TRex Bio, Inc. (TRXB)
Trex Bio, Inc. engages in the manufacture of immunotherapies for autoimmune and inflammatory diseases. It focuses on studying the regulation of tissue inflammation to develop breakthrough medicines. The company was founded by Houman Ashrafian, Adil Daud, Wilson Liao, Diane Mathis, Drew Pardoll, Michael Rosenblum, Alison Simmons, and Jim Wells in May 24, 2018 and is headquartered in South San Francisco, CA.
Sector: Biological Products, (No Diagnostic Substances)
Industry: Medical - Pharmaceuticals
TRex Bio Inc.
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
based on 27.45M shares outstanding
No company description available.
Leadership
Marion Johnston Erwin Jr.
Chairman & CEO
Ali Zarrin
Chief Scientific Officer & Executive Director of Drug Discovery
Laura Berner
Chief Operating Officer
Adil I. Daud
Co-Founder & Founding Scientific Advisor
Employees
--
Country
--
Sector
Healthcare
Website
--
| Insider | Title | Type | Shares | Value | Date |
|---|---|---|---|---|---|
 Alexandria Venture Investments, LLC | 10% Owner | Conversion of Derivative | 1.17M | -- | Oct 13, 2026 |
| Alexandria Venture Investments, LLC | 10% Owner | Purchase | 178.6K | $2.50M | Oct 13, 2026 |
| Alexandria Venture Investments, LLC | 10% Owner | Conversion of Derivative | 1.03M | -- | Oct 13, 2026 |
| Alexandria Venture Investments, LLC | 10% Owner | Conversion of Derivative | 3.48M | -- | Oct 13, 2026 |
 SVLSF VI, LLC | 10% Owner | Conversion of Derivative | 1.57M | -- | Oct 13, 2026 |
| SVLSF VI, LLC | 10% Owner | Conversion of Derivative | 475.4K | -- | Oct 13, 2026 |
| Name | Shares | % | Source |
|---|---|---|---|
ELI LILLY & Co · filed Oct 2026 | 875.0K+4.6M via conversion | 20.0% | 13D |
PFIZER INC. (13-5315170) · joint filing· may incl. warrants· filed Oct 2026 | 2.0M | 7.2% | 13G |
SV Biotech Crossover Opportunities Fund LP · joint filing· filed Oct 2026 | 957.1K+963.5K via conversion | 7.0% | 13D |
Johnson & Johnson Innovation - JJDC, Inc. · joint filing· may incl. warrants· filed Oct 2026 | 1.5M | 5.4% | 13G |
 Alexandria Venture Investments, LLC 10% Owner | 1.3M | 4.9% | FORM 4 |
 Gallagher Carol Giltner Director | 251.5K | 0.9% | FORM 4 |
 Berner Laura Chief Operating Officer | 168.6K | 0.6% | FORM 4 |
 MARCUS JOEL S Director | 41.9K | 0.2% | FORM 4 |
 Hirth Peter Director | 38.2K | 0.1% | FORM 4 |
 Zarrin Ali Chief Scientific Officer | 18.1K | 0.1% | FORM 4 |
Insiders
- Alexandria Venture Investments, LLC10% Owner
- SVLSF VI, LLC10% Owner
- MARCUS JOEL SDirector
- Gallagher Carol GiltnerDirector
- Gilmore Julie AnnDirector
- Coy Travis AlanDirector
- Ross Michael JayDirector
- Hirth PeterDirector
- Berner LauraChief Operating Officer
- Zarrin AliChief Scientific Officer
based on 27.45M shares outstanding
30d Avg
232.69K
60d Avg
232.69K
90d Avg
232.69K