Definitive Healthcare Corp. COO's Stock Transaction

On August 1, 2025, Kate Marie Shamsuddin, the Chief Operating Officer of Definitive Healthcare Corp., disposed of 4,741 shares of Class A Common Stock at a price of $3.74 per share. This transaction was related to the vesting and settlement of previously reported restricted stock units, with shares withheld by the Issuer to satisfy tax withholding obligations. Following this transaction, Shamsuddin owns 694,149 shares of the company's Class A Common Stock. The filing, submitted on August 5, 2025, indicates that the transaction is not subject to Section 16 of the Securities Exchange Act of 1934.