| Issuer | % of Class | Filed | ||||
|---|---|---|---|---|---|---|
| Schedule 13D · 2 securities · may seek to influence control | ||||||
|
Korro Bio, Inc.
13D/A
KRRO · 500946108
|
4.9% |
8/4/2026
Event 6/24/2026
|
||||
| Atlas Venture Fund XI, L.P. | 4.9% | |||||
| Atlas Venture Associates XI, L.P. | 4.9% | |||||
| Atlas Venture Associates XI, LLC | 4.9% | |||||
| Atlas Venture Opportunity Fund II, L.P. | 1.0% | |||||
| Atlas Venture Associates Opportunity II, L.P. | 1.0% | |||||
| Atlas Venture Associates Opportunity II, LLC | 1.0% | |||||
|
Sionna Therapeutics, Inc.
13D/A
SION · 829401108
|
5.4% |
10/20/2025
Event 10/16/2025
|
||||
| Atlas Venture Fund XI, L.P. | 5.4% | |||||
| Atlas Venture Associates XI, L.P. | 5.4% | |||||
| Atlas Venture Associates XI, LLC | 5.4% | |||||
| Atlas Venture Opportunity Fund II, L.P. | 1.6% | |||||
| Atlas Venture Associates Opportunity II, LP | 1.6% | |||||
| Atlas Venture Associates Opportunity II, LLC | 1.6% | |||||
| Schedule 13G · 2 securities · passive | ||||||
|
Dyne Therapeutics, Inc.
13G/A
DYN · 26818M108
|
2.4% |
8/13/2026
Event 6/30/2026
|
||||
| Atlas Venture Fund XI, L.P. | 2.4% | |||||
| Atlas Venture Associates XI, L.P. | 2.4% | |||||
| Atlas Venture Associates XI, LLC | 2.4% | |||||
| Atlas Venture Opportunity Fund I, L.P. | 0.5% | |||||
| Atlas Venture Associates Opportunity I, L.P. | 0.5% | |||||
| Atlas Venture Associates Opportunity I, LLC | 0.5% | |||||
| Atlas Venture Opportunity Fund II, L.P. | 0.7% | |||||
| Atlas Venture Associates Opportunity II, L.P. | 0.7% | |||||
| Atlas Venture Associates Opportunity II, LLC | 0.7% | |||||
|
Day One Biopharmaceuticals, Inc.
13G/A
DAWN · 23954D109
|
0% |
5/14/2026
Event 3/31/2026
|
||||
| Atlas Venture Fund XI, L.P. | 0% | |||||
| Atlas Venture Associates XI, L.P. | 0% | |||||
| Atlas Venture Associates XI, LLC | 0% | |||||
| Atlas Venture Opportunity Fund I, L.P. | 0% | |||||
| Atlas Venture Associates Opportunity I, L.P. | 0% | |||||
| Atlas Venture Associates Opportunity I, LLC | 0% | |||||
| Atlas Venture Opportunity Fund II, L.P. | 0% | |||||
| Atlas Venture Associates Opportunity II, L.P. | 0% | |||||
| Atlas Venture Associates Opportunity II, LLC | 0% | |||||
Includes filings since 12/18/2024, when the SEC began requiring structured 13D and 13G data.