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Midas Edge

LITTELFUSE INC /DE

For the period ended Dec 27, 2025. Filed Feb 19, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 19, 2026

LFUS$385.63+8.4%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Exhibit Index

The following documents listed below that have been previously filed with the SEC (1934 Act File No. 0-20388) are incorporated herein by reference:

Incorporated by Reference Herein
Exhibit No.DescriptionFormExhibitFiling DateFile No.
2.1Stock Purchase Agreement, dated October 19, 2021, by and between Littelfuse, Inc., the Shareholders of Carling Technologies, Inc., and Christopher T. Sorenson, as Sellers’ Representative8-K2.110/20/20210-20388
2.2First Amendment to Stock Purchase Agreement, dated November 29, 2021, by and between Littelfuse, Inc., the Shareholders of Carling Technologies, Inc., and Christopher T. Sorenson10-K2.32/27/20220-20388
2.3Sale and Purchase Agreement, dated April 7, 2022, by and between Cayman NIH VI BEIT Holdings, L.P. and Littelfuse, Inc.8-K2.14/8/20220-20388
2.4Warranty Deed, dated April 7, 2022, by and between the warrantors party thereto and Littelfuse, Inc.8-K2.24/8/20220-20388
2.5Deed of Amendment No. 1 Sale and Purchase Agreement, dated July 18, 2022, by and between Cayman NIH VI BEIT Holdings, L.P. and Littelfuse, Inc.10-Q2.18/3/20220-20388
2.6Membership Interest Purchase Agreement, dated October 24, 2025, by and between Littelfuse, Inc. and Basler Holdings, LLC.8-K2.110/28/20250-20388
2.7*Letter Agreement Amending Membership Interest Purchase Agreement, dated December 11, 2025, by and between Littelfuse Inc. and Basler Holdings, LLC.
3.1Certificate of Incorporation dated November 25, 1991, as amended April 25, 1997.10-K3.12/27/20170-20388
3.2Certificate of Designations of Series A Preferred Stock.8-K4.212/1/19950-20388
3.3Bylaws, as amended and restated January 27, 2023.8-K3.12/3/20230-20388
4.1Description of Securities of Littelfuse, Inc.10-K4.12/21/20200-20388
10.1Littelfuse, Inc. Outside Directors' Equity Plan.++DEF14AA3/22/20070-20388
10.2Form of Restricted Stock Unit Award Agreement under the Littelfuse, Inc. Outside Directors' Equity Plan.++8-K99.45/1/20080-20388
10.3Form of Restricted Stock Unit Award Agreement (Outside Director) under the Littelfuse, Inc. Long-Term Incentive Plan.++S-84.45/19/20100-20388
10.4Form of Stock Option Award Agreement under the Littelfuse, Inc. Long-Term Incentive Plan.++S-84.65/19/20100-20388
10.5Littelfuse, Inc. Annual Incentive Plan, effective January 1, 2014. ++DEF14AA3/17/20140-20388
10.6Form of Stock Option Award Agreement (Executive) under the Littelfuse, Inc. Long-Term Incentive Plan. ++10-Q10.35/6/20160-20388
10.7Form of Stock Option Award Agreement (Outside Director – 2016 Grant) under the Littelfuse, Inc. Long-Term Incentive Plan. ++10-Q10.45/6/20160-20388
10.8Form of Restricted Stock Unit Award Agreement (Outside Director – 2016 Grant) under the Littelfuse, Inc. Long-Term Incentive Plan. ++10-Q10.75/6/20160-20388
10.9Letter Agreement entered into between Littelfuse, Inc. and David W. Heinzmann. Effective January 1, 2017. ++8-K10.211/16/20160-20388
Incorporated by Reference Herein
Exhibit No.DescriptionFormExhibitFiling DateFile No.
10.10Littelfuse, Inc. 3.03% Senior Note, Series A, due February 15, 2022, and 3.74% Senior Note, Series B, due February 15, 2027 Note Purchase Agreement.8-K10.112/9/20160-20388
10.11Littelfuse, Netherland C.V. 1.14% Senior Note, Series A, due December 8, 2023, and 1.83% Senior Note, Series B, due December 8, 2028 Note Purchase Agreement.8-K10.212/9/20160-20388
10.12Subsidiary Guaranty Agreement, dated December 8, 2016.8-K10.412/9/20160-20388
10.13Subsidiary Guaranty Agreement, dated as of February 15, 2017.8-K10.22/15/20170-20388
10.14Restated Littelfuse, Inc. Supplemental Retirement and Savings Plan, effective January 1, 2017. ++10-K10.502/27/20170-20388
10.15Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan. ++8-K10.15/1/20170-20388
10.16Form of 2017 Stock Option Award Agreement. ++8-K10.35/1/20170-20388
10.17Employment offer letter between Littelfuse, Inc. and Jeffrey Gorski, dated June 28, 2017. ++8-K10.18/14/20170-20388
10.18Note Purchase Agreement, dated November 15, 2017, among Littelfuse, Inc. and note purchasers listed on the signature pages thereto.8-K10.111/15/20170-20388
10.19Form of 3.78% Senior Note, Series B, due February 15, 2030.8-K4.211/15/20170-20388
10.20Subsidiary Guaranty Agreement, dated as of January 16, 2018, made by LFUS LLC, Littelfuse Commercial Vehicle, LLC, Iron Merger Co., Inc., IXYS Merger Co., LLC and SymCom, Inc. in favor of the note purchasers and the other holders.8-K10.21/18/20180-20388
10.21Littelfuse, Inc. Executive Severance Policy. ++8-K10.41/18/20180-20388
10.22IXYS Corporation 2009 Equity Incentive Plan++S-84.41/19/2018333-221147
10.23IXYS Corporation 2011 Equity Incentive Plan++S-84.51/19/2018333-221147
10.24IXYS Corporation 2013 Equity Incentive Plan++S-84.61/19/2018333-221147
10.25IXYS Corporation 2016 Equity Incentive Plan++S-84.71/19/2018333-221147
10.26Notice of Stock Option Grant and Agreement for the IXYS Corporation 2009 Equity Incentive Plan++10-Q10.48/10/2009000-26124
10.27Notice of Stock Option Grant and Agreement for IXYS Corporation 2011 Equity Incentive Plan++10-Q10.28/5/2011000-26124
10.28Notice of Stock Option Grant and Agreement for IXYS Corporation 2013 Equity Incentive Plan++10-Q10.68/9/2013000-26124
10.29Notice of Stock Option Grant and Agreement for IXYS Corporation 2016 Equity Incentive Plan++10-Q10.111/3/2016000-26124
10.30Cross Border Assumption Agreement, dated as of October 3, 2018, made by each of New Dutch B.V. and IXYS Dutch B.V. in favor of the note purchasers and the other holders.10-K10.10602/22/20190-20388
10.31Amended and Restated Employment Agreement entered into between Littelfuse Europe GmbH and Alexander Conrad, effective April 1, 2019. ++10-K10.7702/21/20200-20388
10.32Form of Restricted Stock Unit Award Agreement (Tier I) under the Littelfuse, Inc. Long-Term Incentive Plan. ++8-K10.14/24/20200-20388
10.33Form of Option Award Agreement (Tier I) under the Littelfuse, Inc. Long-Term Incentive Plan. ++8-K10.24/24/20200-20388
10.34Form of Restricted Stock Unit Award Agreement (Non-Employee Director) under the Littelfuse, Inc. Long-Term Incentive Plan. ++8-K10.34/24/20200-20388
10.35Form of Option Award Agreement (Non-Employee Director) under the Littelfuse, Inc. Long-Term Incentive Plan. ++8-K10.44/24/20200-20388
Incorporated by Reference Herein
Exhibit No.DescriptionFormExhibitFiling DateFile No.
10.36Form of Restricted Stock Unit Award Agreement (Tier II) under the Littelfuse, Inc. Long-Term Incentive Plan. ++10-Q10.64/29/20200-20388
10.37Form of Restricted Stock Unit Award Agreement (IXYS Tier II) under the IXYS Corporation Equity Incentive Plan. ++10-Q10.74/29/20200-20388
10.38Form of Retention Stock Option Award Agreement under the Littelfuse, Inc. Long-Term Incentive Plan. ++10-Q10.87/29/20200-20388
10.39Form of Retention Stock Option Award Agreement under the IXYS Corporation Equity Incentive Plan. ++10-Q10.97/29/20200-20388
10.40Form of Retention Restricted Stock Unit Award Agreement under the Littelfuse, Inc. Long-Term Incentive Plan. ++10-Q10.107/29/20200-20388
10.41Form of Retention Restricted Stock Unit Award Agreement under the IXYS Corporation Equity Incentive Plan. ++10-Q10.117/29/20200-20388
10.42Amended and Restated Littelfuse Deferred Compensation Plan for Non-Employee Directors. ++10-Q10.110/28/20200-20388
10.43First Amendment to the Littelfuse, Inc. Supplemental Retirement and Savings Plan, effective January 1, 2019.++10-K10.682/18/20210-20388
10.44Second Amendment to the Littelfuse, Inc. Supplemental Retirement and Savings Plan, effective January 1, 2020.++10-K10.692/18/20210-20388
10.45Third Amendment to the Littelfuse, Inc. Supplemental Retirement and Savings Plan, effective January 1, 2020.++10-K10.702/18/20210-20388
10.46Employment offer letter between Littelfuse, Inc. and Maggie Chu, dated April 28, 2021 ++10-Q10.17/28/20210-20388
10.47Form of 4.33% Senior Note due June 30, 2032.8-K4.15/19/20220-20388
10.48Note Purchase Agreement, dated May 18, 2022, among Littelfuse, Inc. and note purchasers listed on the signature pages thereto.8-K10.15/19/20220-20388
10.49Subsidiary Guaranty Agreement, dated July 18, 2022, among Carling Technologies, Inc., Hartland Controls Holding Corp., Hartland Controls, L.L.C., IXYS Buckeye, LLC, IXYS Integrated Circuits Division, LLC, IXYS Long Beach, Inc., IXYS USA, LLC, IXYS, LLC, LFUS LLC, Littelfuse Commercial Vehicle, LLC, Littelfuse Holding, LLC, Littelfuse International Holding, LLC, Littelfuse Mexico Holding LLC, Monolith Semiconductor Inc., Pele Technology, Inc., Reaction Tech RE, LLC, Reaction Technology Epi, LLC, Reaction Technology Incorporated, SymCom, Inc. and Zilog, Inc.8-K10.25/19/20220-20388
10.50First Amendment to 2016 Note Purchase Agreement, dated May 18, 2022, among Littelfuse, Inc., certain subsidiary guarantors, and the institutions party thereto.8-K10.35/19/20220-20388
10.51First Amendment to 2016 Cross Border Note Purchase Agreement, dated May 18, 2022, among Littelfuse Netherland C.V., Littelfuse, Inc., certain subsidiary guarantors, and the institutions party thereto.8-K10.45/19/20220-20388
10.52First Amendment to 2017 Note Purchase Agreement, dated May 18, 2022, among Littelfuse, Inc., certain subsidiary guarantors, and the institutions party thereto.8-K10.55/19/20220-20388
Incorporated by Reference Herein
Exhibit No.DescriptionFormExhibitFiling DateFile No.
10.53Amended and Restated Credit Agreement, dated as of June 30, 2022, 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, JPMorgan Chase Bank, N.A., as syndication agent, PNC Bank, National Association and BMO Harris Bank, N.A., as co-senior documentation agents, Wells Fargo Bank, National Association, as documentation agent, BofA Securities, Inc. as sole bookrunner and joint lead arranger, and JPMorgan Chase Bank, N.A., as joint lead arranger.8-K10.16/30/20220-20388
10.54First Amendment to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan.++8-K10.14/28/20230-20388
10.55Form of Change of Control Agreement.++8-K10.11/05/20240-20388
10.56Amended and Restated Annual Incentive Plan.++8-K10.12/01/20240-20388
10.57Retirement Letter, dated January 10, 2025, by and between Littelfuse, Inc. and David W. Heinzmann.++8-K10.11/13/20250-20388
10.58Offer Letter, dated January 10, 2025, by and between Littelfuse, Inc and Gregory N. Henderson.++8-K10.21/13/20250-20388
10.59Performance Share Award Agreement, dated February 10, 2025, by and between Littelfuse, Inc. and Gregory N. Henderson.++10-K10.603/13/20250-20388
10.60Form of Off-Cycle Restricted Stock Unit Award Agreement.++10-K10.613/13/20250-20388
10.61Form of Off-Cycle Littelfuse-IXYS Restricted Stock Unit Award Agreement.++10-K10.623/13/20250-20388
10.62Letter Agreement between Littelfuse, Inc. and Meenal Sethna, dated April 8, 2025. ++8-K10.14/09/20250-20388
10.63Form of Performance Share Award Agreement (Tier I) under the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan. ++8-K10.24/28/20250-20388
10.64Form of Restricted Stock Unit Award Agreement (Tier I) under the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan. ++8-K10.14/28/20250-20388
10.65Form of Restricted Stock Unit Award Agreement (Tier II) under the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan. ++10-Q10.44/30/20250-20388
10.66Form of Restricted Stock Unit Award Agreement (Non-Employee Director) under the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan. ++10-Q10.54/30/20250-20388
10.67Form of Restricted Stock Unit Award Agreement (Tier I) under the Littelfuse/IXYS Corporation Long-Term Incentive Plan. ++8-K10.34/28/20250-20388
10.68Form Restricted Stock Unit Award Agreement (Tier II) under the Littelfuse/IXYS Corporation Long-Term Incentive Plan. ++10-Q10.74/30/20250-20388
10.69Littelfuse, Inc. Long-Term Incentive Plan Subplan for Restricted Stock Units Granted to French Participants. ++10-Q10.84/30/20250-20388
10.70Offer Letter between Littelfuse, Inc. and Abhishek Khandelwal, dated May 13, 2025. ++8-K10.15/27/20250-20388
10.71Letter Agreement between Littelfuse, Inc. and Chad Marak, dated August 26, 2025.++10-Q10.110/29/20250-20388
10.72Form of Non-Compete, Non-Solicitation, Indemnification, Resignation and Release Agreement. ++8-K10.110/28/20250-20388
10.73Letter Agreement between Littelfuse, Inc. and Ryan K. Stafford, dated January 7, 2026. ++8-K10.11/08/20260-20388
Incorporated by Reference Herein
Exhibit No.DescriptionFormExhibitFiling DateFile No.
10.74* · Summary of Non-Employee Director Compensation.++
19.1Insider Trading Policy.10-K19.12/16/20240-20388
21.1*Subsidiaries.
23.1*Consent of Independent Registered Public Accounting Firm.
23.2*Consent of Independent Registered Public Accounting Firm.
31.1*Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1+++Certification of the Chief Executive Officer and Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
97.1Compensation Recovery Policy10-K97.12/16/20240-20388
101.INS*XBRL Instance Document.
101.SCH*XBRL Taxonomy Extension Schema Document.
101.CAL*XBRL Taxonomy Extension Calculation Linkbase Document.
101.LAB*XBRL Taxonomy Extension Label Linkbase Document.
101.PRE*XBRL Taxonomy Extension Presentation Linkbase Document.
101.DEF*XBRL Taxonomy Extension Definition Linkbase Document.
104The cover page on this Annual Report on Form 10-K for the fiscal year ended December 27, 2025, formatted in Inline XBRL and contained in Exhibit 101.
  • Filed with this Report.
  • Exhibits and schedules omitted pursuant to Item 601(b)(2) of Regulation S-K. Littelfuse agrees to furnish a supplemental copy of an omitted exhibit or schedule to the SEC upon request.

++ Management contract or compensatory plan or arrangement.

+++ Furnished with this Report.

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.