SCHEDULE 13G 0002099974 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) Erik Daniel West X1 5095925.00 1018084.00 5095925.00 1018084.00 6114009.00 N 29.0 IN West Family 2024 Irrevocable Trust U/A dated 3/20/24 NC 1018084.00 0.00 1018084.00 0.00 6114009.00 N 29.0 OO CARDINAL INFRASTRUCTURE GROUP INC. 100 E. SIX FORKS RD., SUITE 300, RALEIGH, NC. 27609 Erik Daniel West 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 6,114,009 shares which the Reporting Person had the right to acquire within 60 days of December 31, 2025 . Erik Daniel West - 6,114,009 West Family 2024 Irrevocable Trust U/A dated 3/20/24 - 6,114,009 Erik Daniel West - 29.0% West Family 2024 Irrevocable Trust U/A dated 3/20/24 - 29.0% Erik Daniel West - 5,095,925 West Family 2024 Irrevocable Trust U/A dated 3/20/24 - 1,018,084 Erik Daniel West - 1,018,084 West Family 2024 Irrevocable Trust U/A dated 3/20/24 - 5,095,925 Erik Daniel West - 5,095,925 West Family 2024 Irrevocable Trust U/A dated 3/20/24 - 1,018,084 Erik Daniel West - 1,018,084 West Family 2024 Irrevocable Trust U/A dated 3/20/24 - 5,095,925 As of December 31 2025, Erik Daniel West was the record holder of 5,095,925 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. West is the spouse of the trustee of the West Family 2024 Irrevocable Trust U/A dated 3/20/24, as amended (the "West Family Trust"), and as a result, may be deemed to share beneficial ownership of the securities held by the West Family Irrevocable Trust. As a result, Mr. West may be deemed to share beneficial ownership of the shares of Class A Common Stock underlying the LLC Units directly held by the West Family Trust. Y Y Y Y Y Y 99 Joint Filing Agreement. Erik Daniel West /s/ Erik West 02/17/2026 West Family 2024 Irrevocable Trust U/A dated 3/20/24 /s/ Erik West 02/17/2026