SCHEDULE 13G 0002091833 XXXXXXXX LIVE Class A Common Stock, par value $0.0001 per share 12/31/2025 0002079999 CARDINAL INFRASTRUCTURE GROUP INC. 14154A102 100 E. SIX FORKS RD SUITE 300 RALEIGH NC 27609 Rule 13d-1(d) Michael Bruce Rowe, Jr. X1 1834084.00 203617.00 1834084.00 203617.00 2038003.00 N 29.0 IN Rowe Family 2024 Irrevocable Trust U/A dated 3/13/24 NC 203617.00 0.00 203617.00 0.00 2038003.00 N 29.0 OO CARDINAL INFRASTRUCTURE GROUP INC. 100 E. SIX FORKS RD., SUITE 300, RALEIGH, NC. 27609 Michael Bruce Rowe, Jr. c/o Cardinal Infrastructure Group Inc. 100 E. Six Forks Rd. Suite 300 Raleigh, NC. 27609 United States of America. Y The ownership information presented below represents beneficial ownership of the shares of Class A Common Stock as of December 31, 2025, based upon 14,947,318 shares of Class A Common Stock outstanding as of December 31, 2025 plus 2,038,003 shares which the Reporting Person had the right to acquire within 60 days of December 31, 2025 . Michael Bruce Rowe, Jr. - 2,038,003 Rowe Family 2024 Irrevocable Trust U/A dated 3/13/24 - 2,038,003 Michael Bruce Rowe, Jr. - 29.0% Rowe Family 2024 Irrevocable Trust U/A dated 3/13/24 - 29.0% Michael Bruce Rowe, Jr. - 1,834,084 Rowe Family 2024 Irrevocable Trust U/A dated 3/13/24 - 203,617 Michael Bruce Rowe, Jr. - 203,617 Rowe Family 2024 Irrevocable Trust U/A dated 3/13/24 - 1,834,084 Michael Bruce Rowe, Jr. - 1,834,084 Rowe Family 2024 Irrevocable Trust U/A dated 3/13/24 - 203,617 Michael Bruce Rowe, Jr. - 203,617 Rowe Family 2024 Irrevocable Trust U/A dated 3/13/24 - 1,834,084 As of December 31 2025, Michael Bruce Rowe, Jr. was the record holder of 1,834,084 shares of Class A Common Stock underlying the LLC Units of Cardinal Holdings and associated shares of Class B Common Stock of the Issuer, which may be redeemed by the Reporting Person at any time at the option of the holder for shares of Class A Common Stock on a one-for-one basis. Mr. Rowe is the spouse of the trustee of the Rowe Family 2024 Irrevocable Trust U/A dated 3/13/24, as amended (the "Rowe Family Trust"), and as a result, may be deemed to share beneficial ownership of the securities held by the Rowe Family Irrevocable Trust. As a result, Mr. Rowe may be deemed to share beneficial ownership of the shares of Class A Common Stock underlying the LLC Units directly held by the Rowe Family Trust. Y Y Y Y Y Y 99 Joint Filing Agreement. Michael Bruce Rowe, Jr. /s/ Mike Rowe 02/17/2026 Rowe Family 2024 Irrevocable Trust U/A dated 3/13/24 /s/ Mike Rowe 02/17/2026