Harmonic Announces Audio Webcast Presentations at Investor Conferences

Harmonic Inc. (Nasdaq: HLIT) today announced that it will make a presentation at the following investment conferences:

• Barclays Capital Global Worldwide Wireless and Wireline Conference
  May 27, 2009 at 3:45 P.M. (Eastern)
• Bank of America Merrill Lynch 2009 Technology Conference
  June 3, 2009 at 1:30 P.M. (Eastern)
• RBC Capital Markets 2009 Technology, Media and Communications Conference
  June 9, 2009 at 10:00 A.M. (Pacific)
• UBS Global Technology and Services Conference
  June 10, 2009 at 9:30 A.M. (Eastern)

The live audio webcasts of Harmonic’s 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 the respective presentation dates at the same Web address.

About Harmonic Inc.

Harmonic Inc. is a leading provider of versatile and high performance video solutions that enable service providers to efficiently deliver the next generation of broadcast and on-demand video services, including high definition, video-on-demand, network personal video recording and time-shifted TV. Cable, satellite, broadcast and telecom service providers can utilize Harmonic’s digital video, broadband optical access and software solutions to offer consumers a compelling and personalized viewing experience.

Harmonic (NASDAQ: HLIT) is headquartered in Sunnyvale, California with R&D, sales and system integration centers worldwide. The Company’s customers, including many of the world’s largest communications providers, deliver services in virtually every country. Visit www.harmonicinc.com for more information.