Exhibit 99.1 Arista Networks, Inc. Reports Third Quarter 2025 Financial Results SANTA CLARA, Calif.- November 4, 2025 -- Arista Networks, Inc. (NYSE: ANET), an industry leader in data-driven, client-to-cloud networking for large AI, data center, campus, and routing environments, today announced financial results for its third quarter ended September 30, 2025. Third Quarter Financial Highlights "Our centers of data strategy is resonating well across customers and analysts because it delivers a superior clien ...