X0609 4 2026-05-11 0001633978 Lumentum Holdings Inc. LITE 0001648231 Lillie Brian false C/O LUMENTUM HOLDINGS INC. 1001 RIDDER PARK DRIVE SAN JOSE CA 95131 true false false false 1 Common Stock 2026-05-11 4 S 0 49 1004.335 D 13910 D These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026. Due to a 30 line-item limitation in Table I, this is the second of two Forms 4 filed by the Reporting Person. /s/ Jae Kim as Attorney-in-Fact 2026-05-12