0001193125-05-036360 10-K 9 20041231 20050225 20050224 PEGASYSTEMS INC 0001013857 7374 042787865 MA 1231 10-K 34 001-11859 05638633 101 MAIN ST CAMBRIDGE MA 02142-1590 6173749600 101 MAIN ST CAMBRIDGE MA 02142-1590 10-K 1 d10k.htm FORM 10-K EX-10.20 2 dex1020.htm OFFER LETTER BETWEEN THE REGISTRANT AND DOUGLAS I. KRA EX-10.21 3 dex1021.htm OFFER LETTER BETWEEN THE REGISTRANT AND MICHAEL J. WALLRICH EX-10.22 4 dex1022.htm AMENDMENT TO EXECUTIVE EMPLOYMENT AGREEMENT/HENRY ANCONA EX-23.1 5 dex231.htm CONSENT OF DELOITTE & TOUCHE LLP EX-31.1 6 dex311.htm CEO CERTIFICATION PURSUANT TO EXCHANGE ACT RULES 13A-14 & 15D-14 EX-31.2 7 dex312.htm CFO CERTIFICATION PURSUANT TO EXCHANGE ACT RULES 13A-14 & 15D-14 EX-32.1 8 dex321.htm CEO CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 EX-32.2 9 dex322.htm CFO CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350