Exhibit 99.1 Appian Announces Second Quarter 2025 Financial Results Second quarter cloud subscriptions revenue increased 21% year-over-year to $106.9 million Second quarter total revenue increased 17$170.6 million McLean, VA – August 7, 2025 – Appian (Nasdaq: APPN) today announced financial results for the second quarter ended June 30, 2025. "Appian AI drove strong financial results in the second quarter of 2025, with higher prices and a larger pipeline," said Matt Calkins, CEO & Founder ...