144 0001707744 XXXXXXXX LIVE 0001596532 Arista Networks, Inc. 001-36468 5453 Great America Parkway Santa Clara CA 95054 408-547-5500 Yvonne Wassenaar Director Common J.P. Morgan Securities LLC

270 Park Avenue - 10th Floor New York NY 10017

4605 611452 1256537906 02/25/2026 NYSE Common 02/20/2026 Restricted Stock Award Issuer N 971 02/20/2026 NA Common 02/20/2025 Restricted Stock Award Issuer N 844 02/20/2025 NA Common 08/20/2025 Restricted Stock Award Issuer N 971 08/20/2025 NA Common 11/20/2024 Restricted Stock Award Issuer N 424 11/20/2024 NA Common 11/20/2025 Restricted Stock Award Issuer N 971 11/20/2025 NA Common 11/20/2024 Restricted Stock Award Issuer N 424 11/20/2024 NA Y 02/25/2026 11/21/2025 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Yvonne Wassenaar