AGREEMENT AND PLAN OF MERGER AMONG MICROMUSE INC., SYDNEY ACQUISITION INC., QUALLABY CORPORATION, WILLIAM J. GEARY, AS TARGET STOCKHOLDER REPRESENTATIVE, AND THE PRINCIPAL TARGET STOCKHOLDERS Dated as of April 7, 2005Agreement and Plan of Merger • April 13th, 2005 • Micromuse Inc • Services-prepackaged software • Delaware
AGREEMENT AND PLAN OF MERGER, dated as of April 7, 2005 (this “Agreement”), by and among Micromuse Inc., a Delaware corporation (the “Parent”) and Sydney Acquisition Inc., a Delaware corporation and wholly-owned subsidiary of Parent (the “Merger Sub”), on the one hand, and Quallaby Corporation, a Delaware corporation (the “Target”), the Target Stockholder Representative (as defined below) and the Principal Target Stockholders (as defined below) on the other hand.
