Peter Hirth - 08 Oct 2026 Form 3 Insider Report for TRex Bio, Inc.

Reporting relationship: Director
Issuer ticker: N/A
Reported as of: 08 Oct 2026
Net transaction value: $0
SEC form: 3
Accepted by SEC: 08 Oct 2026, 21:47:05 UTC
Prior SEC filing: 29 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Brandon Hants, Attorney-in-Fact

Key filing fact

Peter Hirth filed Form 3 for TRex Bio, Inc. on 08 Oct 2026.

Key facts

This page summarizes Peter Hirth's Form 3 filing for TRex Bio, Inc..
0 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 08 Oct 2026, 21:47.

Change

Previous filing in this sequence was filed on 29 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (1)

CIK 0001813780 Primary reporting owner

Hirth Peter

Relationship: Director
Address: C/O TREX BIO, INC., 269 EAST GRAND AVENUE, SUITE 300, SOUTH SAN FRANCISCO
Signature: /s/ Brandon Hants, Attorney-in-Fact
Signature date: 08 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

No ticker holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 38,202
Date: 08 Oct 2026
Ownership: Direct

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

No ticker holding Derivative

Stock Options (Right to Buy)

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 08 Oct 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 7,520
Exercise price: $1.47
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The option is fully vested and exercisable as of the date hereof.

SEC remarks

Exhibit List: Exhibit 24 - Power of Attorney

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