0001590599-26-000004.txt : 20260424 0001590599-26-000004.hdr.sgml : 20260424 20260424162210 ACCESSION NUMBER: 0001590599-26-000004 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260422 FILED AS OF DATE: 20260424 DATE AS OF CHANGE: 20260424 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Henderson Gregory N. CENTRAL INDEX KEY: 0001590599 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-20388 FILM NUMBER: 26894426 MAIL ADDRESS: STREET 1: C/O HITTITE MICROWAVE CORPORATION STREET 2: 2 ELIZABETH DRIVE CITY: CHELMSFORD STATE: MA ZIP: 01824 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: LITTELFUSE INC /DE CENTRAL INDEX KEY: 0000889331 STANDARD INDUSTRIAL CLASSIFICATION: SWITCHGEAR & SWITCHBOARD APPARATUS [3613] ORGANIZATION NAME: 04 Manufacturing EIN: 363795742 STATE OF INCORPORATION: DE FISCAL YEAR END: 1226 BUSINESS ADDRESS: STREET 1: 6133 NORTH RIVER ROAD STREET 2: SUITE 500 CITY: ROSEMONT STATE: IL ZIP: 60018 BUSINESS PHONE: 773-628-1000 MAIL ADDRESS: STREET 1: 6133 NORTH RIVER ROAD STREET 2: SUITE 500 CITY: ROSEMONT STATE: IL ZIP: 60018 4 1 wk-form4_1777062128.xml FORM 4 X0609 4 2026-04-22 0 0000889331 LITTELFUSE INC /DE LFUS 0001590599 Henderson Gregory N. false 6133 NORTH RIVER ROAD, SUITE 500 ROSEMONT IL 60018 1 1 0 0 President & CEO 0 Common Stock 2026-04-22 4 A 0 6843 0 A 20824 D Represents the grant of restricted stock units to the reporting person pursuant to the Littelfuse/IXYS Corporation Long-Term Incentive Plan. The grant vests in increments of one-third annually beginning on the first anniversary of the date of grant. /s/Ryan K. Stafford, Power of Attorney 2026-04-24