Table of Contents As filed with the United States Securities and Exchange Commission on March 24, 2026 Registration 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Research Alliance Corporation III (Exact name of registrant as specified in its charter) Cayman Islands 6770 98-1918931 (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) (I.R.S. Employ ...