LITE · Lumentum Holdings Inc. · Insider Trading

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 28, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $858.595 to $859.42.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $851.935 to $852.87.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $854.295 to $855.17.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $847.00 to $847.99.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $856.22 to $857.21.

These securities are restricted stock units ("RSUs"). Each RSU represents a contingent right to receive, following vesting, one share of the Issuer's Common Stock. 1/3 of the shares shall vest one year from the grant date, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter on the 15th of November, February, May and August, subject to the Reporting Person continuing to be an employee through each such date, or as provided under the Issuer's 2025 Equity Incentive Plan.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 19, 2026.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $855.17 to $856.15.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $849.08 to $850.03.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $857.365 to $858.255.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $845.00 to $845.99.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $854.17 to $855.155.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $852.175 to $853.17.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $853.18 to $854.17.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $844.20 to $845.00.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $843.13 to $843.94.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $841.745 to $842.695. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide full information regarding the number of shares sold at each separate price, within the ranges set forth in footnotes (2) through (19) to this Form 4, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $843.00 to $843.93.

These securities are restricted stock units ("RSUs"). Each RSU represents a contingent right to receive, following vesting, one share of the Issuer's Common Stock. 1/3 of the shares shall vest one year from the grant date, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter on the 15th of November, February, May and August, subject to the Reporting Person continuing to be an employee through each such date, or as provided under the Issuer's 2025 Equity Incentive Plan.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $850.915 to $851.61.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $842.06 to $843.02. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide full information regarding the number of shares sold at each separate price, within the ranges set forth in footnotes (2) through (17) to this Form 4, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.

These securities are restricted stock units ("RSUs"). Each RSU represents a contingent right to receive, following vesting, one share of the Issuer's Common Stock. 1/3 of the shares shall vest one year from the grant date, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter on the 15th of November, February, May and August, subject to the Reporting Person continuing to be an employee through each such date, or as provided under the Issuer's 2025 Equity Incentive Plan.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $846.475 to $847.44.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 6, 2026.

These sales were executed in multiple trades at prices ranging from $848.51 to $849.495.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $846.00 to $846.99.

These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 13, 2025.

These sales were executed in multiple trades at prices ranging from $857.53 to $858.51.

These securities are restricted stock units ("RSUs"). Each RSU represents a contingent right to receive, following vesting, one share of the Issuer's Common Stock. 1/3 of the shares shall vest one year from the grant date, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter on the 15th of November, February, May and August, subject to the Reporting Person continuing to be an employee through each such date, or as provided under the Issuer's 2025 Equity Incentive Plan.

The number of shares reported as beneficially owned following the reported transaction is as of August 25, 2026 and prior to other transactions that occurred August 25, 2026 and August 26, 2026 as reported in a Form 4 filed by the Reporting Person on August 26, 2026.