On May 26, 2023, the board of directors of TransDigm Group Incorporated appointed Michael J. Lisman, the company's current executive vice president and chief financial officer, and Joel Reiss, an Executive Vice President of the Company, as Co-Chief Operating Officers of the Company, effective immediately. Messrs. Lisman and Reiss will serve as Co-Chief Operating Officers of the Company with Jorge L. Valladares III, the Company's current Chief Operating Officer, who will retire from the Company effective September 30, 2023.

Mr. Lisman, 40, was appointed Chief Financial Officer in July 2018 and Executive Vice President in January 2022. Prior to that, Mr. Lisman served as Vice President – Mergers and Acquisitions from January 2018 to June 2018, Business Unit Manager for the Air & Fuel Valves business unit at Aero Fluid Products, a wholly-owned subsidiary of TransDigm Inc., from January 2017 to January 2018 and Director of Mergers and Acquisitions of TransDigm from November 2015 to January 2017. Prior to that, Mr. Lisman worked for Warburg Pincus.

Mr. Reiss, 53, has served as Executive Vice President of the Company since October 2015. Prior to that, Mr. Reiss served as President of Hartwell Corporation, a wholly-owned subsidiary of TransDigm Inc., from July 2012 to October 2015, and President of Skurka Aerospace Inc., also a wholly-owned subsidiary of TransDigm Inc., from July 2010 to July 2012. Also on May 26, 2023, the Board, upon the recommendation of the Nominating and Corporate Governance Committee (the Committee) of the Board, increased the number of Board members from eleven directors to twelve directors and appointed Mr. Valladares to the Board, effective immediately.

Mr. Valladares will hold office until the annual meeting of the stockholders in 2024 and until his successor has been elected or until his earlier resignation or removal. Mr. Valladares, 49, was appointed Chief Operating Officer in April 2019. Prior to that, Mr. Valladares served as Chief Operating Officer — Power & Control from June 2018 to March 2019, Executive Vice President from October 2013 to May 2018, as President of AvtechTyee Inc. (formerly Avtech Corporation), a wholly-owned subsidiary of TransDigm Inc., from 2009 to 2013, and as President of AdelWiggins Group, a division of TransDigm Inc., from 2008 to 2009.