X0609 4 2026-04-22 0 0000889331 LITTELFUSE INC /DE LFUS 0001201094 NOGLOWS WILLIAM P false 6133 NORTH RIVER ROAD, SUITE 500 ROSEMONT IL 60018 1 0 0 0 0 Common Stock 2026-04-22 4 A 0 482 0 A 22176 D Common Stock 2500 I By Trust Common Stock 2500 I By Trust Represents the grant of restricted stock units to the reporting person pursuant to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan, as amended. The grant vests in full on the earlier of (1) the first anniversary of the date of grant or (2) the date of the Company's 2027 Annual Meeting of Stockholders. Shares held in trust for the benefit of the reporting person's son. Shares held in trust for the benefit of the reporting person's daughter. /s/Ryan K. Stafford, Power of Attorney 2026-04-24