Werewolf Therapeutics, Inc. (HOWL) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-07-08

Werewolf Therapeutics, Inc. (HOWL) has filed 17 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-08. 1 Form 8-K material event filings were reported by HOWL in the last 90 days. 48 Form 144 notices of proposed sale were filed for HOWL stock. InsiderAlpha tracks every HOWL SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Werewolf Therapeutics, Inc. (HOWL)

SEC CIK0001785530

90-Day SEC Filing Activity

Form 4 filings (90d)17
Form 8-K filings (90d)1
Form 144 notices (90d)48
Latest Form 4 filing2026-07-08

Recent HOWL Insider Transactions (Form 4)

DateInsiderRoleTransactionSharesPriceValueFiling
EVNIN LUKEInsiderS — Open-market sale107.4K$0.31$33KSEC
EVNIN LUKEInsiderS — Open-market sale35.8K$0.32$11KSEC
EVNIN LUKEInsiderS — Open-market sale157.1K$0.30$47KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale27.7K$0.35$10KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale389.2K$0.35$136KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale9.9K$0.37$4KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale139.7K$0.37$52KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale120.2K$0.39$47KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale8.6K$0.39$3KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale11.3K$0.40$5KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale159.1K$0.40$64KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale17.4K$0.38$7KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale245.1K$0.38$93KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale42.9K$0.37$16KSEC
RA CAPITAL MANAGEMENT, L.P.InsiderS — Open-market sale3.1K$0.37$1KSEC

All transactions sourced from SEC EDGAR Form 4 filings for Werewolf Therapeutics, Inc. (HOWL). Updated in real time as new filings are submitted to the SEC.

Most-Active HOWL Insiders — Last 90 Days

InsiderForm 4 filingsTotal transaction value
EVNIN LUKE32$1.18M
RA CAPITAL MANAGEMENT, L.P.20$964K

Recent HOWL Form 8-K Material Events

Recent HOWL Form 144 Notices of Proposed Sale

Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.

Recent Insider Filings

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in HOWL insider filings:

POpen-market purchase by the insider
SOpen-market sale by the insider
AGrant, award, or other acquisition from the issuer
MExercise or conversion of derivative security (e.g. options)
FPayment of exercise price or tax liability via share withholding
GBona-fide gift of securities
DDisposition to the issuer (e.g. share buyback participation)
JOther acquisition or disposition
XExercise of in-the-money or at-the-money derivative security
CConversion of derivative security
VTransaction voluntarily reported earlier than required

HOWL Insider Trading — FAQ

What is the latest insider trade for HOWL?
Werewolf Therapeutics, Inc. (HOWL) had 17 insider filings in the last 90 days, with the most recent on 2026-07-08. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying HOWL stock?
0 insider purchases of HOWL were filed in the last 90 days.
How many insiders are selling HOWL stock?
0 insider sales of HOWL were filed in the last 90 days.
Where can I see HOWL SEC filings (Form 4, 10-K, 10-Q, 8-K)?
InsiderAlpha aggregates every HOWL SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live HOWL dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.