Day One Biopharmaceuticals, Inc. Common Stock 23954D109 45333312 6430257 SH SOLE 6430257 0 0 Disc Medicine, Inc. Common Stock 254604101 141584131 2142617 SH SOLE 2142617 0 0 Dyne Therapeutics, Inc. Common Stock 26818M108 115500382 9130465 SH SOLE 9130465 0 0 Generation Bio, Co. Common Stock 37148K100 5067030 827946 SH SOLE 827946 0 0 ImageneBio, Inc. Common Stock 45175G207 3079184 377814 SH SOLE 377814 0 0 Korro Bio, Inc. Common Stock 500946108 54458066 1137149 SH SOLE 1137149 0 0 Kymera Therapeutics, Inc. Common Stock 501575104 277139749 4896462 SH SOLE 4896462 0 0 Q32 Bio, Inc. Common Stock 746964105 4142370 2092106 SH SOLE 2092106 0 0 Sionna Therapeutics, Inc. Common Stock 829401108 106332649 3615527 SH SOLE 3615527 0 0