Letter Agreement with Terms and Conditions of Employment with Phillip Theodore dated December 5, 2023

Phillip Theodore

Phillip.Theodore@resideo.com

 As a condition of the additional severance benefits described below, you are required to execute, in the forms attached hereto, the Resideo’s Employee Agreement Relating to Trade Secrets, Proprietary and Confidential Information ("IP Agreement") and the “Resideo Technologies, Inc. Noncompete Agreement for Senior Executives (“Noncompete Agreement”).

 Executive Severance: You will be eligible for severance under the Executive Severance Pay Plan (“Executive Severance Plan”).  In the event you are involuntarily terminated other than for “cause” (as that term is defined in the Severance Plan) within 12 months of the date of this letter, and so long as you remain in compliance with the terms of the IP Agreement and the Noncompete Agreement, you shall be eligible for the following additional severance benefits:

a.Eighteen (18) months of salary continuation (instead of, and not in addition to, the 9 months of salary continuation provided for in the Executive Severance Plan);

b.Continued vesting on the original vesting date of any unvested options from your September 28, 2021, stock option grant; and

c.Extension until September 27, 2028, of the expiration date for all stock options granted on September 28, 2021.

For the avoidance of doubt, equity grants previously issued to you are subject to pro-rated accelerated vesting upon termination as outlined in the applicable stock incentive plan and award agreements.

PHILLIP THEODORE                            Date