X0306 4 2020-08-17 0 0001633978 Lumentum Holdings Inc. LITE 0001229072 COVERT HAROLD L C/O LUMENTUM HOLDINGS INC., 1001 RIDDER PARK DRIVE SAN JOSE CA 95131 1 0 0 0 Common Stock 2020-08-17 4 S 0 10000 91.5987 D 14064 D These sales were executed in multiple trades at prices ranging from $91.56 to $91.80. 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 2020-08-17