SOLUNA HOLDINGS(SLNHP) - Prospectus

As filed with the Securities and Exchange Commission on October 27, 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 SOLUNA HOLDINGS, INC. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) Nevada 7374 14-1462255 (I.R.S. Employer Identification Number) 325 Washington Avenu ...