Sionna Therapeutics, Inc. · NASDAQ:SION
Atlas Venture Fund XI, L.P. reported a 6.50% stake in Sionna Therapeutics, Inc. (Schedule 13D)
Event Feb 10, 2025 · Filed Feb 18, 2025
Atlas Venture Fund XI, L.P. reported a 6.50% stake in Sionna Therapeutics, Inc., 2,886,293 shares, with active intent on Feb 10, 2025. Filed Feb 18, 2025 (Schedule 13D).
- Stake
- 6.50%
- Shares
- 2,886,293
- Intent
- Active
- What changed
- Crossed above 5%
- Filed together
- 6 holders
The filing in full
| Holder | Stake | Shares |
|---|---|---|
| Atlas Venture Fund XI, L.P. | 6.50% | 2,886,293 |
| Atlas Venture Associates XI, L.P. | 6.50% | 2,886,293 |
| Atlas Venture Associates XI, LLC | 6.50% | 2,886,293 |
| Atlas Venture Opportunity Fund II, L.P. | 1.80% | 807,727 |
| Atlas Venture Associates Opportunity II, LP | 1.80% | 807,727 |
| Atlas Venture Associates Opportunity II, LLC | 1.80% | 807,727 |
Source
Related
- Sionna Therapeutics, Inc.
- Atlas Venture Fund XI, L.P.
- Sionna Therapeutics, Inc. shareholders
- Schedule 13D/A · Atlas Venture Fund XI, L.P. · Oct 20, 2025
- Form 4 · Ra Capital Management, L.P. · Sep 21, 2026
- Schedule 13D/A · Ra Capital Management, L.P. · Sep 21, 2026
- Form 4 · Ridloff Elena · Sep 18, 2026
- Form 4 · McKee Charlotte · Sep 18, 2026
- Form 4 · Fitzpatrick Jennifer · Sep 18, 2026