RIB Software AG 11.02.2011 15:10 Dissemination of a Voting Rights Announcement, transmitted by DGAP - a company of EquityStory AG. The issuer is solely responsible for the content of this announcement. --------------------------------------------------------------------------- On February 10, 2011, Mr Hans-Joachim Sander, Deutschland has informed us according to Article 21, Section 1 of the WpHG that via shares his Voting Rights on RIB Software AG, Stuttgart, Deutschland, ISIN: DE000A0Z2XN6, WKN: A0Z2XN, have fallen below the 5% threshold of the Voting Rights on February 10, 2011 and on that day amounted to 4.62% (this corresponds to 1787677 Voting Rights). 11.02.2011 DGAP's Distribution Services include Regulatory Announcements, Financial/Corporate News and Press Releases. Media archive at www.dgap-medientreff.de and www.dgap.de --------------------------------------------------------------------------- Language: English Company: RIB Software AG Vaihinger Str. 151 70567 Stuttgart Deutschland Internet: www.rib-software.com End of Announcement DGAP News-Service ---------------------------------------------------------------------------