Callidus Software Schedules Fourth Quarter and Full Year 2009 Financial Results Conference Call

SAN JOSE, Calif., January 7, 2010 — Callidus Software Inc. (NASDAQ: CALD), the leader in Sales Performance Management (SPM), today announced it will report financial results for the fourth quarter and full year of 2009 on Thursday, January 28, 2010 after the market closes, followed by a conference call at 1:30 p.m. Pacific Time (PT). The conference call can be accessed via telephone and via live webcast.

What: Callidus Software Q4 and Full Year 2009 Financial Results Conference Call

When: Thursday, January 28, 2010 at 1:30 p.m. PT

Webcast site: http://phx.corporate-ir.net/phoenix.zhtml?p=irol-eventDetails&c=146634&eventID=2665665

Dial-in number: (866) 700-7101

(International callers: +1 (617) 213-8837)

Passcode: 82793900

Replay: A telephone playback and webcast replay will be available after 3:30 p.m. PT on January 28, 2010 through February 5, 2010. The webcast replay will be available at the Investor Relations section of our website under Calendar of Events.

The time or manner of the webcast may change for technical or administrative reasons outside of Callidus Software’s control.

About Callidus Software®

Callidus Software (www.callidussoftware.com, NASDAQ: CALD) is the market and technology leader in Sales Performance Management (SPM). Callidus’ customers gain a competitive advantage by maximizing sales cost efficiencies and driving improvements in sales execution. Our award-winning Software-as-a-Service (SaaS) applications set the standard for performance management across the sales force. Over 2 million employees and channel partners have their performance managed by Callidus Software.

© 2010 Callidus Software Inc. All rights reserved.

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Investor Relations Contact:
Ron Fior
Callidus Software Inc.
(408) 808-6577
ir@callidussoftware.com

Press Contact:
Jock Breitwieser
Callidus Software Inc.
(408) 975-6683
pr@callidussoftware.com