X0202 4 2005-03-10 0 0001013857 PEGASYSTEMS INC pega 0001222572 DARBELOFF ALEXANDER V C/O PEGASYSTEMS INC 101 MAIN STREET CAMBRIDGE MA 02142 1 0 0 0 Common stock 2005-03-10 4 S 0 100 5.65 D 599400 D common stock 2005-03-10 4 S 0 257 5.6639 D 599143 D common stock 2005-03-10 4 S 0 300 5.67 D 598843 D common stock 2005-03-10 4 S 0 100 5.68 D 598743 D common stock 2005-03-10 4 S 0 200 5.685 D 598543 D common stock 2005-03-10 4 S 0 500 5.69 D 598043 D common stock 2005-03-10 4 S 0 300 5.6933 D 597743 D common stock 2005-03-10 4 S 0 343 5.7 D 597400 D common stock 2005-03-10 4 S 0 400 5.705 D 597000 D common stock 2005-03-10 4 S 0 1200 5.71 D 595800 D common stock 2005-03-10 4 S 0 300 5.72 D 595500 D common stock 2005-03-10 4 S 0 200 5.725 D 595300 D common stock 2005-03-10 4 S 0 300 5.73 D 595000 D Shawn Hoyt, Esq., as Attorney-in-Fact for Alexander d'Arbeloff 2005-03-14