As filed with the Securities and Exchange Commission on December 16, 2025 Registration No. 333-292009 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 PRE-EFFECTIVE AMENDMENT No. 1 to FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 FOCUS UNIVERSAL INC. (Exact name of registrant as specified in its charter) | Nevada | 3823 | 46-3355876 | | --- | --- | --- | | (State or other jurisdiction of | (Primary Standard Industrial | (I.R.S. Employer | | incorporation or organiza ...

| Nevada | 3823 | 46-3355876 | | --- | --- | --- | | (State or other jurisdiction of | (Primary Standard Industrial | (I.R.S. Employer | | incorporation or organization) | Classification Code Number) | Identification No.) | 2311 East Locust Court, Ontario, CA 91761 As filed with the Securities and Exchange Commission on December 8, 2025 (Address of principal executive offices) (Zip Code) Registration No. 333-[------] UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATI ...