TRex Bio, Inc.
TRXB- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0002139097
In the last 90 days, TRex Bio, Inc. insiders filed 2 open-market purchases and 0 sales; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.
Holders of 5% or more of TRXB
Holders whose latest Schedule 13D or 13G filing reports 5% or more of TRex Bio, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Eli Lilly & Co | 13D | 19.90%5.48M shares | New | Oct 16, 20261 filing | Oct 16, 2026 | SEC |
| Pfizer Inc | 13G | 7.20%1.97M shares | New | Oct 16, 20261 filing | Oct 16, 2026 | SEC |
| SV Biotech Crossover Opportunities Fund LP | 13D | 7.00%1.92M shares | New | Oct 16, 20261 filing | Oct 16, 2026 | SEC |
| Johnson & Johnson Innovation - JJDC, Inc. | 13G | 5.30%1.48M shares | New | Oct 15, 20261 filing | Oct 15, 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
4 Schedule 13D and 13G filings on TRex Bio, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 16, 20266:02 PM ET | Pfizer Incand 1 other | 13G | 7.20%1.97M shares | New | Oct 8, 2026 | SEC |
| Oct 16, 20264:19 PM ET | Eli Lilly & Co | 13D | 19.90%5.48M shares | New | Oct 13, 2026 | SEC |
| Oct 16, 20263:53 PM ET | SV Biotech Crossover Opportunities Fund LPand 1 other | 13D | 7.00%1.92M shares | New | Oct 8, 2026 | SEC |
| Oct 15, 20261:21 PM ET | Johnson & Johnson Innovation - JJDC, Inc.and 1 other | 13G | 5.30%1.48M shares | New | Oct 13, 2026 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell TRex Bio, Inc. shares.
No Form 144 notices for TRex Bio, Inc. are on file.