X0609 4 2026-08-19 0001633978 Lumentum Holdings Inc. LITE 0001648256 Retort Vincent false C/O LUMENTUM HOLDINGS INC. 1001 RIDDER PARK DRIVE SAN JOSE CA 95131 false true false false SEE REMARKS 1 Common Stock 2026-08-19 4 F 0 2574 827.60 D 111921 D Common Stock 2026-08-20 4 S 0 2483 827.82 D 109438 D Common Stock 2026-08-21 4 F 0 7509 866.71 D 101929 D Represents shares that have been withheld by the Issuer to satisfy income tax withholding and remittance obligations in connection with the vesting of restricted stock units. These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025. Officer title: Executive Vice President, Global Reliability & Quality /s/ Jae Kim as Attorney-in-Fact 2026-08-21