Frazier Life Sciences Acquisition Corp. II
FLSC- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002153598
In the last 90 days, Frazier Life Sciences Acquisition Corp. II insiders filed 1 open-market purchase and 0 sales; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.
Holders of 5% or more of FLSC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Frazier Life Sciences Acquisition Corp. II, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Frazier Life Sciences Holdings II LLC | 13D | 20.50%1.98M shares | New | Oct 21, 20261 filing | Oct 21, 2026 | SEC |
| Ra Capital Management, L.P. | 13G | 9.00%700.0K shares | New | Oct 22, 20261 filing | Oct 22, 2026 | SEC |
| Deep Track Capital, LP | 13G | 8.97%700.0K shares | New | Oct 21, 20261 filing | Oct 21, 2026 | SEC |
| Coastlands Capital LP | 13G | 6.41%500.0K shares | New | Oct 16, 20261 filing | Oct 16, 2026 | SEC |
| Biotechnology Value Fund L P | 13G | 6.40%500.0K shares | New | Oct 21, 20261 filing | Oct 21, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
5 Schedule 13D and 13G filings on Frazier Life Sciences Acquisition Corp. II, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 22, 20264:07 PM ET | Ra Capital Management, L.P.and 3 others | 13G | 9.00%700.0K shares | New | Oct 15, 2026 | SEC |
| Oct 21, 20265:37 PM ET | Frazier Life Sciences Holdings II LLCand 4 others | 13D | 20.50%1.98M shares | New | Oct 15, 2026 | SEC |
| Oct 21, 20265:29 PM ET | Biotechnology Value Fund L Pand 9 others | 13G | 6.40%500.0K shares | New | Oct 14, 2026 | SEC |
| Oct 21, 20264:15 PM ET | Deep Track Capital, LPand 3 others | 13G | 8.97%700.0K shares | New | Oct 14, 2026 | SEC |
| Oct 16, 202610:35 AM ET | Coastlands Capital LPand 4 others | 13G | 6.41%500.0K shares | New | Oct 15, 2026 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Frazier Life Sciences Acquisition Corp. II shares.
No Form 144 notices for Frazier Life Sciences Acquisition Corp. II are on file.