PROTECT CONTROL SENSE Investor Presentation February 2021 Littelfuse® Expertise Applied | Answers Delivered DISCLAIMERS Important Information About Littelfuse, Inc. This presentation does not constitute or form part of, and should not be construed as, an offer or solicitation to purchase or sell securities of Littelfuse, Inc. and no investment decision should be made based upon the information provided herein. Littelfuse strongly urges you to review its filings w ith the Securities and Exchange Commission, ...

Or Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the transition period from to Commission file number 0-20388 LITTELFUSE, INC. (Exact name of registrant as specified in its charter) incorporation or organization) Table of Contents United States Securities and Exchange Commission Washington, D.C. 20549 FORM 10-K ☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 (Mark one) for the fiscal year ended December 28, 2019 (State or ...

Delaware 36-3795742 Table of Contents United States Securities and Exchange Commission Washington, D.C. 20549 FORM 10-K [X] Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 (Mark one) for the fiscal year ended December 29, 2018 Or [ ] Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the transition period from to Commission file number 0-20388 LITTELFUSE, INC. (Exact name of registrant as specified in its charter) (State or other ...