On June 12, 2024, Mark Mouritsen, Senior Vice President, Chief Legal Officer of Aspen Technology, Inc. (the ?Company?) submitted his resignation, effective July 26, 2024 (the ?Effective Date?). Mr. Mouritsen?s resignation was a personal decision to pursue another opportunity and was not the result of any disagreement with the Company on any matter relating to the Company?s operations, policies or practices. Mr. Mouritsen will remain Senior Vice President, Chief Legal Officer of the Company until the Effective Date.

Christopher Cooper, who currently serves as Vice President, Associate General Counsel, will assume the role of Interim Chief Legal Officer, effective July 26, 2024.