TDG: Leadership change

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On July 22, 2026, the Board of Directors (the “Board”) of TransDigm Group Incorporated (the “Company” or “TransDigm”) appointed Irina Krasik to the Company’s Board of Directors, effective immediately. Ms. Krasik has been with Stellex Capital Management since 2021 and serves as a Managing Director. Prior to joining Stellex Capital Management, she was a Principal at Bregal Investments and previously spent more than eight years at The Wicks Group in various investment roles. Earlier in her career, Ms. Krasik held positions at The Carlyle Group and Merrill Lynch. She currently serves on the boards of directors of several privately held companies and brings to the Board extensive experience in mergers and acquisitions, investing, corporate strategy and governance. Ms. Krasik holds an M.B.A. from Harvard Business School and a B.S. in Finance from Rutgers University. Ms. Krasik has not been appointed to any committees of the Board. There are no arrangements or understandings between Ms. Krasik and any other person pursuant to which she was selected as a director, and there are no related person transactions between Ms. Krasik and the Company that would be reportable under Item 404(a) of Regulation S-K. Ms. Krasik will receive compensation for her services on the Company’s Board of Directors in accordance with the Company’s standard compensation arrangements for non-employee directors as set forth in the Company’s proxy statement for its 2026 annual meeting. SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned