Lumentum Holdings Inc.

Securities Trading Plans of Directors and Executive Officers

During our last fiscal quarter, the following director and officer, as defined in Rule 16a-1(f), adopted a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” each as defined in Regulation S-K Item 408.

On November 20, 2024, Alan Lowe, our President and Chief Executive Officer and a member of our board of directors, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 120,000 shares of our common stock. The actual number of shares sold under the trading arrangement will depend on achievement of performance targets applicable to the performance stock units (“PSUs”) subject to the trading arrangement and be net of shares withheld for taxes upon vesting and settlement of the PSUs subject to the trading arrangement. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until February 19, 2026, or earlier if all transactions under the trading arrangement are completed.