X0609 4 2026-05-08 0001633978 Lumentum Holdings Inc. LITE 0001714910 Small Ian false C/O LUMENTUM HOLDINGS INC., 1001 RIDDER PARK DRIVE SAN JOSE CA 95131 true false false false 0 Common Stock 2026-05-08 4 S 0 2037 910.7185 D 27425 D Common Stock 2026-05-08 4 S 0 892 911.5152 D 26533 D Common Stock 2026-05-08 4 S 0 571 912.2644 D 25962 D These sales were executed in multiple trades at prices ranging from $910.02 to $911.01. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide full information regarding the number of shares and prices at which these sales were effected, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer. These sales were executed in multiple trades at prices ranging from $911.025 to $911.96. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide full information regarding the number of shares and prices at which these sales were effected, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer. These sales were executed in multiple trades at prices ranging from $912.07 to $912.72. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide full information regarding the number of shares and prices at which these sales were effected, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer. /s/ Jae Kim as Attorney-in-Fact 2026-05-12