X0206 3 2023-03-03 0 0000851310 HARMONIC INC HLIT 0001968830 Rosenberg Jeremy 2590 ORCHARD PARKWAY SAN JOSE CA 95131 0 1 0 0 Interim CFO & SVP Bus Dev Common Stock 147548 D Restricted Stock Units 0.00 2022-02-15 2024-02-15 Common Stock 36398 D Restricted Stock Units 0.00 2023-02-15 2025-02-15 Common Stock 33589 D Restricted Stock Units 0.00 2023-05-15 2025-05-15 Common Stock 6000 D Restricted Stock Units 0.00 2024-02-15 2026-02-15 Common Stock 34819 D Each restricted stock unit represents a contingent right to receive one share of HLIT common stock. Thirty three percent of the Shares subject to the Restricted Stock Unit (RSU) Grant vested on February 15, 2022, and equal quarterly increments of the Shares subject to the RSU are scheduled to vest quarterly thereafter, until 100% vested as of February 15, 2024. Thirty three percent of the Shares subject to the Restricted Stock Unit (RSU) Grant vested on February 15, 2023, and equal quarterly increments of the Shares subject to the RSU are scheduled to vest quarterly thereafter, until 100% vested as of February 15, 2025. Thirty three percent of the Shares subject to the Restricted Stock Units are scheduled to vest on May 15, 2023, and equal increments of the Shares subject to the RSU are scheduled to vest quarterly thereafter, so as to be 100% vested on May 15, 2025. Thirty three percent of the Shares subject to the Restricted Stock Units are scheduled to vest on February 15, 2024, and equal increments of the Shares subject to the RSU are scheduled to vest quarterly thereafter, so as to be 100% vested on February 15, 2026. Laura A Donovan By Attorney-in-Fact: Laura Donovan 2023-03-09