Harmonic Audio Webcast Presentation at the Jefferies 2012 Global Technology, Media & Telecom Conference

Monday, May 7, 2012

Harmonic Inc. (NASDAQ: HLIT) today announced that Patrick Harshman, President & CEO, and Carolyn Aver, Chief Financial Officer, will make a presentation at the Jefferies 2012 Global Technology, Media and Technology Conference on May 9, 2012 at 4:30 p.m. (Eastern Time). The live audio webcast of the presentation will be available from Harmonic’s website, www.harmonicinc.com, under the Investor Relations Events section. The audio replays will be available after 6:00 p.m. (Pacific) on May 9 to May 16, 2012 at the same Web address.

About Harmonic Inc.

Harmonic Inc. (NASDAQ: HLIT) provides infrastructure that powers the video economy. The company enables content and service providers to efficiently create, prepare, and deliver differentiated video services for television and new media platforms. More information is available at www.harmonicinc.com.