Exhibit 99.1 Palo Alto Networks Reports Fiscal First Quarter 2026 Financial Results SANTA CLARA, Calif., Nov. 19, 2025 — Palo Alto Networks (NASDAQ: PANW), the global cybersecurity leader, announced today financial results for its fiscal first quarter 2026, ended October 31, 2025. Total revenue for the fiscal first quarter 2026 grew 16% year over year to $2.5 billion, compared with total revenue of$2.1 billion for the fiscal first quarter 2025. GAAP net income for the fiscal first quarter 2026 was $334 mil ...