Exhibit 99.1 Arista Networks, Inc. Reports First Quarter 2024 Financial Results Board of Directors Authorizes Additional $1.2B Stock Repurchase Program SANTA CLARA, Calif.- May 7, 2024 -- Arista Networks, Inc. (NYSE: ANET), an industry leader in data-driven, client to cloud networking for large data center/AI, campus and routing environments, today announced financial results for its first quarter ended March 31, 2024. First Quarter Financial Highlights “Arista is off to a strong start to 2024 with solid fi ...