0000857005-06-000015 8-K 1 20060301 1.01 20060306 20060306 PARAMETRIC TECHNOLOGY CORP 0000857005 7372 042866152 MA 0930 8-K 34 000-18059 06668158 140 KENDRICK STREET NEEDHAM MA 02494 7813705000 140 KENDRICK STREET NEEDHAM MA 02494 8-K 1 ptc8k3012006.txt PTC 8-K MARCH 1, 2006