Legato Merger(LEGOU) - Prospectus(update)

(Exact name of registrant as specified in its charter) Cayman Islands 6770 98-1880768 (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) As filed with the U.S. Securities and Exchange Commission on January 9, 2026. Registration No. 333-292320 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Legato Merger Corp. IV (I.R.S. Employer Iden ...