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13F-HR filed by Atlas Venture Life Science Advisors, LLC

Atlas Venture Life Science Advisors, LLC filed this 13F-HR for the quarter ended 2025-09-30, filed 2025-11-13, with 9 holding rows worth $752,636,873.

Accession
0001104659-25-111321
Filed
2025-11-13
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q3 2025

A holdings report, 9 entries on the cover page, a total value of $752,636,873 stated on the cover page (in dollars after the unit check, H1), rows summing to $752,636,873 with VALUE read as dollars as filed, 13F file number 028-22531. The quarter's positions are built on this report. The resolved quarter.

The information table after summing rows of one CUSIP and put or call (H4), with the CUSIP and issuer name as filed. Values in dollars after the unit check (method).

Issuer as filedCUSIPClassAmountValueValue read asType
KYMERA THERAPEUTICS INC501575104COM4,896,462$277,139,749dollars as filed
DISC MEDICINE INC COM254604101Stock2,142,617$141,584,131dollars as filed
DYNE THERAPEUTICS INC COM26818M108Stock9,130,465$115,500,382dollars as filed
SIONNA THERAPEUTICS INC829401108COMMON STOCK3,615,527$106,332,649dollars as filed
KORRO BIO INC500946108COMMON STOCK1,137,149$54,458,066dollars as filed
Day One Biopharmaceuticals Inc23954D109Common Stock6,430,257$45,333,312dollars as filed
GENERATION BIO CO37148K100COM827,946$5,067,030dollars as filed
Q32 BIO INC746964105Common Stock2,092,106$4,142,370dollars as filed
IMAGENEBIO INC45175G207CMN377,814$3,079,184dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001104659-25-111321this filing2025-11-13acceptance time not in the bulk data set