A starting salary of $900,000 per annum, increasing to $1,000,000 per annum with effect from January 1, 2027. Commencing on January 1, 2028, your salary will be reviewed annually by the Board.

Sign-on equity incentive grants equating to $1,000,000 to compensate you for equity granted to you by your former employer that you will forfeit upon your acceptance of this offer letter, consisting of the following components:

You will be eligible to participate in the 2026 KBR Senior Executive Performance Pay Plan (the “STI Plan”).  The target payout will be 120% of salary, prorated for the number of full months worked during 2026 (“Target Bonus”). Terms, conditions, and participation eligibility of the STI Plan are reviewed annually by the Compensation Committee of the Company. Your performance goals for 2026 will be agreed with me and for future years will be mutually determined by you and the Board.

You will be eligible to participate in the 2026 Long-Term Incentive Plan (the “LTI Plan”).  The estimated fair market value of your award will be prorated according to the number of full months to be worked during 2026, based on a full year award value of $5,000,000.  Terms, conditions, and participation eligibility of the LTI Plan are reviewed annually by the Compensation Committee of the Company.

You will be eligible to receive certain (i) severance pay and benefits, and (ii) change in control severance pay and benefits pursuant to the terms and conditions of the Severance and Change in Control Agreement, a copy of which will be executed by you and the Company before your first day of employment.

You will be required to comply with the Company’s minimum stock ownership requirements, which require that you achieve equity ownership in the Company equal to at least five times your base salary within five years of your first day of employment. All beneficially owned shares of Common Stock (including shares in any of the Company’s benefit programs), vested and unvested restricted stock and restricted stock units and stock payments under Performance Award Unit grants shall be credited towards achievement of the requirement.

Eligibility for the standard and executive employee benefits offered by the Company for corporate employees located in the U.S. according to the terms of such programs as updated from time to time. As an Executive Leadership Team member, these benefits currently include business class travel, financial planning assistance of $15,000 per annum, and an annual executive physical.

Each of you and the Company represents and warrants that neither construes the post-employment non-competition provision in your Serco Inc. Employment Agreement (the “Serco Non-Compete”) as conflicting with or constraining your ability to become employed by or provide services to the Company. Nevertheless, out of an abundance of caution, the Company shall indemnify, defend, and hold you harmless from and against any and all expenses (including advancement and payment of attorneys’ fees, costs, and expenses) and any damages, judgments, or amounts paid in settlement  if you are made a party to or you become a participant in any actual, threatened, pending or completed action, claim, or proceeding by Serco Inc., Serco Group Plc, or any Serco affiliate alleging that your employment with the Company violates the Serco Non-Compete (the “Indemnification Obligation”). The Company shall be entitled to assume and control the defense of any such action, claim, or proceeding; provided, however, that you shall retain the right to participate in the defense with individual counsel, with reasonable fees borne by the Company. The Company shall have no Indemnification Obligation if you misappropriate any confidential information of Serco or any Serco affiliate.

The Company shall provide you with indemnification and directors’ and officer’s liability insurance coverage on terms no less favorable than provided to any other executive officer or director of the Company. The provisions of this paragraph shall survive the termination of this offer letter and your employment with the Company.

Clearing the relevant background checks in accordance with relevant regulation and policies.

Successfully completing a pre-employment physical.

Verifying your identity and eligibility to work in the U.S.

Verifying your eligibility to be a Section 16 Officer under U.S. Securities & Exchange Commission regulations.

Signing our Standard Patent Agreement and Alcohol and Controlled Substances Policy.

Not appearing as a prohibited party on any government lists of persons that the Company may not hire for export control or sanctions reasons.