Mpm Bioventures 2014, L.P.

Former 10% Owner | 10% Owner

3 companies

Insider Signal Score

Strong

Trades Analyzed

12M Win Rate

60.0%

Avg 3M Return

+33.5%

Avg 12M Return

+8.0%

Mpm Bioventures 2014, L.P. is a Former 10% Owner at Werewolf Therapeutics, Inc. with holdings across 3 companies. Recent SEC Form 4 filings include 0 buys and 29 sells.

Estimated insider holdings value: $33.0M based on current market prices.

Holdings by Company

HOWLDec 4, 2025

Current Shares4.78M

Value$2.97M

Net Activity-1,810,763

Bought: 125.8KSold: 1.94M

TRDADec 11, 2024

Current Shares4.38M

Value$30.01M

Net Activity+55.3K

Bought: 100.0KSold: 44.7K

RPTXJun 23, 2020

Current Shares1.80M

Est. Value-

Net Activity+250.0K

Bought: 250.0KSold: 0

Transaction History

Showing 10 filings

Date	Ticker	Role	Type	Shares	Price	Value	Chg%	3M	12M
Dec 4, 2025	HOWL Werewolf Therapeutics, Inc.	Former 10% Owner	Sell	199,732	$0.92	$183,275.38	-1.4%	-38.8%	-
Dec 1, 2025	HOWL Werewolf Therapeutics, Inc.	10% Owner	Sell	141,927	$0.96	$136,854.55	-0.9%	-36.4%	-
Nov 25, 2025	HOWL Werewolf Therapeutics, Inc.	10% Owner	Sell	195,666	$0.92	$179,551.05	-1.2%	-27.5%	-
Nov 20, 2025	HOWL Werewolf Therapeutics, Inc.	10% Owner	Sell	160,103	$0.92	$147,912.95	-1.0%	-22.9%	-
Nov 17, 2025	HOWL Werewolf Therapeutics, Inc.	10% Owner	Sell	209,652	$0.96	$200,665.13	-1.2%	-28.4%	-
Nov 12, 2025	HOWL Werewolf Therapeutics, Inc.	10% Owner	Sell	213,529	$1.13	$241,278.01	-0.9%	-34.2%	-
Nov 6, 2025	HOWL Werewolf Therapeutics, Inc.	10% Owner	Sell	242,890	$1.22	$295,781.28	-1.3%	-46.5%	-
Nov 3, 2025	HOWL Werewolf Therapeutics, Inc.	10% Owner	Sell	295,043	$1.33	$391,636.07	-1.5%	-48.2%	-
Oct 29, 2025	HOWL Werewolf Therapeutics, Inc.	10% Owner	Sell	276,017	$1.62	$446,403.00	-1.4%	-57.0%	-
Mar 27, 2025	HOWL Werewolf Therapeutics, Inc.	10% Owner	Sell	1,963	$1.05	$2,061.15	-	+11.7%	-27.0%

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Insider	Role	Shares	Value	Buys	Sells

Date	Ticker	Insider	Role	Type	Shares	Price	Value	Chg%	SEC