X0306 4 2021-02-15 0 0001633978 Lumentum Holdings Inc. LITE 0001234673 LOWE ALAN S C/O LUMENTUM HOLDINGS INC. 1001 RIDDER PARK DRIVE SAN JOSE CA 95131 1 1 0 0 Chief Executive Officer Common Stock 2021-02-15 4 F 0 9702 93.95 D 136326 D Common Stock 2021-02-17 4 S 0 6026 93.0643 D 130300 D Common Stock 2021-02-17 4 S 0 3836 93.8982 D 126464 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 and performance stock units. Ownership is restated pursuant to an internal audit of the Reporting Person's holdings. These shares were sold pursuant to a Rule 10b5-1 trading plan entered into by the Reporting Person. These sales were executed in multiple trades at prices ranging from $92.515 to $93.38. 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 $93.51 to $94.19. 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/ Judy G. Hamel as Attorney-in-Fact 2021-02-17