As filed with the Securities and Exchange Commission on June 26, 2024. Registration No. 333-280323 Delaware 2834 82-4369909 (I.R.S. Employer Identification Number) (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) Amendment No. 2 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 GRI BIO, INC. (Exact name of registrant as specified in its charter) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 222 ...

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 GRI BIO, INC. As filed with the Securities and Exchange Commission on June 25, 2024. Registration No. 333-280323 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to FORM S-1 (Exact name of registrant as specified in its charter) (Primary Standard Industrial Classification Code Number) Delaware 2834 82-4369909 (I.R.S. Employer (State or other jurisdiction of incorporation or organization) 2223 Avenida de la Playa, ...