SCHEDULE 13G/A 0001493152-24-039445 0001929389 XXXXXXXX LIVE 1 Class A Common Stock, $0.001 par value 03/31/2025 0001861795 Definitive Healthcare Corp. 24477E103 492 Old Connecticut Path, Suite 401 Framingham MA 01701 Rule 13d-1(b) Irenic Capital Management LP DE 0.00 0.00 0.00 0.00 0.00 N 0 IA See item 2 for additional information. Irenic Capital Evergreen Master Fund LP E9 0.00 0.00 0.00 0.00 0.00 N 0 PN See item 2 for additional information. Adam Katz X1 0.00 0.00 0.00 0.00 0.00 N 0 IN See item 2 for additional information. Andrew Dodge X1 0.00 0.00 0.00 0.00 0.00 N 0 IN See item 2 for additional information. Definitive Healthcare Corp. 492 Old Connecticut Path, Suite 401, Framingham, MA, 01701 This report on Schedule 13G is being jointly filed by (i) Irenic Capital Management LP, a Delaware limited partnership ("Irenic Capital"), (ii) Irenic Capital Evergreen Master Fund LP, a Cayman Islands limited partnership ("Irenic Evergreen Master Fund"), (iii) Adam Katz and (iv) Andrew Dodge, with respect to the shares of Class A Common Stock, $0.001 par value (the "Class A Common Stock"), of the Company held by Irenic Evergreen Master Fund. Irenic Capital is the investment manager of Irenic Evergreen Master Fund. Irenic Capital Management GP LLC ("Irenic Capital GP"), a Delaware limited liability company, is the general partner of Irenic Capital. Irenic Capital Evergreen Fund GP LLC ("Irenic Evergreen GP"), a Delaware limited liability company, is the general partner of Irenic Evergreen Master Fund. Adam Katz is the Chief Investment Officer of Irenic Capital and a managing member of each of Irenic Capital GP and Irenic Evergreen GP. Andrew Dodge is the Director of Research of Irenic Capital and a managing member of each of Irenic Capital GP and Irenic Evergreen GP. The business address of each of Irenic Capital, Irenic Evergreen Master Fund, Irenic Capital GP, Irenic Evergreen GP and Messrs. Katz and Dodge is 767 Fifth Avenue, 15th Floor, New York, NY 10153. Irenic Capital is a Delaware limited partnership. Irenic Evergreen Master Fund is a Cayman Islands limited partnership. Irenic Capital GP and Irenic Evergreen GP are Delaware limited liability companies. Messrs. Katz and Dodge are citizens of the United States of America. Y 0 0 0 0 0 0 N Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. 1. Joint Filing Agreement, dated as of October 3, 2024, by and between Irenic Capital Management LP, Irenic Capital Evergreen Master Fund LP, Adam Katz and Andrew Dodge (incorporated by reference to Exhibit 1 to the Schedule 13G filed with the Securities and Exchange Commission on October 3, 2024). Irenic Capital Management LP /s/ Joshua Brodman 05/15/2025 Irenic Capital Evergreen Master Fund LP /s/ Joshua Brodman 05/15/2025 Adam Katz /s/ Adam Katz 05/15/2025 Andrew Dodge /s/ Andrew Dodge 05/15/2025