On June 8, 2023, Joseph Mirisola notified the Board of Directors of Definitive Healthcare Corp. of his intent to resign as its Chief Revenue Officer. While the effective date of Mr. Mirisola's resignation has not been officially determined, it is expected to occur on or around December 31, 2023, following the identification of his successor and an appropriate transition period.

Mr. Mirisola is expected to remain in his current role until such time and noted his dedication to the Company, his desire for the Company to succeed, and his intention to assist in leading the transition process.