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

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o Preliminary Proxy Statement

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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)

(Name of Person(s) Filing Proxy Statement if Other Than the Registrant)

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*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Stockholder Meeting to Be Held on May 6, 2016.

	Meeting Information
CHANNELADVISOR CORPORATION	Meeting Type:	Annual Meeting
	For holders as of:	March 10, 2016
	Date: May 6, 2016	Time: 10:00 a.m.
	Location:	3025 Carrington Mill Blvd., Suite 500
		Morrisville, North Carolina 27560

	You are receiving this communication because you hold shares in the company named above.
CHANNELADVISOR CORPORATION C/O PROXY SERVICES P.O. BOX 9142 FARMINGDALE, NY 11735	This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).
	We encourage you to access and review all of the important information contained in the proxy materials before voting.
	See the reverse side of this notice to obtain proxy materials and voting instructions.

— Before You Vote —

How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE:
NOTICE AND PROXY STATEMENT		ANNUAL REPORT
How to View Online:
Have the information that is printed in the box marked by the arrow à			XXXX XXXX XXXX	(located on the
following page) and visit: www.proxyvote.com.
How to Request and Receive a PAPER or E-MAIL Copy:
If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for
requesting a copy. Please choose one of the following methods to make your request:
	1) BY INTERNET:	www.proxyvote.com
	2) BY TELEPHONE:	1-800-579-1639
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Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment
advisor. Please make the request as instructed above on or before April 22, 2016 to facilitate timely delivery.

— How to Vote —

Please Choose One of the Following Voting Methods

Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the
possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials
for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote
these shares.
Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the
box marked by the arrow à	XXXX XXXX XXXX	(located on the following page) available and follow the
instructions.
Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

Voting Items
The Board of Directors recommends that you vote
FOR Items 1 and 2:
1.	ELECTION OF DIRECTORS
	Nominees:
	01)	Aris A. Buinevicius
	02)	David J. Spitz
	03)	Timothy V. Williams
2.	RATIFICATION OF THE SELECTION OF ERNST & YOUNG LLP AS INDEPENDENT AUDITORS FOR THE FISCAL YEAR ENDING DECEMBER 31, 2016.
NOTE: Such other business as may properly come before the meeting or any adjournment thereof.