Results of Operations and Financial Condition. On August 25, 2026, the Registrant issued a press release announcing its financial results for the second quarter of fiscal year 2027, which ended July 26, 2026. A copy of the press release is attached hereto as Exhibit 99.1.

Entry into a Material Definitive Agreement. On July 6, 2026 (the “Closing Date”), Semtech Corporation (the “Company”) entered into a Credit Agreement (the “Credit Agreement”), with certain of the Company’s domestic subsidiaries as subsidiary guarantors (the “Guarantors”), the lenders party thereto (“Lenders”), the letter of credit issuers party thereto, and Morgan Stanley Senior Funding, Inc., as administrative agent (in such capacity, the “Administrative Agent”) and swing line lender, consis…

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

The filing describes amendments to the Executive Severance Plan and does not involve a departure or change in management.

Results of Operations and Financial Condition. On May 26, 2026, the Registrant issued a press release announcing its financial results for the first quarter of fiscal year 2027, which ended April 26, 2026. A copy of the press release is attached hereto as Exhibit 99.1.

Results of Operations and Financial Condition. On March 16, 2026, the Registrant issued a press release announcing its financial results for the fourth quarter and fiscal year 2026, which ended January 25, 2026. A copy of the press release is attached hereto as Exhibit 99.1.

Results of Operations and Financial Condition. On November 24, 2025, the Registrant issued a press release announcing its financial results for the third quarter of fiscal year 2026, which ended October 26, 2025. A copy of the press release is attached hereto as Exhibit 99.1.

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

Entry into a Material Definitive Agreement. Convertible Notes and the Indenture On October 7, 2025, Semtech Corporation (the “Company”) priced its offering of $350 million in aggregate principal amount of 0% Convertible Senior Notes due 2030 (the “Notes”). The Notes were issued pursuant to an Indenture, dated October 10, 2025 (the “Indenture”), between the Company, the subsidiary guarantors from time to time party thereto and U.S. Bank Trust Company, National Association, as trustee (the “Tru…

Other Events. Purchase Agreement On October 7, 2025, the Company entered into a purchase agreement (the “Purchase Agreement”) with UBS Securities LLC and Morgan Stanley & Co. LLC, as representatives of the several initial purchasers named in Schedule I thereto (the “Initial Purchasers”), to issue and sell the Notes. The Purchase Agreement includes customary representations, warranties and covenants by the Company and customary closing conditions. Under the terms of the Purchase Agreement, the…

Unregistered Sales of Equity Securities. The information set forth under Items 1.01 of this Current Report on Form 8-K is incorporated herein by reference. Convertible Notes The Company offered and sold the Notes to the Initial Purchasers in reliance on the exemption from the registration requirements provided by Section 4(a)(2) of the Securities Act, and for resale by the Initial Purchasers to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under the Se…

Other Events. On October 6, 2025, Semtech Corporation (the “Company”) issued a press release announcing its intent, subject to market and other conditions, to offer $350 million in aggregate principal amount of 0% convertible senior notes due 2030 (the “Notes”) in a private placement (the “Offering”) to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”). The Company also announced that it intends to grant the initial purcha…

Results of Operations and Financial Condition. On August 25, 2025, the Registrant issued a press release announcing its financial results for the second quarter of fiscal year 2026, which ended July 27, 2025. A copy of the press release is attached hereto as Exhibit 99.1.

The provided text is only the standard Item 5.02 header and does not contain the specific details of the event required to classify the movement.

Results of Operations and Financial Condition. On May 27, 2025, the Registrant issued a press release announcing its financial results for the first quarter of fiscal year 2026, which ended April 27, 2025. A copy of the press release is attached hereto as Exhibit 99.1.

Creation of a Direct Financial Obligation or an Obligation under an Off- Balance Sheet Arrangement of a Registrant . The information set forth in

Regulation FD Disclosure. On April 28, 2025, the Company issued a press release announcing the Fourth Amendment. The press release also announced a prepayment of $10 million in principal on its Term Loan Facility using cash flow from operations, which was unrelated to the Fourth Amendment. A copy of the press release is attached hereto as Exhibit 99.1. The information disclosed under this Item 7.01 (including the Exhibit described under this

Entry into a Material Definitive Agreement. On April 24, 2025, Semtech Corporation (the "Company") entered into a Fourth Amendment (the "Fourth Amendment") to its Third Amended and Restated Credit Agreement (the "Existing Credit Agreement"), with the lenders referred to therein, certain of the Company's domestic subsidiaries party thereto as subsidiary guarantors, and JP Morgan Chase Bank, N.A., as administrative agent and issuing bank. Pursuant to the Fourth Amendment, the Company's Existing…

Results of Operations and Financial Condition. On March 13, 2025, the Registrant issued a press release announcing its financial results for the fourth quarter and fiscal year 2025, which ended January 26, 2025. A copy of the press release is attached hereto as Exhibit 99.1.

Senior Vice President — Mark P. Russell: The filing discloses the negotiated separation of a Senior Vice President with severance, representing a genuine executive departure but not a sudden loss of the CEO or CFO.

shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference to Item 7.01, as applicable in such filing. Forward-Looking Statements This report contains “forward-looking statements” within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, as amended, based on the Company’s current expectations, estimates…

* * * This Current Report on Form 8-K does not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. Forward-Looking Statements This Current Report on Form 8-K contains “forward-looking statements” within the meaning of the “safe…

Director — Rockell N. Hankin: A board member resigned immediately without disagreement, representing a standard director departure rather than a senior executive loss.

Results of Operations and Financial Condition. On November 25, 2024, the Registrant issued a press release announcing its financial results for the third quarter of fiscal year 2025, which ended October 27, 2024. A copy of the press release is attached hereto as Exhibit 99.1.

Results of Operations and Financial Condition. On August 27, 2024, the Registrant issued a press release announcing its financial results for the second quarter of fiscal year 2025, which ended July 28, 2024. A copy of the press release is attached hereto as Exhibit 99.1.