UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

~~Washington~~WASHINGTON, DCD.C. ~~20549~~20579

FORM 8-K


CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(Dd) OF THE SECURITIES EXCHANGE ACT OF 1934

~~THE~~Date ~~SECURITIES~~of ~~EXCHANGE~~Report: ~~ACT~~March OF4, ~~1934~~2026

~~Date of report~~ (Date of earliest event reported)~~: January 7, 2026~~

LITTELFUSE, INC.

(Exact ~~Name~~name of ~~Registrant~~registrant as ~~Specified~~specified in ~~Charter~~its charter)

Delaware	~~0-20388~~	~~36-3795742~~	0-20388	36-3795742
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)
(State of other jurisdiction of incorporation)			(Commission File Number)	(IRS Employer Identification No.)

6133 N. River ~~Rd.~~ Road, Suite 500, Rosemont, IL 60018

~~Suite~~(Address ~~500~~ of principal executive offices) (Zip Code)

~~Rosemont~~Registrant’s telephone number, ILincluding ~~60018~~area code: (773) 628-1000

(Address of Principal Executive Offices, and Zip Code)

(773) 628-1000

Registrant’s Telephone Number, Including Area Code

N/A

(Former name, former address and former fiscal year, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


☐			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)


☐			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement ~~communication~~communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement ~~communication~~communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Title of Each Class

Trading Symbol

Name of exchange on which registered

Common Stock, par value $0.01 per share

~~LFUS~~

~~NASDAQ Global Select Market~~

LFUS

NASDAQ Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405 ~~of this chapter~~) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2 ~~of this chapter~~).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On ~~January~~March 74, 2026, the Board of Directors (the “Board”) of Littelfuse, Inc. (the “~~Company~~Corporation”) ~~and~~increased ~~Ryan~~the K.number ~~Stafford,~~of ~~Executive~~members ~~Vice~~of ~~President,~~the ~~Mergers~~Board &from ~~Acquisitions,~~eight ~~Chief~~to ~~Legal~~nine ~~Officer~~ and ~~Corporate~~ ~~Secretary~~appointed ofMs. ~~the~~Holly ~~Company,~~B. ~~agreed~~Paeper to ~~Mr.~~the ~~Stafford’s~~Board ~~separation~~to ~~from~~fill ~~employment with~~ the ~~Company~~resulting vacancy, effective ~~April~~March 304, 2026. (Holly B. Paeper was also appointed to the ~~“Separation~~Technology ~~Date”)~~Committee.

~~The~~Ms. ~~terms~~Paeper ofwill ~~Mr.~~hold ~~Stafford’s~~office ~~separation~~until ~~from~~her ~~the~~successor ~~Company~~is ~~have~~duly ~~been~~elected ~~memorialized~~and inqualified aor ~~Letter~~upon ~~Agreement, dated~~her ~~January~~earlier 7death, ~~2026~~resignation ~~(the~~or ~~“Letter Agreement”)~~removal. ~~Pursuant~~There toare ~~the~~no ~~Letter~~arrangements ~~Agreement,~~or ~~the~~understandings ~~Company~~between ~~has~~Ms. ~~agreed,~~Paeper ~~subject~~and toany ~~Mr.~~other ~~Stafford’s~~person ~~execution~~pursuant ~~and~~to ~~non-revocation~~which ofMs. aPaeper ~~Separation~~was ~~and~~appointed ~~Release Agreement (~~as ~~described~~a ~~below),~~director. toThe ~~provide~~Board ~~Mr.~~has ~~Stafford~~determined ~~with certain~~that ~~severance~~Ms. ~~benefits~~Paeper ~~including:~~is ~~(1)~~an aindependent ~~lump~~director ~~sum~~under ~~cash~~the ~~payment~~listing ~~pursuant~~standards toof the ~~Company’s~~Nasdaq ~~Executive~~Stock ~~Severance~~Market ~~Policy~~and ~~payable~~is onindependent orfor ~~before~~ the ~~60th~~purposes ~~day~~of ~~following~~Rule ~~the~~10A-3 ~~Separation~~under ~~Date;~~the ~~(2)~~Securities ~~accelerated~~Exchange ~~vesting~~Act of ~~50%~~1934, ofas amended (the ~~restricted~~“Exchange ~~stock units~~Act”). ~~granted~~Ms. toPaeper ~~Mr.~~also ~~Stafford~~is onnot ~~January~~a ~~23,~~party ~~2025;~~to ~~(3)~~any atransactions ~~prorated~~requiring ~~cash~~disclosure ~~bonus~~pursuant ~~under~~to ~~the~~Item ~~Company’s~~404(a) ~~Annual~~of ~~Incentive~~Regulation ~~Plan~~S-K ~~for~~under ~~2026~~the toExchange beAct, ~~determined~~except inas ~~accordance~~follows: ~~with~~Ms. ~~the~~Paeper ~~Letter~~serves ~~Agreement~~as ~~and~~President, ~~the~~Commercial ~~Company’s~~HVAC ~~Executive~~Business ~~Severance~~of ~~Policy;~~Trane ~~and~~Technologies (4“Trane”) ~~continuation~~. Since orDecember ~~reimbursement~~29, of2024, ~~certain~~the ~~welfare~~Corporation ~~benefits~~sold ~~and~~products ~~fringe~~totalling ~~benefits~~approximately ~~for~~$19.0 ~~limited~~million ~~transitional~~to ~~periods~~Trane ~~following~~and ~~termination~~its affiliates.

~~The~~Ms. ~~foregoing~~Paeper ishas ~~only~~served as President of Commercial HVAC Americas at Trane Technologies plc (NYSE: TT), a ~~summary~~global climate innovator that delivers sustainable and efficient solutions for buildings, homes, and transportation, since January 2024. As President, Holly leads a thermal management, building technologies and energy services business, delivering innovative solutions for commercial, industrial, and data center customers. Since joining Trane Technologies in 2016, Ms. Paeper has also served as President of the ~~Letter~~global ~~Agreement~~Life Science Solutions business from 2021-2024, and isheld ~~qualified~~Vice inPresident ~~its~~and ~~entirety~~General byManager roles within the ~~full~~Commercial ~~text~~HVAC business from 2016 to 2021. Prior to joining Trane Technologies, Ms. Paeper held executive leadership roles in general management, M&A, strategy, product management, and marketing at Corning Incorporated, Eaton Corporation, and Intel Corp. She currently serves as a member of the ~~Letter~~board ~~Agreement~~of ~~attached~~directors ~~hereto~~at Mitsubishi Electric Trane US (METUS) since January 2024 and has served as ~~Exhibit 10~~a member of the board of directors of LiquidStack Holding B.1V. from 2023 to 2025. Ms. Paeper holds a Bachelor of Science in Electrical Engineering from the University of Minnesota – Institute of Technology and ~~incorporated~~a ~~herein~~Master byof ~~reference~~Business Administration from the University of Minnesota – Carlson School of Management.

InAs ~~connection~~a non-employee director, Ms. Paeper will receive compensation in accordance with the ~~Letter~~Corporation’s ~~Agreement~~non-employee director compensation practices, which are described in the ~~Company~~Corporation’s definitive proxy statement filed with the Securities and MrExchange Commission on March 14, 2025. ~~Stafford~~As ~~will~~part ~~enter~~of ~~into~~such acompensation, ~~Separation~~Ms. ~~and~~Paeper ~~Release~~will ~~Agreement~~receive atan ~~the~~initial ~~time~~equity award consisting of ~~his~~a ~~termination~~pro-rated portion of ~~employment,~~ ~~containing~~the ~~customary~~annual ~~terms~~award ~~including~~of ~~confidentiality,~~restricted ~~release~~stock ofunits ~~claims,~~made ~~and~~to ~~non-disparagement~~independent ~~provisions~~directors.


Item 7.01			Regulation FD Disclosure.

A copy of the press release announcing the appointment of Ms. Paeper is attached as Exhibit 99.1 and incorporated herein by reference.

The exhibit furnished under Item 7.01 of this Current Report shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing by the Company under the Securities Act of 1933 or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.


Item 9.01			Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number	Description
Exhibit No.		Description
10.1	Letter Agreement between Littelfuse, Inc. and Ryan K. Stafford, dated January 7, 2026.
99.1		Press Release, dated March 5, 2026.
104	~~Cover Page Interactive Data File (embedded within the Inline XBRL document)~~	Cover Page Interactive Data File (embedded within the Inline XBRL document)

~~SIGNATURE~~Signature

Pursuant to the requirements of the Securities Exchange Act of 1934, the ~~registrant~~Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date: January 8, 2026	LITTELFUSE, INC.
			Littelfuse, Inc.
	By:	/s/ Abhishek Khandelwal
Date: March 5, 2026			By: /s/ Abhishek Khandelwal
	Name:	Abhishek Khandelwal
			Executive Vice President and Chief Financial Officer
	Title:	Executive Vice President, Chief Financial Officer

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