X0306 4 2018-06-08 1 0000851310 HARMONIC INC HLIT 0001124476 REDDERSEN WILLIAM F 4300 NORTH FIRST STREET SAN JOSE CA 95134 1 0 0 0 Common Stock 2018-06-08 4 M 0 9040 0.00 A 208614 D Restricted Stock Unit 0.00 2018-06-08 4 M 0 9040 0.00 D 2018-06-08 2018-06-08 Common Stock 9040 0 D Each restricted stock unit represents a contingent right to receive one share of HLIT common stock. In connection with Mr. Reddersen not standing for re-election at the Company's annual meeting of stockholders held on June 8, 2018 and retiring from the Company's board of directors, the vesting for Mr. Reddersen's annual restricted stock unit grant was prorated to the period he served on the Company's board, from the grant date to June 8, 2018. The grant was made on March 9, 2018 and reported in a Form 4 filed by the individual on March 12, 2018. /s/ Laura Donovan By: Attorney-in-Fact Laura Donovan 2018-06-12