Exhibit 99.1 Robyn Blum Sami Badri Cisco Cisco 1 (408) 930-8548 1 (469) 420-4834 Press Contact: Investor Relations Contact: rojenkin@cisco.com sambadri@cisco.com CISCO REPORTS FIRST QUARTER EARNINGS News Summary: • Q1 FY 2026 Results: (1) Margin and EPS guidance includes the estimated impact of tariffs based on current trade policy. SAN JOSE, Calif. — November 12, 2025 — Cisco today reported first quarter results for the period ended October 25, 2025. Cisco reported first quarter revenue of $14.9 billion, n ...