Public ownership evidence

Werewolf Therapeutics, Inc. Common Stock (HOWL) Ownership Disclosures

Read HOWL insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Recent Form 4 activity

No matching purchases, sales or awards were returned in this 90-day public filing window.

No records are available for this view.

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Rangeley Capital, LLC2026-06-302026-08-15100,000$35,990None
XTX Topco Ltd2026-06-302026-08-15271,478$97,705None
OSAIC HOLDINGS, INC.2026-06-302026-08-1550$18None
OSAIC HOLDINGS, INC.2026-06-302026-08-158,575$3,087None
Squarepoint Ops LLC2026-06-302026-08-15103,242$37,157None
JANE STREET GROUP, LLC2026-06-302026-08-15105,264$37,885None
JANE STREET GROUP, LLC2026-06-302026-08-15146,573$52,752None
SPHERA FUNDS MANAGEMENT LTD.2026-06-302026-08-15626,810$225,589None
Verdad Advisers, LP2026-06-302026-08-15348,709$125,500None
DC Funds, LP2026-06-302026-08-15589,102$212,018None
MILLENNIUM MANAGEMENT LLC2026-06-302026-08-1562,055$22,334None
MPM BIOIMPACT LLC2026-06-302026-08-1580,142$28,851None
Balyasny Asset Management L.P.2026-06-302026-08-151,790,089$644,253None
Alyeska Investment Group, L.P.2026-06-302026-08-1586,554$31,151None
RA CAPITAL MANAGEMENT, L.P.2026-06-302026-08-152,387,744$859,349None
CITADEL ADVISORS LLC2026-06-302026-08-1515,500$5,578Put
CITADEL ADVISORS LLC2026-06-302026-08-1575,000$26,993Call
Larson Financial Group LLC2026-06-302026-08-1513,052$4,697None
GROUP ONE TRADING LLC2026-06-302026-08-151,871$673None
TWO SIGMA INVESTMENTS, LP2026-06-302026-08-1527,300$9,825None
GOLDMAN SACHS GROUP INC2026-06-302026-08-1520,023$7,206None
BARCLAYS PLC2026-06-302026-08-1513,235$4,763None
BANK OF AMERICA CORP /DE/2026-06-302026-08-15288,296$103,498None
BANK OF AMERICA CORP /DE/2026-06-302026-08-1523,206$8,331None
VANGUARD CAPITAL MANAGEMENT LLC2026-06-302026-08-141,217,976$438,471None
Lynx1 Capital Management LP2026-06-302026-08-14657,786$236,737None
UBS Group AG2026-06-302026-08-14215,736$77,665None
UBS Group AG2026-06-302026-08-14102$37None
Virtu Financial LLC2026-06-302026-08-1445,467$16,000None
BNP PARIBAS FINANCIAL MARKETS2026-06-302026-08-14790$284None
RENAISSANCE TECHNOLOGIES LLC2026-06-302026-08-14674,632$242,800None
VANGUARD FIDUCIARY TRUST CO2026-06-302026-08-14157,726$56,781None
Jump Financial, LLC2025-06-302026-08-144,503$4,908None
Jump Financial, LLC2025-06-302026-08-146,842$7,458None
MORGAN STANLEY2026-06-302026-08-1417,223$6,199None
MORGAN STANLEY2026-06-302026-08-141,885$678None
NORTHERN TRUST CORP2026-06-302026-08-1486,851$31,258None
Lynx1 Capital Management LP2026-06-302026-08-13657,786$236,737None
Optiver Holding B.V.2026-06-302026-08-1322$8None
Cetera Investment Advisers2026-06-302026-08-1310,200$3,671None
SIMPLEX TRADING, LLC2026-06-302026-08-13255$91None
GEODE CAPITAL MANAGEMENT, LLC2026-06-302026-08-1362,051$22,332None
GEODE CAPITAL MANAGEMENT, LLC2026-06-302026-08-13273,764$98,563None
StoneX Group Inc.2026-06-302026-08-1320,000$9,000None
JPMORGAN CHASE & CO2026-06-302026-08-131,177$363None
JPMORGAN CHASE & CO2026-06-302026-08-13931$287None
Tower Research Capital LLC (TRC)2026-06-302026-08-129,897$3,562None
BlackRock, Inc.2026-06-302026-08-0871,700$25,805None
BlackRock, Inc.2026-06-302026-08-08250$90None
BlackRock, Inc.2026-06-302026-08-0829,623$10,661None

90-day public filing window, up to 50 source positions.

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.