0002079999 2026-09-10 2026-09-10 false 0002079999 8-K 2026-09-10 Cardinal Infrastructure Group Inc. DE 001-43004 39-3180206 100 E. Six Forks Road, #300 Raleigh NC 27609 919 324-1964 false false false false Class A Common Stock, $0.0001 Par Value CDNL NASDAQ true true