X0306 4 2016-09-16 0 0001013857 PEGASYSTEMS INC PEGA 0001222574 JONES RICHARD H C/O PEGASYSTEMS INC. 1 ROGERS STREET CAMBRIDGE MA 02142 1 0 0 0 9/16/2016 2016-09-16 4 S 0 1333 28.00 D 66343 I Jones Family Foundation 9/16/2016 2016-09-16 4 S 0 2667 28.00 D 616926 D Sold pursuant to a pre-arranged stock trading plan under rule 10b5-1 of the Securities Exchange Act of 1934, as amended. Represents the weighted average of the sale prices on September 16, 2016, ranging from $28.00 to $28.01. Shares owned by the Jones Family Foundation, as which Mr. Jones has no pecuniary interest. /s/ Janet Mesrobian, Esq., Attorney-In-Fact for Richard Jones 2016-09-19