Press Release

Harmonic Announces Presentation at the Stifel Nicolaus 11th Annual Technology Conference

February 5, 2013

Harmonic Announces Presentation at the

Stifel Nicolaus 11th Annual Technology Conference

SAN JOSE, Calif. February 5, 2013 -  Harmonic Inc. (NASDAQ: HLIT) today announced that Carolyn Aver, Chief Financial Officer, and Peter Alexander, Chief Marketing Officer, will make a presentation at the Stifel Nicolaus 11th Annual Technology Conference on Thursday, February 7 at 1:35 p.m. PST.  The live audio webcast of the presentation will be available from Harmonic's website, www.harmonicinc.com, under the Investor Relations Events section.  An audio replay will be available following the live presentation at the same address.

About Harmonic Inc.

Harmonic (HLIT) is the worldwide leader in video delivery infrastructure for emerging television and video services. The company's production-ready innovation enables content and service providers to efficiently create, prepare, and deliver differentiated services for television and new media video platforms. More information is available at www.harmonicinc.com.

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Contacts:

Carolyn V. Aver   Michael Bishop
Chief Financial Officer   Investor Relations for
Harmonic Inc.   Harmonic Inc.
+1.408.542.2500   +1.415.217.4968

HUG#1675425