UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

~~WASHINGTON~~Washington, ~~D.C.~~DC ~~20579~~20549

FORM 8-K

CURRENT REPORT

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

~~Date~~THE ofSECURITIES ~~Report:~~EXCHANGE ~~March~~ACT 4,OF ~~2026~~ 1934

Date of report (Date of earliest event reported): March 12, 2026

LITTELFUSE, INC.

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

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

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

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

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

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

☐ Pre-commencement ~~communications~~communication 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

Name of exchange on which registered

Title of each class

Trading Symbol(s)

Name of each 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 51.0201. ~~Departure~~Entry ofinto ~~Directors~~a orMaterial ~~Certain~~Definitive ~~Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers~~Agreement.

On March 412, 2026, ~~the~~Littelfuse, ~~Board~~Inc., ofa ~~Directors~~Delaware corporation (the “~~Board~~Company”) ~~of Littelfuse~~, ~~Inc.~~entered (into the ~~“Corporation”)~~Credit ~~increased~~Agreement ~~the~~as ~~number~~described ofbelow. ~~members~~The ofCredit ~~the~~Agreement provides ~~Board~~for ~~from~~an ~~eight~~$800 tomillion ~~nine~~senior ~~and~~unsecured ~~appointed~~revolving ~~Ms.~~credit ~~Holly~~facility B.and ~~Paeper~~is available to ~~the~~refinance ~~Board~~existing indebtedness and to ~~fill~~finance ~~the~~working ~~resulting~~capital, ~~vacancy~~capital expenditures, ~~effective~~permitted ~~March~~acquisitions 4,and ~~2026~~for other lawful corporate purposes. Capitalized ~~Holly~~terms Bused in this Item 1.01 ~~Paeper~~without ~~was~~definition ~~also~~shall ~~appointed~~have tothe meanings specified in the ~~Technology~~Credit ~~Committee~~Agreement.

~~Ms.~~The ~~Paeper~~Company, ~~will~~certain ~~hold~~subsidiaries ~~office~~of ~~until~~the ~~her~~Company ~~successor~~as isdesignated ~~duly~~borrowers, ~~elected~~ and ~~qualified~~certain orsubsidiaries ~~upon~~of ~~her~~the ~~earlier~~Company ~~death~~as guarantors, ~~resignation~~entered orinto ~~removal.~~an ~~There~~Amended ~~are~~and Restated noCredit ~~arrangements~~Agreement or(the ~~understandings~~“Credit ~~between~~Agreement”) ~~Ms.~~with ~~Paeper~~each ~~and~~of ~~any~~the banks, financial institutions and other ~~person~~institutional ~~pursuant~~lenders tolisted ~~which~~on ~~Ms.~~the ~~Paeper~~respective ~~was~~signature ~~appointed~~pages thereof (the “Lenders”), Bank of America, N.A., as aagent, ~~director~~Citibank, N.A. ~~The~~and JPMorgan ~~Board~~Chase ~~has~~Bank, ~~determined~~N.A., ~~that~~as Msco-syndication agents, BMO Bank, N.A., ~~Paeper~~PNC isBank, anNational ~~independent~~Association, ~~director~~and ~~under~~Wells ~~the~~Fargo ~~listing~~Bank, ~~standards~~National ofAssociation ~~the~~as ~~Nasdaq~~co-documentation ~~Stock~~agents, ~~Market~~BofA Securities, Inc. as sole bookrunner and isjoint ~~independent~~lead ~~for~~arranger, ~~the~~and Citibank, ~~purposes~~N.A. ofand ~~Rule~~JPMorgan ~~10A-3~~Chase ~~under~~Bank, ~~the~~N.A., ~~Securities~~as ~~Exchange~~joint ~~Act~~lead ofarrangers. ~~1934~~The Credit Agreement amends and restates the Credit Agreement, dated as ~~amended~~of June 30, 2022 (the “~~Exchange~~Existing ~~Act~~Credit Agreement”)., ~~Ms.~~as ~~Paeper~~amended, ~~also~~entered isinto ~~not~~by athe ~~party~~Company, tocertain subsidiaries ~~any~~of ~~transactions~~the ~~requiring~~Company, ~~disclosure~~as ~~pursuant~~designated toborrowers, ~~Item~~and ~~404(a)~~certain subsidiaries of ~~Regulation~~the ~~S-K~~Company, ~~under~~as guarantors, with each of the ~~Exchange~~banks, ~~Act~~financial institutions and other institutional lenders listed on the respective signature pages thereof, ~~except~~Bank of America, N.A., as ~~follows:~~agent, ~~Ms.~~JPMorgan ~~Paeper~~Chase ~~serves~~Bank, N.A., as ~~President~~syndication agent, ~~Commercial~~PNC ~~HVAC~~Bank, ~~Business~~National ofAssociation ~~Trane~~and ~~Technologies~~BMO ~~(“Trane”)~~Harris Bank, N. ~~Since~~A., ~~December~~as 29co-senior documentation agents, ~~2024~~Wells Fargo Bank, ~~the~~National ~~Corporation~~Association, ~~sold~~as ~~products~~documentation ~~totalling~~agent, ~~approximately~~BofA ~~$19~~Securities, Inc.0 ~~million~~as tosole ~~Trane~~bookrunner and ~~its~~joint ~~affiliates~~lead arranger, and JPMorgan Chase Bank, N.A., as joint lead arranger.

~~Ms.~~The ~~Paeper~~Credit ~~has~~Agreement ~~served~~effected ascertain ~~President~~changes ofto ~~Commercial~~the ~~HVAC~~Existing ~~Americas~~Credit atAgreement, ~~Trane~~including, ~~Technologies~~among ~~plc~~other ~~(NYSE~~changes: TT(i), apaying ~~global~~off ~~climate innovator that delivers sustainable~~ and ~~efficient~~deleting ~~solutions~~the ~~for~~unsecured term ~~buildings,~~loan ~~homes,~~credit ~~and~~facility; ~~transportation,~~(ii) ~~since~~increasing ~~January~~the ~~2024.~~aggregate Asrevolving ~~President,~~commitment ~~Holly~~amount ~~leads~~from a$700 ~~thermal~~million ~~management,~~to ~~building~~$800 ~~technologies~~million; and ~~energy~~(iii) ~~services~~extending ~~business,~~the ~~delivering~~maturity ~~innovative~~date ~~solutions~~to ~~for~~March ~~commercial~~12, ~~industrial,~~2031 ~~and~~(the ~~data~~“Maturity ~~center customers~~Date”). ~~Since~~ ~~joining~~Pursuant ~~Trane~~to ~~Technologies in 2016, Ms. Paeper has also served as President of~~ the ~~global~~Credit ~~Life Science Solutions business from 2021-2024~~Agreement, ~~and held Vice President and General Manager roles within~~ the ~~Commercial~~Company ~~HVAC business~~ may, from ~~2016~~time to ~~2021. Prior to joining Trane Technologies~~time, ~~Ms.~~increase ~~Paeper~~the ~~held~~size ~~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 ~~board~~revolving ofcredit ~~directors~~facility ator ~~Mitsubishi~~enter ~~Electric~~into ~~Trane~~one USor ~~(METUS)~~more ~~since~~tranches ~~January 2024 and has served as a member~~ of ~~the~~term ~~board~~loans ofin ~~directors~~minimum ofincrements ~~LiquidStack Holding B.V. from 2023 to 2025. Ms. Paeper holds a Bachelor~~ of ~~Science~~$25 inmillion ~~Electrical~~if ~~Engineering from~~there ~~the~~is ~~University~~no ofevent ~~Minnesota – Institute~~ of ~~Technology~~default and ~~a Master of Business Administration from~~ the ~~University~~Company ofis ~~Minnesota~~in –compliance ~~Carlson~~with ~~School~~certain ~~of Management~~financial covenants.

AsLoans under the Credit Agreement bear interest as follows: (i) each loan (other than Swing Line Loans) shall bear interest on the outstanding principal amount thereof for each Interest Period at a ~~non-employee~~rate ~~director,~~per ~~Ms.~~annum ~~Paeper~~equal ~~will~~to ~~receive~~the ~~compensation~~Applicable Rate, as determined in accordance with the ~~Corporation’s~~performance ~~non-employee~~pricing ~~director~~grid ~~compensation~~set ~~practices~~forth in the Credit Agreement, ~~which~~plus ~~are~~one ~~described~~of the following indexes: (a) Term SOFR (in the ~~Corporation’s~~case of ~~definitive~~U.S. ~~proxy~~dollar-denominated ~~statement~~loans), ~~filed~~(b) ~~with~~SONIA ~~the~~plus ~~Securities~~a ~~and~~credit ~~Exchange~~spread ~~Commission~~(in onthe ~~March~~case 14of Pound-denominated loans), ~~2025.~~(c) AsEURIBOR ~~part~~(in the case of ~~such~~Euro-denominated ~~compensation~~loans), ~~Ms.~~(d) ~~Paeper~~SARON ~~will~~plus ~~receive~~a ancredit ~~initial~~spread ~~equity~~(in ~~award~~the ~~consisting~~case of aSwiss ~~pro~~Franc-~~rated~~denominated ~~portion~~loans), (e) TIBOR (in the case of Yen-denominated loans) or (f) the ~~annual~~Base ~~award~~Rate; ofand ~~restricted~~(ii) ~~stock~~each ~~units~~Swingline ~~made~~Loan shall bear interest at a rate per annum equal to ~~independent~~Applicable ~~directors~~Rate plus the Base Rate.

~~Item~~The 7Company shall pay to Bank of America, N.01A., ~~Regulation~~for FDthe ~~Disclosure~~account of the Lenders, a commitment fee equal to the Applicable Rate multiplied by the actual daily amount by which the Aggregate Revolving Commitments exceed the sum of (i) the Outstanding Amount of the Revolving Loans and (ii) the Outstanding Amount of the L/C Obligations. The commitment fee shall be due and payable in arrears on the last Business Day of each March, June, September and December, commencing with the first such date to occur after the Closing Date, and ending on the Maturity Date.

ARevolving ~~copy~~Loans ofmay ~~the~~be ~~press~~borrowed, ~~release~~repaid ~~announcing~~and reborrowed until the ~~appointment~~Maturity ofDate, Msat which time all amounts borrowed must be repaid. Accrued ~~Paeper~~interest on the loans is ~~attached~~payable in arrears on each Interest Payment Date applicable thereto and at such other times as ~~Exhibit~~may 99be specified in the Credit Agreement. Subject to certain conditions, (i) the Company may terminate or reduce the Aggregate Revolving Commitments in whole or in part, and (ii) a Borrower may prepay the Revolving Loans at any time, without premium or penalty. Among other terms and conditions applicable to the Incremental Term Loans (made pursuant to the term loan expansion option summarized above), the Incremental Term Loans (1) shall not mature earlier than the Maturity Date (but may have amortization prior to such date) (except as otherwise provided in the Credit Agreement with respect to customary bridge Indebtedness), (2) the terms and ~~incorporated~~conditions ~~herein~~applicable byto ~~reference~~any tranche of Incremental Term Loans shall otherwise be on terms not materially more onerous, taken as a whole, to the Company than the Revolving Loans and any other Incremental Term Loans, and (3) the Incremental Terms Loans may be priced differently than the Revolving Loans.

The ~~exhibit~~Credit ~~furnished~~Agreement ~~under~~contains ~~Item~~customary 7representations and warranties.01 ofThe ~~this~~Credit ~~Current~~Agreement ~~Report~~also ~~shall~~contains ~~not~~customary beaffirmative ~~deemed~~and ~~“filed”~~negative ~~for~~covenants, including ~~purposes~~covenants ofthat ~~Section~~limit 18or ofrestrict the ~~Securities~~Company’s ~~Exchange~~ability ~~Act~~to, ofamong ~~1934~~other ~~(the~~things, ~~“Exchange~~grant ~~Act”)~~liens, ormake ~~otherwise~~investments, ~~subject~~incur toindebtedness (at the ~~liabilities~~Company ofor ~~that~~subsidiary ~~section~~level), ~~nor~~merge ~~shall~~or itconsolidate beand ~~deemed~~make ~~incorporated~~certain bypayments, ~~reference~~ in ~~any~~each ~~filing~~case bysubject ~~the~~to customary ~~Company~~exceptions ~~under~~for ~~the~~a ~~Securities~~credit ~~Act~~facility of ~~1933~~this orsize ~~the~~and ~~Exchange~~type. ~~Act,~~The ~~except~~Company asis ~~shall~~also berequired ~~expressly~~to ~~set~~maintain ~~forth~~compliance bywith ~~specific~~a ~~reference~~consolidated ininterest ~~such~~coverage ~~filing~~ratio and a consolidated net leverage ratio.

The Credit Agreement includes customary events of default that include, among other things, payment and non-payment defaults, covenant defaults, inaccuracy of representations and warranties, cross-default to material indebtedness, bankruptcy and insolvency defaults, material judgment defaults, ERISA defaults and a change of control default. The occurrence of an event of default could result in the acceleration of the obligations under the Credit Agreement.

In the ordinary course of their respective businesses, certain of the Lenders and the other parties to the Credit Agreement and their respective affiliates are, and may become in the future, customers of the Company and have engaged, or may in the future engage, in commercial banking, investment banking, financial advisory or other services with the Company for which they have in the past and/or may in the future receive customary compensation and expense reimbursement.

The description of the Credit Agreement does not purport to be complete and is qualified in its entirety by reference to the Credit Agreement, which is filed with this Current Report on Form 8-K as Exhibit 10.1.

Item 2.03

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

On March 12, 2026, the Company entered into the Credit Agreement described in Item 1.01 above, which information is incorporated into this Item 2.03 by reference.

Item 9.01

Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.		Description
Exhibit Number	Description
99.1		Press Release, dated March 5, 2026.
10.1	Amended and Restated Credit Agreement, dated as of March 12, 2026, by and among Littelfuse, Inc., certain subsidiaries of the company, as designated borrowers, certain subsidiaries of the company, as guarantors, the lenders party thereto and Bank of America, N.A., as agent, , Citibank, N.A. and JPMorgan Chase Bank, N.A., as co-syndication agents, BMO Bank, N.A., PNC Bank, National Association, and Wells Fargo Bank, National Association as co-documentation agents, BofA Securities, Inc. as sole bookrunner and joint lead arranger, and Citibank, N.A. and JPMorgan Chase Bank, N.A., as joint lead arrangers.
104	Cover Page Interactive Data File - the cover page XBRL tags are 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.

			Littelfuse, Inc.
Date: March 13, 2026		LITTELFUSE, INC.
Date: March 5, 2026			By: /s/ Abhishek Khandelwal
	By:	/s/ Abhishek Khandelwal
			Executive Vice President and Chief Financial Officer
	Name:	Abhishek Khandelwal
	Title:	Executive Vice President and Chief Financial Officer

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