HilleVax, Inc.
HLVXDelisted Sep 17, 2025- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001888012
HilleVax, Inc. was delisted on Sep 17, 2025; its insiders filed their last Form 4 on Sep 19, 2025; 74 institutions reported holding it in 13F filings for Q2 2025, worth $82.5M in total; no superinvestor held it.
Holders of 5% or more of HLVX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of HilleVax, Inc., largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of HilleVax, Inc. on Schedule 13D or 13G.
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
15 Schedule 13D and 13G filings on HilleVax, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 14, 20254:19 PM ET | EcoR1 Capital, LLCand 2 others | 13G/A | 0.00%0 shares | −5.80 ppfrom 5.80%Below 5% | Sep 30, 2025 | SEC |
| Sep 19, 20254:15 PM ET | Tang Capital Management LLCand 6 others | 13D/A | 0.00%0 shares | −9.80 ppfrom 9.80%Below 5% | Sep 17, 2025 | SEC |
| Sep 19, 20257:22 AM ET | Takeda Pharmaceutical Co Ltdand 1 other | 13D/A | 0.00%0 shares | –Below 5% | Sep 17, 2025 | SEC |
| Sep 17, 20255:21 PM ET | Frazier Life Sciences Public Fund, L.P.and 16 others | 13D/A | 0.00%0 shares | –Below 5% | Sep 17, 2025 | SEC |
| Jul 24, 20255:30 PM ET | EcoR1 Capital, LLCand 2 others | 13G | 5.80%2.89M shares | New | Jul 17, 2025 | SEC |
| May 2, 20254:15 PM ET | Tang Capital Management LLCand 6 others | 13D | 9.80%4.92M shares | New | May 2, 2025 | SEC |
| Feb 14, 2023 | Ra Capital Management, L.P. | 13GOld format | – | New | – | SEC |
| Feb 10, 20234:16 PM ET | Carlyle Group Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | Flynn James E | 13G/AOld format | – | – | – | SEC |
| Sep 8, 2022 | Frazier Life Sciences Public Fund, L.P. | 13D/AOld format | – | – | – | SEC |
| May 13, 2022 | Abingworth LLP | 13GOld format | – | New | – | SEC |
| May 13, 2022 | Lightspeed Venture Partners Select IV, L.P. | 13GOld format | – | New | – | SEC |
| May 9, 2022 | Takeda Pharmaceutical Co Ltd | 13DOld format | – | New | – | SEC |
| May 6, 2022 | Frazier Life Sciences Public Fund, L.P. | 13DOld format | – | New | – | SEC |
| May 3, 2022 | Flynn James E | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell HilleVax, Inc. shares.
No Form 144 notices for HilleVax, Inc. are on file.