Pioneer Acquisition I Corp Unit(PACHU) - Prospectus

As filed with the U.S. Securities and Exchange Commission on May 29, 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 Pioneer Acquisition I Corp (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Cayman Islands 6770 N/A (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identification Number) Mitchell Cre ...