0001861795 2026-06-18 2026-06-18 false 0001861795 8-K 2026-06-18 Definitive Healthcare Corp. 001-40815 DE 86-3988281 492 Old Connecticut Path, Suite 401 Framingham MA 01701 508 720-4224 false false false false Class A Common Stock, $0.001 par value DH NASDAQ false