Exhibit 2.7 Execution Version STOCK PURCHASE AGREEMENT BY AND AMONG COMPUWARE CORPORATION, PROXIMA TECHNOLOGY GROUP, INC., AND EACH OF THE SHAREHOLDERS OF PROXIMA TECHNOLOGY GROUP, INC. Dated as of January 2, 2007 TABLE OF CONTENTSStock Purchase Agreement • January 8th, 2007 • Compuware Corp • Services-prepackaged software • Delaware
