As filed with the Securities and Exchange Commission on August 4, 2023 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 iBio, Inc. (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) Delaware 2834 26-279813 (Primary Standard Industrial Classification Code Number) 8800 HSC Parkway Bryan, Texas 77807 (858) 925-8215 (I.R.S. Employer Iden ...