VALLON PHARMACEU(VLON) - Prospectus

As filed with the Securities and Exchange Commission on December 8, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 GRI BIO, INC. (Exact name of registrant as specified in its charter) (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identification Number) (State or other jurisdiction of incorporation or organization) 2223 Avenida de la Playa, #208 La Jolla, CA 92037 ...