AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 As filed with the Securities and Exchange Commission on November 20, 2025. Registration No. 333-290850 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 _________________________ Cardinal Infrastructure Group Inc. (Exact name of registrant as specified in its charter) _________________________ | Delaware | 1600 | 39-3180206 | | --- | --- | --- | | (State or other jurisdiction of | (Primary Standard Indu ...

As filed with the Securities and Exchange Commission on October 14, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 _________________________ Cardinal Infrastructure Group Inc. (Exact name of registrant as specified in its charter) _________________________ | Delaware | 1600 | 39-3180206 | | --- | --- | --- | | (State or other jurisdiction of | (Primary Standard Industrial | (I.R.S. Employer ...