X0306 4 2019-10-31 0 0001633978 Lumentum Holdings Inc. LITE 0001234673 LOWE ALAN S C/O LUMENTUM HOLDINGS INC. 400 NORTH MCCARTHY BLVD. MILPITAS CA 95035 1 1 0 0 Chief Executive Officer Common Stock 2019-10-31 4 S 0 41643 61.0436 D 191893 D 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 $60.92 to $61.17. 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 2019-11-01