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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A INFORMATION
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
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| Filed by a Party other than the Registrant | o | 
Check the appropriate box:
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| o | Preliminary Proxy Statement | 
| o | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) | 
| o | Definitive Proxy Statement | 
| x | Definitive Additional Materials | 
| o | Soliciting Material Pursuant to § 240.14a-12 | 
ChannelAdvisor Corporation
(Name of Registrant as Specified In Its Charter)
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| (Name of Person(s) Filing Proxy Statement if other than the Registrant) | 
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