MPM ASSET MANAGEMENT LLC

Est. AUM

$44.51B

13F long equity, this entity only

Positions

Period

Sep 2025 (Q3)

SEC EDGAR

Sep 2025 (Q3)

#	Issuer	Class	Value	Shares	% Portfolio	Discretion
1	Entrada Therapeutics, Inc.	Common	$25.41B	4381062	57.09%	SOLE
2	Dyne Therapeutics, Inc.	Common	$8.63B	682376	19.40%	SOLE
3	Werewolf Therapeutics, Inc.	Common	$8.49B	4309860	19.08%	SOLE
4	Repare Therapeutics, Inc.	Common	$1.97B	1121318	4.43%	SOLE

Values in USD (reported in $thousands on 13F). Source: SEC EDGAR.