2/14/02 Advent VII LP SC 13G 2:12K ANSYS, Inc. Bowne of Boston/FA Advent Atlantic & Pacific II LP³ Advent Industrial II LP³ Advent New York LP³ TA Associates Inc.³ TA Associates Service Corp.³ TA Associates VII LP³ TA Venture Investors LP³ 2/14/01 Advent VII LP SC 13G 2:12K ANSYS, Inc. Bowne of Boston/FA Advent Atlantic & Pacific II L.P.³ Advent Industrial II L.P.³ Advent New York L.P.³ Advent VII LP³ TA Associates Inc.³ TA Associates Service Corp.³ TA Associates VII L.P.³ TA Venture Investors L.P.³ 2/14/00 Advent VII LP SC 13G 1:12K Affiliated Managers Group, Inc. Bowne of Boston/FA Advent Atlantic & Pacific II LP³ Advent Industrial II LP³ Advent New York LP³ Advent VII LP³ TA Associates Inc.³ TA Associates Service Corp.³ TA Associates VII LP³ TA Venture Investors³ 2/14/00 Advent VII LP SC 13G 1:14K Amvescap plc/GA Bowne of Boston/FA Advent Atlantic & Pacific II LP³ Advent Atlantic & Pacific LP³ Advent Industrial II LP³ Advent New York LP³ Advent VI LP³ Advent VII LP³ TA Associates Inc.³ TA Associates Management LP³ TA Associates Service Corp.³ TA Associates VII LP³ TA Venture Investors LP³ 2/16/99 Advent VII LP SC 13G 1:12K Affiliated Managers Group, Inc. Bowne of Boston/FA Advent Atlantic & Pacific II L.P.³ Advent Industrial II L.P.³ Advent New York L.P.³ Advent VII LP³ TA Associates Service Corp.³ TA Associates VII L.P.³ TA Associates, Inc.³ TA Venture Investors³ 2/16/99 Advent VII LP SC 13G 1:14K Amvescap plc/GA Bowne of Boston/FA Advent Atlantic & Pacific II L.P.³ Advent Atlantic & Pacific L.P.³ Advent Industrial II L.P.³ Advent New York L.P.³ Advent VI L.P.³ Advent VII LP³ TA Associate Management L.P.³ TA Associates Service Corp.³ TA Associates VII L.P.³ TA Associates, Inc.³ TA Venture Investors L.P.³