UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
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CALLIDUS SOFTWARE INC.
(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 June 10, 2015. Meeting Information CALLIDUS SOFTWARE INC. Meeting Type: Annual Meeting For holders as of: April 13, 2015 Date: June 10, 2015 Time: 10:00 AM Pacific Time Location: 4140 Dublin Boulevard Suite 400 Dublin, CA 94568 You are receiving this communication because you hold shares in the company named above. 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. CALLIDUS SOFTWARE INC. ATTN: SECRETARY 4140 DUBLIN BOULEVARD SUITE 400 DUBLIN, CA 94568 M87834-P62798 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: Proxy Materials Available to VIEW or RECEIVE: 1. ANNUAL REPORT 2. NOTICE & PROXY STATEMENT How to View Online: Have the information that is printed in the box marked by the arrow (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 3) BY E-MAIL*: sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line. . XXXX XXXX XXXX XXXX . XXXX XXXX XXXX XXXX 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 May 27, 2015 to facilitate timely delivery. How To Vote M87835-P62798 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 (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. . XXXX XXXX XXXX XXXX

Voting Items The Board of Directors recommends you vote FOR the following: 1. Election of Directors Nominees: 1a. Charles M. Boesenberg 1b. Murray D. Rode 1c. Leslie J. Stretch The Board of Directors recommends you vote FOR proposals 2, 3 and 4. 2. To approve an amendment to the 2013 Stock Incentive Plan to increase the number of shares of common stock reserved for issuance under such plan by 5,000,000 shares. 3. To hold an advisory vote on executive compensation. 4. To ratify the appointment of KPMG LLP as our independent auditors for the fiscal year ending December 31, 2015. NOTE: To transact such other business as may properly come before the meeting or any adjournment or postponement thereof. M87836-P62798

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