MPM BioImpact LLC - Insider Non-Derivative Transactions at Werewolf Therapeutics, Inc. (HOWL) - (SEC)

Updated on March 12, 2026.

According to recent SEC insider information filed on Dec 4, 2025, MPM BioImpact LLC's relationship to Werewolf Therapeutics, Inc. (HOWL) is Other, and currently has 4,784,111 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other HOWL insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

MPM BioImpact LLC - Insider Non-Derivative Transactions of HOWL Common Stock

MPM BioImpact LLC - Insider Non-Derivative Transactions at HOWL

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Dec 5, 2025	Sell -- (Common Stock)	83230	0.97	4784111
Dec 4, 2025	Sell -- (Common Stock)	57225	0.87	4867341
Dec 3, 2025	Sell -- (Common Stock)	59277	0.89	4924566
Nov 7, 2025	Sell -- (Common Stock)	54452	1.21	5904720
Nov 6, 2025	Sell -- (Common Stock)	47950	1.22	5959172
Nov 5, 2025	Sell -- (Common Stock)	140488	1.22	6007122