X0306 4/A 2019-03-28 2019-04-01 0 0001013857 PEGASYSTEMS INC PEGA 0001222574 JONES RICHARD H C/O PEGASYSTEMS INC. 1 ROGERS STREET CAMBRIDGE MA 02142 1 0 0 0 Common Stock 189010 I Patricia Jones Revocable Trust This Form 4/A amends the Form 4 filed April 1, 2019 (and subsequent Forms 4) by deleting the third line of Table I, which inadvertently duplicated previously reported shares beneficially owned by the Patricia Jones Revocable Trust. This line item is being restated solely for the purpose of gaining access to the SEC's EDGAR filing system and does not reflect any changes to the line item originally reported. /s/ Janet Mesrobian, Esq., Attorney-in-Fact for Richard Jones 2019-08-14