Atlas Venture Life Science Advisors, Llc

Institutional manager — quarterly 13F holdings, Q ending 2026-03-31

Reported value

$790.0M

Q ending 2026-03-31

Prior quarter

$865.2M

Q ending 2025-12-31

Change

-8.7% QoQ · +51.4% YoY

Positions

reported holdings

Largest positions

All 6 reported positions, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.

Holding	Ticker	Type	Value ▼	Shares
Kymera Therapeutics, Inc.	KYMR	Shares	$381.3M	4.6M
Dyne Therapeutics, Inc.	DYN	Shares	$165.5M	9.1M
Sionna Therapeutics, Inc.	SION	Shares	$120.1M	3.0M
Disc Medicine, Inc.	IRON	Shares	$96.8M	1.5M
Q32 Bio, Inc.	QTTB	Shares	$13.4M	2.1M
Korro Bio, Inc.	KRRO	Shares	$12.9M	1.1M

Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.