%
VC/PE Firms6,116,14012.6%
Institutions8,891,84818.3%
General Public32,906,55667.7%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 31.58% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
12.6%
RA Capital Management, L.P.
6,116,140US$2.3m-8.46%0.03%
3.45%
Longwood Fund
1,677,082US$639.0k0%100.0%
2.51%
Vanguard Capital Management, LLC
1,217,976US$464.0k0%no data
1.35%
Lynx1 Capital Management LP
657,786US$250.6k0.28%0.04%
1.35%
BioImpact Capital LLC
655,471US$249.7k-45.8%100.0%
1.33%
Daniel Hicklin
647,047US$246.5k0%no data
1.29%
Sphera Funds Management Ltd
626,810US$238.8k0%0.03%
1.21%
DC Investments Management, LLC
589,102US$224.4k0%0.08%
1.16%
Squadron Capital Management Llc
563,535US$214.7k0%0.09%
1.06%
Renaissance Technologies LLC
516,218US$196.7k-23.8%no data
0.8%
Geode Capital Management, LLC
389,487US$148.4k16%no data
0.78%
MPM BioImpact LLC
377,211US$143.7k-68.8%0.01%
0.5%
Merrill Lynch, Pierce, Fenner & Smith Incorporated
241,034US$91.8k5.7%no data
0.32%
Vanguard Fiduciary Trust Company
157,726US$60.1k-12.2%no data
0.27%
Millennium Management LLC
132,050US$50.3k-45%no data
0.25%
State Street Global Advisors, Inc.
119,168US$45.4k0%no data
0.21%
BlackRock, Inc.
101,608US$38.7k-0.03%no data
0.18%
Northern Trust Global Investments
86,851US$33.1k0%no data
0.18%
Alyeska Investment Group, L.P.
86,554US$33.0k-63.3%no data
0.17%
Jane Street Group, LLC
82,836US$31.6k-47.4%no data
0.16%
Bridgeway Capital Management, LLC
77,000US$29.3k0%no data
0.14%
BBVA Asset Management, S.A., S.G.I.I.C
70,032US$26.7k0%no data
0.14%
UBS Asset Management AG
66,857US$25.5k10.1%no data
0.1%
XTX Markets Limited
50,929US$19.4k0%no data
0.079%
The Goldman Sachs Group, Inc.
38,266US$14.6k12.3%no data

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/06/14 14:27
End of Day Share Price 2026/06/12 00:00
Earnings2026/03/31
Annual Earnings2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Werewolf Therapeutics, Inc. is covered by 8 analysts. 1 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Jason ZemanskyBofA Global Research
Maneka MirchandaneyEvercore ISI
Andres MaldonadoH.C. Wainwright & Co.