Filed: 5/14/2026ACC: 0001104659-26-061232
📋 What this filing means
ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC filed this quarterly 13F‑HR report disclosing 6 equity positions with a total reported market value of $790.03M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
6
Positions
$790.03M
Total AUM (reported)
21.45M
Total Shares
Allocation by class
COMMON STOCK$790.03M100.0%
Portfolio Concentration
Top 3$666.93M84.4%
4–10$123.10M15.6%
Top 3 weight
84.4%
Top 10 weight
100.0%
Voting Authority Distribution
Total shares with voting rights: 21.45M
Sole
Full voting authority
21.45M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole6
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings6
Rows:
Kymera Therapeutics, Inc.
SOLEShares4.58M
TypeSH
Market value$381.30M
48.26%
Sole
4.58M
Shared
0.00
None
0.00
Dyne Therapeutics, Inc.
SOLEShares9.13M
TypeSH
Market value$165.54M
20.95%
Sole
9.13M
Shared
0.00
None
0.00
Sionna Therapeutics, Inc.
SOLEShares3M
TypeSH
Market value$120.09M
15.20%
Sole
3M
Shared
0.00
None
0.00
Disc Medicine, Inc.
SOLEShares1.51M
TypeSH
Market value$96.80M
12.25%
Sole
1.51M
Shared
0.00
None
0.00
Q32 Bio, Inc.
SOLEShares2.09M
TypeSH
Market value$13.43M
1.70%
Sole
2.09M
Shared
0.00
None
0.00
Korro Bio, Inc.
SOLEShares1.14M
TypeSH
Market value$12.87M
1.63%
Sole
1.14M
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
Kymera Therapeutics, Inc.SOLE | Common Stock | 4.58M | SH | $381.30M 48.26% | 4.58M | 0.00 | 0.00 |
Dyne Therapeutics, Inc.SOLE | Common Stock | 9.13M | SH | $165.54M 20.95% | 9.13M | 0.00 | 0.00 |
Sionna Therapeutics, Inc.SOLE | Common Stock | 3M | SH | $120.09M 15.20% | 3M | 0.00 | 0.00 |
Disc Medicine, Inc.SOLE | Common Stock | 1.51M | SH | $96.80M 12.25% | 1.51M | 0.00 | 0.00 |
Q32 Bio, Inc.SOLE | Common Stock | 2.09M | SH | $13.43M 1.70% | 2.09M | 0.00 | 0.00 |
Korro Bio, Inc.SOLE | Common Stock | 1.14M | SH | $12.87M 1.63% | 1.14M | 0.00 | 0.00 |