EXHIBIT 99.1 Pega Cloud Soars in First Quarter 2019 • Pega Cloud ACV of $129 million, up 76% • Pega and Client Cloud ACV of $591 million, up 20% powered by Pega Cloud Choice™ • Pega Cloud revenue up 78% CAMBRIDGE, Mass. — May 7, 2019 — Pegasystems Inc. (NASDAQ: PEGA), the software company empowering digital transformation at the world's leading enterprises, released its financial results for the first quarter of 2019. "We're off to a solid start for 2019," said Alan Trefler, founder and CEO, Pegasystems. "W ...