Walter Marc Hertz - 18 Sep 2025 Form 4 Insider Report for GRI Bio, Inc. (GRI)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: GRI
Reported as of: 18 Sep 2025
Net transaction value: $0
SEC form: 4
Accepted by SEC: 22 Sep 2025, 16:05:36 UTC
Prior SEC filing: 27 Aug 2025
Source filing: View source filing
Reporting owner signature: /s/ Leanne Kelly, Attorney-in-Fact

Key filing fact

Walter Marc Hertz filed Form 4 for GRI Bio, Inc. (GRI) on 22 Sep 2025.

Key facts

This page summarizes Walter Marc Hertz's Form 4 filing for GRI Bio, Inc. (GRI).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 22 Sep 2025, 16:05.

Change

Previous filing in this sequence was filed on 27 Aug 2025.
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

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001971132 Primary reporting owner

Hertz Walter Marc

Relationship: Chief Executive Officer, Director
Address: C/O GRI BIO, INC., 2223 AVENIDA DE LA PLAYA, SUITE 208, LA JOLLA
Signature: /s/ Leanne Kelly, Attorney-in-Fact
Signature date: 22 Sep 2025

Reported derivative securities

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

GRI transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value: $0
Shares: +103,067
Change %
Price: $0.000000
Shares after: 103,067
Date: 18 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 103,067
Exercise price: $1.93
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

Options to purchase 76,469 shares vested in full upon the date of grant and options to purchase 26,598 shares will vest in 12 substantially equal quarterly installments such that the stock option is fully vested on the third anniversary of the date of grant.