Lumentum Holdings Inc.

Item 3.02 Unregistered Sales of Equity Securities. On March 2, 2026, Lumentum Holdings Inc. (the “Company”) completed the issuance and sale of 2,876,415 shares of the Company’s Series A Convertible Preferred Stock, par value $0.001 per share (the “Series A Preferred Stock”) to NVIDIA Corporation (“NVIDIA”), pursuant to a Securities Purchase Agreement between the parties (the “Purchase Agreement”), dated as of March 2, 2026. The shares of Series A Preferred Stock were sold at a price of $695.31 per share for an aggregate purchase price of $2,000,000,000 in cash (the “Transaction”). The shares of Series A Preferred Stock were issued and sold to NVIDIA in a private placement relying upon the exemption provided by Section 4(a)(2) of the Securities Act of 1933 as a transaction not involving a public offering.

Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year. On March 2, 2026, the Company filed a Certificate of Designation with the Secretary of State of the State of Delaware (the “Certificate of Designation”) in connection with the Transaction. The Certificate of Designation provides for the issuance of up to 2,876,415 shares of Series A Preferred Stock. The following is a description of the material terms of the Certificate of Designation. Conversion. The Series A Preferred Stock will convert on a one-for-one basis into shares of the Company’s common stock (the “Common Stock”) (i) at the option of the holder, provided, that, no holder may exercise this conversion right until the expiration or termination of the applicable waiting period (or any extension thereof) under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and the rules and regulations promulgated thereunder or (ii) automatically immediately before the closing of a qualified sale. The Certificate of Designation defines qualified sale as the bona fide sale of the Series A Preferred Stock to the Company or a non-affiliate of the holder. Dividends. Each holder of Series A Preferred Stock will be entitled to receive dividends in the same manner as holders of Common Stock, as determined on an as-converted basis, assuming all outstanding shares of Series A Preferred Stock have converted pursuant to the terms of the Certificate of Designation as of immediately prior to the record date of the applicable dividend. Voting Rights. Other than with respect to the election of directors, for which the Series A Preferred Stock will not be entitled to vote, holders of Series A Preferred Stock will vote together with holders of the Common Stock on an as-converted basis. The Company may not alter or change adversely the powers, preferences or rights of the Series A Preferred Stock or alter or amend the Certificate of Designation without the affirmative vote or consent of a majority of the outstanding shares of Series A Preferred Stock. Dissolution, Liquidation or Winding Up. In connection with a dissolution, liquidation or winding up of the Company, distributions to the stockholders of the Company shall be made among the holders of Series A Preferred Stock and Common Stock pro rata in proportion to number of shares held by each such holder. All shares of Series A Preferred Stock shall be treated as if they had been converted to Common Stock pursuant to the terms of the Certificate of Designation immediately prior to such event. No Preemptive or Redemption Rights. The holders of Series A Preferred Stock have no preemptive or redemption rights. The foregoing description of the Series A Preferred Stock does not purport to be complete and is qualified in its entirety by reference to the Certificate of Designation, which is filed with this report as Exhibit 3.1 and is incorporated herein by reference.

Item 7.01 Regulation FD Disclosure. The joint press release issued by the Company and NVIDIA, dated March 2, 2026, announcing, among other things, the private placement pursuant to the Purchase Agreement and a strategic partnership to develop state of the art optics technology is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information contained in this Item 7.01 of this Current Report on Form 8-K, including the accompanying Exhibit 99.1 hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing made by the Company under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filings, unless expressly incorporated by specific reference in such filings.