Form 4 Filing for Carl Russo - Equity Transaction

Carl Russo, a 10% owner, director, and officer of CALIX, INC. (CALX), reported a transaction on September 28, 2026. The filing details the acquisition of 17,603 stock options with a right to buy common stock. These options have an exercise price of $33.19 and are set to expire on September 28, 2036. The options vest and become exercisable in stages, with 25% of the shares vesting on each anniversary of the grant date, starting September 28, 2026. The transaction code indicates an acquisition (A), and the ownership is direct (D). Following this transaction, Russo directly owns 17,603 shares of common stock underlying these options.