Sign in

TRXB on Nasdaq

TRex Bio, Inc.

TRex Bio, Inc. is an American biological products company, incorporated in Delaware.1 It is headquartered in South San Francisco, California.1 Its shares trade on Nasdaq under the symbol TRXB.1

Price unavailable

Last updated Oct 21, 2026.

Overview

Compare with another stock.

  • TickerTRXB on Nasdaq1
  • IndustryBiological Products, (No Diagnostic Substances)1
  • HeadquartersSouth San Francisco, California1
  • Incorporated inDE2
  • Business addressC/O Trex Bio, Inc., 269 East Grand Avenue Suite 300, South San Francisco, Ca2
  • Filer category, Emerging growth company2

See how the biggest companies compare on our leaderboards

Corporate structure

TRex Bio, Inc. sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of TRex Bio, Inc.

  • TRex Bio, Inc. South San Francisco, California

Built from major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Timeline

  1. Oct 13, 20268-K Bylaws or fiscal year changed3

Filings

34 filings to the SEC since October 2021: 1 major events, 22 insider forms, 1 large holders, 10 other. The latest 20:

  1. Oct 15, 20264 EDGAR
  2. Oct 15, 2026SCHEDULE 13G EDGAR
  3. Oct 13, 20264 EDGAR
  4. Oct 13, 20264 EDGAR
  5. Oct 13, 20268-K EDGAR
  6. Oct 9, 2026S-8 EDGAR
  7. Oct 9, 2026424B4 EDGAR
  8. Oct 8, 2026EFFECT EDGAR
  9. Oct 8, 20263 EDGAR
  10. Oct 8, 20263 EDGAR
  11. Oct 8, 2026CERT EDGAR
  12. Oct 8, 20264 EDGAR
  13. Oct 8, 20264 EDGAR
  14. Oct 8, 20264 EDGAR
  15. Oct 8, 20264 EDGAR
  16. Oct 8, 20264 EDGAR
  17. Oct 8, 20264 EDGAR
  18. Oct 8, 20263 EDGAR
  19. Oct 8, 20263 EDGAR
  20. Oct 8, 20263 EDGAR

The 34 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

SEC filer profile

How TRex Bio, Inc. is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

  • Name on EDGARTRex Bio, Inc.1
  • CIK0002139097
  • Filer status<br>emerging growth company1
  • Incorporated inDelaware1
  • Fiscal year endsDecember 311
  • Industry code (SIC)2836 Biological Products, (No Diagnostic Substances)1
  • SEC reviewing officeOffice of Life Sciences, Division of Corporation Finance1
  • Business addressC/O Trex Bio, Inc., 269 East Grand Avenue Suite 300, South San Francisco, CA1
  • Phone(650) 567-55821
  • On EDGAR sinceJun 26, 20261
  • Filings35 in all: 3 (14), 4 (9), DRS/A (2), 424B4 (1), 8-A12B (1), 8-K (1), CERT (1), DRS (1)1
    All 13 form types

    EFFECT (1), S-1 (1), S-1/A (1), S-8 (1), SCHEDULE 13G (1)

  • Latest filingsLatest 8-K (8-K) Oct 13, 2026

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3
  4. 4