X0306 4 2021-09-01 0 0000851310 HARMONIC INC HLIT 0001504670 Kalra Sanjay 2590 ORCHARD PARKWAY SAN JOSE CA 95131 0 1 0 0 SVP and CFO Restricted Stock Unit 0.00 2021-09-01 4 A 0 150000 0.00 A 2022-09-01 2024-09-01 Common Stock 150000 150000 D Restricted Stock Unit 0.00 2021-09-01 4 A 0 50000 0.00 A 2022-09-01 2022-09-01 Common Stock 50000 50000 D Each restricted stock unit represents a contingent right to receive one share of HLIT common stock. Thirty three and one third percent of the Shares subject to the Restricted Stock Unit (RSU) Grant are scheduled to vest twelve months after the Vesting Commencement Date, and equal increments of the Shares subject to the RSU are scheduled to vest quarterly thereafter, until fully vested on the third anniversary of the Vesting Commencement Date. One hundred percent of the Shares subject to the Restricted Stock Unit (RSU) Grant are scheduled to vest twelve months after the Vesting Commencement Date. /s/ Laura Donovan By Attorney-in-Fact: Laura Donovan 2021-09-03