X0609 4 2026-08-15 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 2026-08-15 4 F 0 3299 926.14 D 86264 D Common Stock 2026-08-17 4 A 0 63956 0 A 150220 D Common Stock 2026-08-17 4 F 0 32542 968.90 D 117678 D Common Stock 2026-08-18 4 S 0 3183 909.43 D 114495 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. Represents the acquisition of shares upon the determination of the Compensation Committee of the Board of Directors of the Issuer that certain performance conditions were met with respect to certain performance stock units ("PSUs") granted to the Reporting Person on August 23, 2023. Represents shares that have been withheld by the Issuer to satisfy income tax withholding and remittance obligations in connection with the vesting of PSUs. 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 2026-08-18