UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-36861 Lumentum Holdings Inc. (Exact name of Registrant as specified in its charter) Delaware 47-3108385 (State or other juri ...

Q2 FY23 Conference Call February 9, 2023 Forward Looking Statements and Financial Presentation This presentation contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These include statements regarding our expectations for our markets, customers and industry, any anticipation or guidance as to demand for our products and technology, statements regarding our expected market share, our plans and expectations ...