Arista Networks CTO Kenneth Duda's Stock Transactions Under Rule 10b5-1 Plans

This Form 4 filing reports significant stock transactions by Kenneth Duda, President and CTO of Arista Networks, on June 22, 2026. Duda exercised options to acquire 17,333 shares at $15.2769 per share while simultaneously selling 17,333 shares across multiple price ranges from $166.83 to $175.04. The transactions were executed pursuant to Rule 10b5-1 trading plans established on March 11, 2026. Additionally, shares held in trusts for Duda's children and a 501(c) foundation were sold, with the children's trust selling 14,380 shares and the foundation selling 9,200 shares. Following these transactions, Duda directly holds 12,976 shares and maintains indirect ownership through GRAT trusts (757,755 shares and 756,272 shares respectively). All sales were conducted through pre-arranged trading plans to avoid insider trading concerns.