X0306 4 2023-02-17 0 0000851310 HARMONIC INC HLIT 0001221168 GALLAGHER PATRICK 2590 ORCHARD PARKWAY SAN JOSE CA 95131 1 0 0 0 Restricted Stock Units 0.00 2023-02-17 4 A 0 10446 0.00 A 2024-02-15 2024-02-15 Common Stock 10446 10446 D Each restricted stock unit represents a contingent right to receive one share of HLIT common stock. The shares subject to the restricted stock units are scheduled to vest in full on February 15, 2024. The vested RSUs will be settled in shares within 60 days following the earliest to occur of (I) a change-in-control event, (ii) the director's separation from service from the company, or (iii) the director's death. /s/ Laura Donovan By Attorney-in-Fact Laura Donovan 2023-02-21