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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 2025-06-30, filed 2025-08-12, with 11 holding rows worth $662,354,749.

Accession
0001104659-25-076898
Filed
2025-08-12
Accepted by EDGAR
acceptance time not in the bulk data set
Ingested
Source
SEC quarterly data set

Original filing

13F report for Q2 2025

A holdings report, 11 entries on the cover page, a total value of $662,354,749 stated on the cover page (in dollars after the unit check, H1), rows summing to $662,354,749 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$213,681,602dollars as filed
DISC MEDICINE INC COM254604101Stock2,384,456$126,280,790dollars as filed
DYNE THERAPEUTICS INC COM26818M108Stock9,130,465$86,922,027dollars as filed
SIONNA THERAPEUTICS INC829401108COMMON STOCK3,694,020$64,091,247dollars as filed
THIRD HARMONIC BIO INC88427A107COM10,402,286$56,484,413dollars as filed
VIGIL NEUROSCIENCE INC92673K108COM5,836,874$46,403,148dollars as filed
Day One Biopharmaceuticals Inc23954D109Common Stock6,430,257$41,796,671dollars as filed
KORRO BIO INC500946108COMMON STOCK1,137,149$14,202,991dollars as filed
IKENA ONCOLOGY INC45175G108COM5,018,178$6,724,359dollars as filed
Q32 BIO INC746964105Common Stock2,092,106$3,117,238dollars as filed
GENERATION BIO CO37148K100COM8,279,484$2,650,263dollars as filed

Amendment chain

FilingRoleFiledAcceptedIngested
13F-HR 0001104659-25-076898this filing2025-08-12acceptance time not in the bulk data set