Howl insider plans sale of 6,840 shares

Howl received a Rule 144 notice for a planned sale of 6,840 shares of its common stock through Merrill Lynch in San Francisco.

Rhea-AI Filing Summary

Howl received a Rule 144 notice for a planned sale of 6,840 shares of its common stock through Merrill Lynch in San Francisco. The shares have an aggregate market value of $4,407.70 based on the filer’s disclosure and are listed as trading on NASDAQ. The issuer had 48,540,200 common shares outstanding at the time referenced. The seller originally acquired the 6,840 shares in a private placement from the issuer on 05/04/2021, paid in cash on the same date.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Howl (HOWL) Form 144 filing disclose?

It discloses a planned sale of 6,840 Howl common shares under Rule 144, to be executed through Merrill Lynch on the NASDAQ exchange.

How many Howl (HOWL) shares are planned to be sold and what is their value?

The notice covers 6,840 common shares with an aggregate market value of $4,407.70, as stated in the filing.

When and how were the Howl (HOWL) shares being sold under Rule 144 acquired?

The 6,840 shares were acquired on 05/04/2021 in a private placement from the issuer, with the purchase price paid in cash on the same date.

On which exchange are the Howl (HOWL) shares in this Form 144 listed?

The filing identifies the securities exchange for the common shares as NASDAQ.

How many Howl (HOWL) common shares were outstanding in the Form 144 disclosure?

The document reports 48,540,200 Howl common shares outstanding as of the referenced date.

Who is the broker for the planned Howl (HOWL) Rule 144 sale?

The broker named is Merrill Lynch, with an address at 555 California Street, 18th Floor, San Francisco, CA 94104.

What is the approximate date of sale for the Howl (HOWL) shares in this Form 144?

The approximate date of sale disclosed for the 6,840 common shares is 01/06/2026.

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Accepted by SEC EDGAR 01/06/2026 - 04:58 PM EST Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001609495
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Werewolf Therapeutics, Inc.
SEC File Number	001-40366
Address of Issuer	200 Talcott Avenue 2nd Floor Watertown MASSACHUSETTS 02472
Phone	6179520555
Name of Person for Whose Account the Securities are To Be Sold	MPM Asset Management Investors BV2014 LLC
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Shareholder

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Merrill Lynch 555 California Street 18th Floor San Francisco CA 94104	6840	4407.70	48540200	01/06/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/04/2021	Private Placement	Issuer			6840	05/04/2021	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks	Please see attached for securities sold over the last 3 months
Date of Notice	01/06/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/24/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Kristen Laguerre
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)