On January 7, 2026, Littelfuse, Inc. (the "Company") and Ryan K. Stafford, Executive Vice President, Mergers & Acquisitions, Chief Legal Officer and Corporate Secretary of the Company, agreed to Mr. Stafford's separation from employment with the Company, effective April 30, 2026 (the "Separation Date").

The terms of Mr. Stafford's separation from the Company have been memorialized in aLetter Agreement, dated January 7, 2026 (the "Letter Agreement"). Pursuant to the Letter Agreement, the Company has agreed, subject to Mr. Stafford's execution and non-revocation of a Separation and Release Agreement (as described below), to provide Mr. Stafford with certain severance benefits including: (1) a lump sum cash payment pursuant to the Company's Executive Severance Policy payable on or before the 60^th day following the Separation Date; (2) accelerated vesting of 50% of the restricted stock units granted to Mr. Stafford on January 23, 2025; (3) a prorated cash bonus under the Company's Annual Incentive Plan for 2026 to be determined in accordance with the Letter Agreement and the Company's Executive Severance Policy; and (4) continuation or reimbursement of certain welfare benefits and fringe benefits for limited transitional periods following termination.

The foregoing is only a summary of the Letter Agreement and is qualified in its entirety by the full text of the Letter Agreement attached hereto as Exhibit 10.1 and incorporated herein by reference.

In connection with the Letter Agreement, the Company and Mr. Stafford will enter into a Separation and Release Agreement at the time of his termination of employment, containing customary terms including confidentiality, release of claims, and non-disparagement provisions.