EX-10.1
Amentum Holdings, Inc.
Exhibit 10.1 AMENDED AND RESTATED EMPLOYMENT AGREEMENT (this “Agreement”), dated as of September 28, 2026 (the “Effective Date”), by and between Steven Demetriou (“Executive”) and Amentum Holdings, Inc., a Delaware corporation (the “Company”). WHEREAS, Executive currently serves as Executive Chair of the Company pursuant to the terms of an Employment Agreement between Executive and the Company dated as of November 6, 2024 (the “Prior Agreement”); and WHEREAS, the Company and Executive desire to enter into this Agreement to amend and restate the terms and conditions under which Executive will serve as Executive Chair of the Company, and this Agreement shall amend and supersede the terms of the Prior Agreement effective upon the Effective Date. NOW, THEREFORE, in consideration of the promises and mutual agreements herein contained, the parties hereto do hereby agree as follows: ARTICLE I Employment SECTION 1.01. Term. Executive’s employment shall continue indefinitely, subject to termination pursuant to the provisions of this Agreement (such period of employment, the “Term”). For the a
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