Phoenix Biotech Acquisition (PBAX) - Prospectus

As filed with the Securities and Exchange Commission on December 5, 2025. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 CERO THERAPEUTICS HOLDINGS, INC. (Exact name of registrant as specified in its charter) Delaware 2836 81-4182129 (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identification No.) 201 Haskins Way, Suite 230 Sout ...