Clear Street(CSIG) - Prospectus(update)

Table of Contents As filed with the Securities and Exchange Commission on February 11, 2026 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 4 to FORM S-1 REGISTRATION STATEMENT UNDER Clear Street Group Inc. (Exact Name of Registrant as Specified in Its Charter) (State or Other Jurisdiction of Incorporation or Organization) Delaware 6211 86-2376416 (Primary Standard Industrial Classification Code Number) (I.R.S. Employer Identification Number) 150 Greenwich Street, 45th ...