lfus-20250429

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION


WASHINGTON, D.C. 20579

FORM 8-K


CURRENT REPORT

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

Date of Report: April 29, 2025

(Date of earliest event reported)

LITTELFUSE, INC.

(Exact name of registrant as specified in its charter)


Delaware	0-20388	36-3795742
(State of other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

6133 North River Road, Suite 500, Rosemont, IL 60018

(Address of principal executive offices) (Zip Code)

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

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


☐			Pre-commencement 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

Name of exchange on which registered

Common Stock, par value $0.01 per share

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) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

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 2.02			Results of Operations and Financial Condition

The information contained within Item 2.02 of this Form 8-K and the Exhibits attached hereto shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and shall not be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.

On April 29, 2025, Littelfuse, Inc. (the “Company”) issued a press release announcing the results of its operations for the quarter ended March 29, 2025. A copy of the press release is attached as Exhibit 99.1 to this Form 8-K and incorporated by reference to this Item 2.02 as if fully set forth herein. A copy of the press release will also be available on the Company’s website.


Item 7.01			Regulation FD Disclosure

To supplement the information in the attached press release, the Company has also prepared a presentation, which will be available on the Company’s website at https://investor.littelfuse.com/events-and-presentations and is attached hereto as Exhibit 99.2 to this Current Report on Form 8-K.

The information contained in the press release and investor presentation attached to this Form 8-K includes forward-looking statements that are intended to be covered by the safe-harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements include but are not limited to comments with respect to the objectives and strategies, financial condition, results of operations and business of the Company. These forward-looking statements involve numerous assumptions, inherent risks and uncertainties, both general and specific, and the risk that predictions and other forward-looking statements will not be achieved. The Company cautions you not to place undue reliance on these forward-looking statements as a number of important factors could cause actual future results to differ materially from the plans, objectives, expectations, estimates and intentions expressed in such forward-looking statements.

A copy of the press release is also posted on the Company's website.


Item 9.01			Financial Statements and Exhibits.


(d)			Exhibits
			The following exhibit is furnished with this Form 8-K:
			99.1 Press Release, dated April 29, 202 5
			99.2 Littelfuse Presentation dated April 29, 202 5
			104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

Signature

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


			Littelfuse, Inc.


Date: April 29, 2025			By: /s/ Meenal A. Sethna
			Meenal A. Sethna Executive Vice President and Chief Financial Officer

Exhibit 99.1



			FOR IMMEDIATE RELEASE David Kelley 224-727-2535 [email protected]

LITTELFUSE REPORTS FIRST QUARTER RESULTS FOR 2025

First Quarter 2025 Highlights:

(Year-over-year comparisons unless otherwise noted)

•Net sales of $554 million, +3.5%; organic growth contributed +2.9%

•GAAP diluted earnings per share of $1.75

•Adjusted diluted EPS of $2.19, +24%

•Free cash flow of $43 million, +3%; Cash conversion of 98%

•Returned $45m to shareholders via dividend and share repurchases

CHICAGO, April 29, 2025 - Littelfuse, Inc. (NASDAQ: LFUS), a diversified, industrial technology manufacturing company empowering a sustainable, connected, and safer world, today reported financial results for the first quarter ended March 29, 2025:

“In the first quarter, we delivered results that exceeded our expectations, driven by solid Electronics Segment demand recovery and robust growth in our Industrial Segment,” said Greg Henderson, Littelfuse President and Chief Executive Officer. “Across our businesses, we drove improved bookings in the first quarter while our teams delivered strong operational performance, reflected in our expanded operating margin. Into the second quarter, we are prepared to navigate an uncertain environment, supported by our flexible operating model, strong balance sheet, diversified end market and customer exposures, and seasoned global teams.”

“While we are focused on executing through the current uncertain trade and economic landscape, we are not losing sight of our meaningful long-term opportunities. We have a history of strong and resilient profitability and cash flow that provide a solid foundation for future success. We are a leader in developing solutions that enable safe and efficient electrical energy transfer for our customers while our diverse end market exposures are aligned with secular growth trends. I am confident we are well positioned to deliver compelling long-term returns for our shareholders.”

-more-

Page 2

Second Quarter of 2025*

Based on current market conditions, for the second quarter the company expects,

•Net sales in the range of $565 - $595 million, adjusted diluted EPS in the range of $2.10 – $2.40 and an adjusted effective tax rate of 23% - 25%

*Littelfuse provides guidance on a non-GAAP (adjusted) basis. GAAP items excluded from guidance may include the after-tax impact of items including acquisition and integration costs, restructuring, impairment and other charges, certain purchase accounting adjustments, non-operating foreign exchange adjustments and significant and unusual items. These items are uncertain, depend on various factors, and could be material to results computed in accordance with GAAP. Littelfuse is not able to forecast the excluded items in order to provide the most directly comparable GAAP financial measure without unreasonable efforts.

Dividend

•The company will pay a cash dividend on its common stock of $0.70 per share on June 5, 2025, to shareholders of record as of May 22, 2025

Conference Call and Webcast Information

Littelfuse will host a conference call on Wednesday, April 30, 2025, at 9:00 a.m. Central Time to discuss the results. The call will be broadcast and available for replay at Littelfuse.com. A slide presentation is available in the Investor Relations section of the company’s website at Littelfuse.com.

About Littelfuse

Littelfuse, Inc. (NASDAQ: LFUS) is a diversified, industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 20 countries, and with approximately 16,000 global associates, we partner with customers to design and deliver innovative, reliable solutions. Serving over 100,000 end customers, our products are found in a variety of industrial, transportation and electronics end markets – everywhere, every day. Learn more at Littelfuse.com.

-more

Page 3

“Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995

The statements in this press release that are not historical facts are intended to constitute "forward-looking statements" entitled to the safe-harbor provisions of the Private Securities Litigation Reform Act. Such statements are based on Littelfuse, Inc.’s (“Littelfuse” or the “Company”) current expectations and are subject to a number of factors and uncertainties, which could cause actual results to differ materially from those described in the forward-looking statements. These risks, uncertainties and other factors include, but are not limited to, risks and uncertainties relating to general economic conditions; product demand and market acceptance; economic conditions; the impact of competitive products and pricing; product quality problems or product recalls; capacity and supply difficulties or constraints; coal mining exposures reserves; cybersecurity matters; failure of an indemnification for environmental liability; exchange rate fluctuations; commodity price fluctuations; the effect of the Company's accounting policies; labor disputes and shortages; restructuring costs in excess of expectations; pension plan asset returns less than assumed; uncertainties related to political or regulatory changes; integration of acquisitions may not be achieved in a timely manner, or at all; limited realization of the expected benefits from investment and strategic plans; and other risks which may be detailed in the company's Securities and Exchange Commission filings. Should one or more of these risks or uncertainties materialize or should the underlying assumptions prove incorrect, actual results and outcomes may differ materially from those indicated or implied in the forward-looking statements. This release should be read in conjunction with information provided in the financial statements appearing in the company's Annual Report on Form 10-K for the year ended December 28, 2024.

Further discussion of the risk factors of the company can be found under the caption "Risk Factors" in the company's Annual Report on Form 10-K for the year ended December 28, 2024, and in other filings and submissions with the SEC, each of which are available free of charge on the company’s investor relations website at investor.littelfuse.com and on the SEC’s website at www.sec.gov. These forward-looking statements are made as of the date hereof. The company does not undertake any obligation to update, amend or clarify these forward-looking statements to reflect events or circumstances after the date hereof or to reflect the availability of new information.

-more

Page 4

Non-GAAP Financial Measures

The information included in this press release includes the non-GAAP financial measures of organic net sales (decline) growth, adjusted operating income, adjusted operating margin, adjusted EBITDA, adjusted EBITDA margin, adjusted diluted earnings per share, adjusted income taxes, adjusted effective tax rate, free cash flow, net debt, consolidated EBITDA, and consolidated net leverage ratio (as defined in the credit agreement). Many of these non-GAAP financial measures exclude the effect of certain expenses and income not related directly to the underlying performance of our fundamental business operations. A reconciliation of these non-GAAP financial measures to the most directly comparable GAAP financial measures is set forth in the attached schedules. The company believes that organic net sales (decline) growth, adjusted operating income, adjusted operating margin, adjusted EBITDA, adjusted EBITDA margin, adjusted diluted earnings per share, adjusted income taxes, and adjusted effective tax rate provide useful information to investors regarding its operational performance because they enhance an investor’s overall understanding of our core financial performance and facilitate comparisons to historical results of operations, by excluding items that are not related directly to the underlying performance of our fundamental business operations or were not part of our business operations during a comparable period. The company believes that free cash flow is a useful measure of its ability to generate cash. The company believes that net debt, consolidated EBITDA, and consolidated net leverage ratio are useful measures of its credit position. The company believes that all of these non-GAAP financial measures are commonly used by financial analysts and others in the industries in which we operate, and thus further provide useful information to investors. Management additionally uses these measures when assessing the performance of the business and for business planning purposes. Note that our definitions of these non-GAAP financial measures may differ from those terms as defined or used by other companies.

LFUS-F

###


			Littelfuse Inc. 6133 North River Road, Suite 500 Rosemont, Illinois 60018 p: (773) 628-1000 www.littelfuse.com

Page 4

LITTELFUSE, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS


	(Unaudited)
(in thousands, except share and per share data)	March 29, 2025		December 28, 2024
ASSETS
Current assets:
Cash and cash equivalents	$	618,687	$	724,924
Short-term investments	984		976
Trade receivables, less allowances of $69,244 and $69,990 at March 29, 2025 and December 28, 2024, respectively	317,828		294,371
Inventories	417,102		416,273
Prepaid income taxes and income taxes receivable	8,245		11,749
Prepaid expenses and other current assets	70,238		103,716
Total current assets	1,433,084		1,552,009











Net property, plant, and equipment	510,336		477,068
Intangible assets, net of amortization	475,645		482,118
Goodwill	1,307,941		1,228,502
Investments	21,821		23,245
Deferred income taxes	5,581		4,899
Right of use lease assets	85,028		72,211
Other long-term assets	48,799		51,727
Total assets	$	3,888,235	$	3,891,779
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	176,450	$	188,359



Accrued liabilities	139,815		148,276
Accrued income taxes	35,592		29,658
Current portion of long-term debt	17,710		67,612
Total current liabilities	369,567		433,905
Long-term debt, less current portion	787,980		788,502
Deferred income taxes	95,416		95,532
Accrued post-retirement benefits	30,751		29,836
Non-current lease liabilities	72,243		60,559
Other long-term liabilities	75,523		69,833








Total equity	2,456,755		2,413,612
Total liabilities and equity	$	3,888,235	$	3,891,779

Page 5

LITTELFUSE, INC.

CONDENSED CONSOLIDATED STATEMENTS OF NET INCOME

(Unaudited)


	Three Months Ended
(in thousands, except per share data)	March 29, 2025		March 30, 2024
Net sales	$	554,307	$	535,385
Cost of sales	347,051		347,577
Gross profit	207,256		187,808

Selling, general, and administrative expenses	87,708		86,127

Research and development expenses	26,048		27,667
Amortization of intangibles	14,331		15,825
Restructuring, impairment, and other charges	9,019		3,237
Total operating expenses	137,106		132,856
Operating income	70,150		54,952

Interest expense	8,875		9,611
Foreign exchange loss (gain)	4,843		(5,042)
Other income, net	(3,515)		(5,321)
Income before income taxes	59,947		55,704
Income taxes	16,376		7,252
Net income	$	43,571	$	48,452

Earnings per share:
Basic	$	1.76	$	1.95
Diluted	$	1.75	$	1.93

Weighted-average shares and equivalent shares outstanding:
Basic	24,767		24,911
Diluted	24,963		25,124

Comprehensive income	$	81,168	$	18,161

Page 6

LITTELFUSE, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)


	Three Months Ended
(in thousands)	March 29, 2025		March 30, 2024
OPERATING ACTIVITIES
Net income	$	43,571	$	48,452
Adjustments to reconcile net income to net cash provided by operating activities:	37,658		28,729















Changes in operating assets and liabilities:
Trade receivables	(14,745)		(12,723)
Inventories	8,699		16,179
Accounts payable	(8,772)		345



Accrued liabilities and income taxes	(8,044)		(28,042)
Prepaid expenses and other assets	7,391		4,210
Net cash provided by operating activities	65,758		57,150

INVESTING ACTIVITIES
Acquisitions of businesses, net of cash acquired	(57,417)		—

Purchases of property, plant, and equipment	(23,102)		(15,547)
Net proceeds from sale of property, plant and equipment, and other	11		7,064
Net cash used in investing activities	(80,508)		(8,483)

FINANCING ACTIVITIES
Net payments of credit facility	(53,750)		(1,875)







Repurchases of common stock	(27,374)		(16,131)


Cash dividends paid	(17,335)		(16,200)
All other cash provided by financing activities	1,425		686
Net cash used in financing activities	(97,034)		(33,520)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	5,603		(8,550)
(Decrease) increase in cash, cash equivalents, and restricted cash	(106,181)		6,597
Cash, cash equivalents, and restricted cash at beginning of period	726,437		557,123
Cash, cash equivalents, and restricted cash at end of period	$	620,256	$	563,720

Page 7

LITTELFUSE, INC.

NET SALES AND OPERATING INCOME BY SEGMENT

(Unaudited)


	First Quarter
(in thousands)	2025			2024			% (Decline) / Growth
Net sales
Electronics	$	307,249		$	291,105		5.5	%
Transportation	161,862			170,367			(5.0)	%
Industrial	85,196			73,913			15.3	%
Total net sales	$	554,307		$	535,385		3.5	%

Operating income
Electronics	$	46,766		$	37,803		23.7	%
Transportation	18,917			16,206			16.7	%
Industrial	13,074			4,796			172.6	%
Other(a)	(8,607)			(3,853)			N.M.
Total operating income	$	70,150		$	54,952		27.7	%
Operating Margin	12.7		%	10.3		%

Interest expense	8,875			9,611
Foreign exchange loss (gain)	4,843			(5,042)
Other income, net	(3,515)			(5,321)
Income before income taxes	$	59,947		$	55,704		7.6	%

(a) "other" typically includes non-GAAP adjustments such as acquisition-related and integration costs, purchase accounting inventory adjustments and restructuring and impairment charges. (See Supplemental Financial Information for details.)

N.M. - Not meaningful


	First Quarter
(in thousands)	2025		2024		% Growth
Operating Margin
Electronics	15.2	%	13.0	%	2.2	%
Transportation	11.7	%	9.5	%	2.2	%
Industrial	15.3	%	6.5	%	8.8	%

Page 8

LITTELFUSE, INC.

SUPPLEMENTAL FINANCIAL INFORMATION

(In millions of USD except per share amounts - unaudited)


Non-GAAP EPS reconciliation
	Q1-25		Q1-24
GAAP diluted EPS	$	1.75	$	1.93
EPS impact of Non-GAAP adjustments (below)	0.44		(0.17)
Adjusted diluted EPS	$	2.19	$	1.76


Non-GAAP adjustments - (income) / expense
	Q1-25		Q1-24
Acquisition-related and integration costs (a)	$	0.1	$	0.9

Purchase accounting inventory adjustments (b)	(0.5)		—
Restructuring, impairment and other charges (c)	9.0		3.2
Gain on sale of fixed assets (d)	—		(0.3)

Non-GAAP adjustments to operating income	8.6		3.8
Other income, net (e)	—		0.2
Non-operating foreign exchange loss (gain)	4.8		(5.0)
Non-GAAP adjustments to income before income taxes	13.4		(1.0)
Income taxes (f)	2.3		3.3
Non-GAAP adjustments to net income	$	11.1	$	(4.3)

Total EPS impact	$	0.44	$	(0.17)


Adjusted operating margin / Adjusted EBITDA reconciliation
	Q1-25			Q1-24
Net income	$	43.6		$	48.5
Add:
Income taxes	16.4			7.3
Interest expense	8.9			9.6
Foreign exchange loss (gain)	4.8			(5.0)
Other income, net	(3.5)			(5.3)
GAAP operating income	$	70.2		$	55.0
Non-GAAP adjustments to operating income	8.6			3.8
Adjusted operating income	$	78.8		$	58.8
Amortization of intangibles	14.3			15.8
Depreciation expense	18.4			16.7
Adjusted EBITDA	$	111.5		$	91.3

Net sales	$	554.3		$	535.4
Net income as a percentage of net sales	7.9		%	9.1		%
Operating margin	12.7		%	10.3		%
Adjusted operating margin	14.2		%	11.0		%
Adjusted EBITDA margin	20.1		%	17.1		%

Page 9


Adjusted EBITDA by Segment	Q1-25									Q1-24
	Electronics			Transportation			Industrial			Electronics			Transportation			Industrial
GAAP operating income	$	46.8		$	18.9		$	13.1		$	37.8		$	16.2		$	4.8
Add:
Add back amortization	9.8			3.3			1.2			9.8			3.4			2.6
Add back depreciation	11.4			5.5			1.5			10.0			5.3			1.4

Adjusted EBITDA	$	68.0		$	27.7		$	15.8		$	57.6		$	24.9		$	8.8
Adjusted EBITDA Margin	22.1		%	17.1		%	18.5		%	19.8		%	14.6		%	11.9		%


Net sales reconciliation	Q1-25 vs. Q1-24
	Electronics		Transportation		Industrial		Total
Net sales growth (decline)	6	%	(5)	%	15	%	4	%
Less:
Acquisitions	4	%	—	%	—	%	2	%


FX impact	(1)	%	(1)	%	(1)	%	(1)	%
Organic net sales growth (decline)	3	%	(4)	%	16	%	3	%


Income tax reconciliation
	Q1-25			Q1-24
Income taxes	$	16.4		$	7.3
Effective rate	27.3		%	13.0		%
Non-GAAP adjustments - income taxes	2.3			3.3
Adjusted income taxes	$	18.7		$	10.6
Adjusted effective rate	25.5		%	19.3		%
Free cash flow reconciliation
	Q1-25			Q1-24
Net cash provided by operating activities	$	65.8		$	57.1
Less: Purchases of property, plant and equipment	(23.1)			(15.5)
Free cash flow	$	42.7		$	41.6

Page 10


Consolidated Total Debt	As of March 29, 2025


Consolidated Total Debt	$	805.7
Unamortized debt issuance costs	2.5
Finance lease liability	0.2
Consolidated funded indebtedness	808.4
Cash held in U.S. (up to $400 million)	174.0
Net debt	$	634.4

Consolidated EBITDA	Twelve Months Ended March 29, 2025
Net Income	$	95.1
Interest expense	38.0
Income taxes	60.8
Depreciation	70.1
Amortization	60.6
Non-cash additions:
Stock-based compensation expense	27.2

Unrealized loss on investments	1.1
Impairment charges	92.7
Other	24.8
Consolidated EBITDA (1)	$	470.4

Consolidated Net Leverage Ratio (as defined in the Credit Agreement) *	1.3x

* Our Credit Agreement and Private Placement Note with maturities ranging from 2024 to 2032, contain financial ratio covenants providing that if, as of the last day of each fiscal quarter, the Consolidated Net Leverage ratio at such time for the then most recently concluded period of four consecutive fiscal quarters of the Company exceeds 3.50:1.00, an Event of Default (as defined in the Credit Agreement and Private Placement Senior Notes) is triggered.

The Credit Agreement and Private Placement Senior Notes were amended in Q2 2022 and now allow for the addition of acquisition and integration costs up to 15% of Consolidated EBITDA and the netting of up to $400M of Available Cash (Cash held by US Subsidiaries).

(1) Represents Consolidated EBITDA as defined in our Credit Agreement and Private Placement Senior Notes and is calculated using the most recently concluded period of four consecutive quarters.

Note: Total will not always foot due to rounding.

(a) reflected in selling, general and administrative expenses ("SG&A").

(b) reflected in cost of sales.

(d) 2024 amount reflected a gain of $0.3 million gain from the sale of a building within the Transportation segment.

(e) 2024 amount reflected $0.2 million increase in coal mining reserves.

(f) reflected the tax impact associated with the non-GAAP adjustments.

###

Q1 2025 Earnings Release APRIL 29, 2025

2Littelfuse, Inc. © 2025 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 with the Securities and Exchange Commission, which can be found at investor.littelfuse.com. This website also provides additional information about Littelfuse. “Safe Harbor” Statement Under the Private Securities Litigation Reform Act of 1995. The statements in this presentation that are not historical facts are intended to constitute "forward-looking statements" entitled to the safe-harbor provisions of the Private Securities Litigation Reform Act. Such statements are based on Littelfuse, Inc.’s ("Littelfuse" or the "Company") current expectations and are subject to a number of factors and uncertainties, which could cause actual results to differ materially from those described in the forward-looking statements. These risks, uncertainties and other factors include, but are not limited to, risks and uncertainties relating to general economic conditions; product demand and market acceptance; economic conditions; the impact of competitive products and pricing; product quality problems or product recalls; capacity and supply difficulties or constraints; coal mining exposures reserves; cybersecurity matters; failure of an indemnification for environmental liability; exchange rate fluctuations; commodity price fluctuations; the effect of the Company's accounting policies; labor disputes and shortages; restructuring costs in excess of expectations; pension plan asset returns less than assumed; uncertainties related to political or regulatory changes; integration of acquisitions may not be achieved in a timely manner, or at all; limited realization of the expected benefits from investment and strategic plans; and other risks which may be detailed in the company's Securities and Exchange Commission filings. Should one or more of these risks or uncertainties materialize or should the underlying assumptions prove incorrect, actual results and outcomes may differ materially from those indicated or implied in the forward- looking statements. This presentation should be read in conjunction with information provided in the financial statements appearing in the company's Annual Report on Form 10-K for the year ended December 28, 2024. Further discussion of the risk factors of the company can be found under the caption "Risk Factors" in the company's Annual Report on Form 10-K for the year ended December 28, 2024, and in other filings and submissions with the SEC, each of which are available free of charge on the company’s investor relations website at investor.littelfuse.com and on the SEC’s website at http://www.sec.gov. These forward-looking statements are made as of the date hereof. The company does not undertake any obligation to update, amend or clarify these forward-looking statements to reflect events or circumstances after the date hereof or to reflect the availability of new information. Non-GAAP Financial Measures. The information included in this presentation includes the non-GAAP financial measures of organic net sales growth, adjusted operating margin, adjusted EBITDA margin, adjusted diluted earnings per share, adjusted effective tax rate, free cash flow, and consolidated net leverage ratio (as defined in the credit agreement). A reconciliation of these non-GAAP financial measures to the most directly comparable GAAP financial measures are set forth in the appendix. The company believes that these non-GAAP financial measures provide useful information to investors regarding its operational performance, ability to generate cash and its credit position enhancing an investor’s overall understanding of its core financial performance. The company believes that free cash flow is a useful measure of its ability to generate cash. The company believes that these non-GAAP financial measures are commonly used by financial analysts and provide useful information to analysts. Management uses these measures when assessing the performance of the business and for business planning purposes. Note that the definitions of these non-GAAP financial measures may differ from those terms as defined or used by other companies.

3Littelfuse, Inc. © 2025 WELCOME NEW CEO DR. GREG HENDERSON Key Observations ✓ Littelfuse is a leader in developing smart solutions that enable safe & efficient electrical energy transfer. ✓ We have a highly talented team and a well-positioned global operating model. ✓ We have a history of strong profitability and cash generation that provide a solid foundation for long-term success. Go Forward Priorities 1. Enhance our focus to capitalize on future growth opportunities 2. Provide more complete solutions for a broader set of customers 3. Drive further operational excellence to amplify long-term performance

4Littelfuse, Inc. © 2025 TECHNOLOGY SPOTLIGHT – DATA CENTER CAPABILITIES Empowering a Sustainable Data Center ▪ Key supplier and partner to leading data center hyperscaler and infrastructure innovators ▪ Leading capabilities range from power distribution and on-the-rack power shelves to cooling and power supply ▪ Leveraging passive and protection leadership; power semi and switching capabilities ▪ Driving improved power efficiency & safety ▪ Robust new business opportunity funnel

5Littelfuse, Inc. © 2025 Q1 2025 FINANCIAL SUMMARY Strong first quarter performance as sales and EPS exceeded the prior guided range01 Q1 momentum across all businesses reflected in sequential sales growth and improved book-to-bill02 Into Q2, we have a strong backlog and are focused on executing through an uncertain environment 03 We are hard at work with a goal to further leverage our strengths and sharpen our strategic playbook04

6Littelfuse, Inc. © 2025 Q1 2025 TOTAL COMPANY ▪ Revenue +4% reported and +3% organically vs. PY ▪ GAAP op margin 12.7%; Adjusted op margin 14.2%, +320 bps vs PY ▪ Strong operational performance, conversion on sales growth ▪ Effective tax rate: GAAP 27.3%; Adj. 25.5% ▪ Q1 Op cash flow $66m; Free cash flow $43m, +3% vs PY ▪ FCF conversion of 98% FINANCIAL PERFORMANCE GAAP EPS $1.93 $1.75 Adj. EPS $1.76 $2.19 Adj. EBITDA% 17.1% 20.1% $535 $554 Q1-24 Q1-25 Revenue (in millions) See appendix for GAAP to non-GAAP reconciliation

7Littelfuse, Inc. © 2025 CASH GENERATION & CAPITAL DEPLOYMENT Well-positioned business model & execution drive robust long-term cash generation – Prioritizing growth investments – Disciplined approach to working capital management – Targeting 100+% conversion in FCF – Strong and flexible balance sheet supports capital deployment strategy History of thoughtful capital allocation – Strategic acquisitions – Dividends and share repurchases Q1 2025 capital deployment – returned $45m to shareholders – $17m dividend payment – $27m via share repurchase See appendix for GAAP to non-GAAP reconciliation

8Littelfuse, Inc. © 2025 Q1 2025 ELECTRONICS SEGMENT ▪ Revenue +6% reported and +3% organically vs. PY ▪ Passive products +12% vs. PY; +13% organic ▪ Semiconductors flat vs. PY; (-5%) organic ▪ +4% from Dortmund capacity sharing agreement ▪ Improved Passive Products & Protection orders, continued soft Power Semiconductor demand ▪ Q1 Op margin 15.2%, +220 bps vs PY ▪ Strong conversion on Passive Products & Protection volume recovery FINANCIAL PERFORMANCE Op Margin 13.0% 15.2% Adj. EBITDA% 19.8% 22.1% $291 $307 Q1-24 Q1-25 Revenue (in millions) See appendix for GAAP to non-GAAP reconciliation

9Littelfuse, Inc. © 2025 Q1 2025 TRANSPORTATION SEGMENT ▪ Revenue (-5%) reported and (-4%) organically vs. PY ▪ Passenger vehicle (-7%) / Organic (-6%) ▪ Lower global car builds, unfavorable regional mix & planned auto sensor pruning ▪ Commercial vehicle (-2%) / Organic (-2%) ▪ Continued end market demand softness ▪ Q1 Op margin 11.7%, +220 bps vs PY ▪ Focus on profitability initiatives amid soft demand conditions FINANCIAL PERFORMANCE Op Margin 9.5% 11.7% Adj. EBITDA% 14.6% 17.1% $170 $162 Q1-24 Q1-25 Revenue (in millions) See appendix for GAAP to non-GAAP reconciliation

10Littelfuse, Inc. © 2025 Q1 2025 INDUSTRIAL SEGMENT ▪ Revenue +15% reported and +16% organically vs. PY ▪ Strong renewable, data center and HVAC growth; favorable pricing ▪ Q1 Op margin 15.3%, +880 bps vs PY ▪ Strong execution, conversion on sales growth FINANCIAL PERFORMANCE Op Margin 6.5% 15.3% Adj. EBITDA% 11.9% 18.5% $74 $85 Q1-24 Q1-25 Revenue (in millions) See appendix for GAAP to non-GAAP reconciliation

11Littelfuse, Inc. © 2025 GLOBAL FOOTPRINT, FLEXIBLE OPERATING MODEL Global footprint strategically positioned to support customers in-region – Balanced revenue exposure – Strategically positioned close to customers and supply chains – Local teams in local markets Flexible operating model – History of footprint diversification – Asset-light manufacturing (2024 CapEx % of sales ~3.5%) – Ability to quickly flex cost structure; playbook for uncertain environment Strong tariff mitigation playbook for a dynamic environment – Working with customers to flex logistics and sourcing options – Implementing pricing actions when necessary US, 37% China, 23% Europe, 21% ROW, 15% 2024 Revenue Mix by Region China, 15% Mexico, 60% Europe, 5% All Other, 20% 2024 US Sales Sourcing by Region* *Company estimate Note: MX ~90% tariff exempt Littelfuse Global Operating Footprint

12Littelfuse, Inc. © 2025 Q2 2025 GUIDANCE ▪ Entered Q2 with momentum and a strong backlog ▪ Prepared to navigate an uncertain environment ▪ Flexible operating model, experienced global teams & a strong balance sheet ▪ Deploying a strong tariff mitigation playbook ▪ Sales $565m - $595m ▪ +5% sequential, +4% vs PY ▪ +2% growth from Dortmund capacity sharing agreement ▪ +2% from pricing related to tariff recoveries ▪ Adj. EPS $2.10- $2.40 ▪ Expected adj. effective tax rate 23-25% (in millions) $558 $554 $565 - $595 Q2-24 Q1-25 Q2-25 Revenue Adj. EPS $1.97 $2.19 $2.10 - $2.40 GAAP EPS $1.82 $1.75 - See appendix for GAAP to non-GAAP reconciliation

13Littelfuse, Inc. © 2025 FULL YEAR 2025 CONSIDERATIONS / EXPECTATIONS ▪ FY Dortmund capacity sharing agreement impact… +2% growth to Company sales, Neutral EPS impact ▪ F/X & Commodities +1% tailwind to sales; ~+$0.40 benefit to EPS, +60 bps margin benefit at current rates ▪ Other Assumptions – $58m amortization expense – $35m interest expense, expect to offset ~2/3 with interest income from cash investment strategies – Adj. effective tax rate 23-25% ▪ Expect ~100% free cash flow conversion – Projecting ~$90-95m investment in capital expenditures Focused on Executing Through an Uncertain Environment While Not Losing Sight of Strategic Priorities

15Littelfuse, Inc. © 2025 SUPPLEMENTAL FINANCIAL INFORMATION Note: Total will not always foot due to rounding. (a) reflected in selling, general and administrative expenses ("SG&A"). (b) reflected in cost of sales. (c) reflected in restructuring, impairment and other charges. (c) 2024 amount reflected a gain of $0.3 million gain from the sale of a building within the Transportation segment. (d) 2024 amount reflected $0.2 million increase in coal mining reserves. (e) reflected the tax impact associated with the non-GAAP adjustments.

20Littelfuse, Inc. © 2025 SUPPLEMENTAL FINANCIAL INFORMATION CONT’D * Our Credit Agreement and Private Placement Note with maturities ranging from 2024 to 2032, contain financial ratio covenants providing that if, as of the last day of each fiscal quarter, the Consolidated Net Leverage ratio at such time for the then most recently concluded period of four consecutive fiscal quarters of the Company exceeds 3.50:1.00, an Event of Default (as defined in the Credit Agreement and Private Placement Senior Notes) is triggered. The Credit Agreement and Private Placement Senior Notes were amended in Q2 2022 and now allow for the addition of acquisition and integration costs up to 15% of Consolidated EBITDA and the netting of up to $400M of Available Cash (Cash held by US Subsidiaries). (1) Represents Consolidated EBITDA as defined in our Credit Agreement and Private Placement Senior Notes and is calculated using the most recently concluded period of four consecutive quarters.

21Littelfuse, Inc. © 2025 SUPPLEMENTAL FINANCIAL INFORMATION CONT’D Note: Total will not always foot due to rounding. (a) reflected in selling, general and administrative expenses ("SG&A"). (b) reflected in restructuring, impairment and other charges. (c) 2024 amount reflected a gain of $0.7 million recorded for the sale of building within the Transportation segment. (d) Q2 2024 included a reversal of $0.5 million for an asset retirement obligation charge related the disposal of a business in 2019. (e) reflected the tax impact associated with the non-GAAP adjustments.