X0306 4 2019-12-10 0 0000851310 HARMONIC INC HLIT 0001380567 Haltmayer Neven 4300 NORTH FIRST STREET SAN JOSE CA 95134 0 1 0 0 SVP, Video R&D Common Stock 2019-12-10 4 M 0 30000 5.78 A 203008 D Common Stock 2019-12-10 4 S 0 30000 8.1712 D 173008 D Common Stock 2019-12-10 4 M 0 10000 6.49 A 183008 D Common Stock 2019-12-10 4 S 0 10000 8.1712 D 173008 D Common Stock 2019-12-10 4 M 0 30000 6.49 A 203008 D Common Stock 2019-12-10 4 S 0 30000 8.192 D 173008 D Common Stock 2019-12-11 4 M 0 60000 6.49 A 233008 D Common Stock 2019-12-11 4 S 0 60000 8.173 D 173008 D Stock option/right to buy 5.78 2019-12-10 4 M 0 30000 5.78 D 2014-02-15 2020-03-15 Common Stock 30000 0 D Stock option/right to buy 6.49 2019-12-10 4 M 0 10000 6.49 D 2015-02-15 2021-03-14 Common Stock 10000 90000 D Stock option/right to buy 6.49 2019-12-10 4 M 0 30000 6.49 D 2015-02-15 2021-03-14 Common Stock 30000 60000 D Stock option/right to buy 6.49 2019-12-11 4 M 0 60000 6.49 D 2015-02-15 2021-03-14 Common Stock 60000 0 D These shares of common stock were acquired upon the exercise of a stock option/right to buy on December 10, 2019. The option was initially granted to the Reporting Person on 3/15/2013, and was identified on a Form 4 filed by the Reporting Person on 3/19/2013. These shares of common stock were acquired upon the exercise of a stock option/right to buy on December 10, 2019. The option was initially granted to the Reporting Person on 3/14/2014, and was identified on a Form 4 filed by the Reporting Person on 3/18/2014. /s/ Laura Donovan By Attorney-in-Fact Laura Donovan 2019-12-12