Arista Networks President and CTO Kenneth Duda sold 6,567 shares on July 20, 2026 at $169.90 per share, a transaction valued at about $1.12 million. The sale was reported as being made under a pre-scheduled Rule 10b5-1 trading plan, which is a written plan that sets up trades in advance and is often used to reduce the appearance that an insider is trading based on nonpublic information. This trade matters because Duda is a top operating and technical leader at Arista, so his transactions tend to draw attention from investors looking for signals from management. However, the planned nature of a 10b5-1 sale generally makes it less informative about day-to-day confidence levels than an open-market sale decided in real time. Recent filings show two insider sales in the last 30 days: Duda’s $1.12 million sale and a larger $4.72 million sale by co-founder Andreas Bechtolsheim on July 14. With the activity limited to sales and no reported insider buys in that window, the pattern indicates some insiders have been reducing holdings, though the disclosed use of a trading plan for Duda suggests a routine, scheduled transaction rather than a discretionary move.