Harmonic Announces Audio Webcast Presentation at Various Investor Conferences

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

• Kaufman Brothers 12^th Annual Investor Conference, September 10, 2009 at 2:30 P.M. (Eastern)
• Deutsche Bank 2009 Technology Conference, September 14, 2009 at 4:15 P.M. (Pacific)
• C. L. King’s Best Ideas Conference, September 16, 2009 at 9:00 A.M. (Eastern)
• Jefferies 3^rd Annual Technology Conference, September 16, 2009 at 11:15 A.M. (Eastern)

The live audio webcast of the presentations 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 redefining video delivery with the industry’s most powerful solutions for live and on-demand content preparation and distribution of video to TVs, PCs and mobile devices. Harmonic’s 20 years of technical innovation and market leadership enable the Company to offer a unique and comprehensive solution portfolio—including encoding, transcoding, content preparation, stream processing, asset management, edge processing, and delivery. Broadcast, cable, Internet, mobile, satellite and telecom service providers around the world choose Harmonic’s IP-based digital video, software, and broadband edge and access solutions. Using these award-winning and industry-leading solutions, operators can reduce costs and differentiate their services by offering consumers a higher quality, personalized multi-screen 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.