Form 4: Arista Networks CTO Sells Shares After Option Exercise

Arista Networks President and CTO Kenneth Duda executed a Rule 10b5-1 plan, exercising options and selling a significant number of shares, both directly and through trusts, on September 17, 2025.

Summary

• Kenneth Duda, President and CTO of Arista Networks, Inc. (ANET), reported transactions on September 17, 2025, under a pre-arranged Rule 10b5-1 trading plan established on March 13, 2025.
• Duda exercised 30,000 Non-Qualified Stock Options at an exercise price of $3.515 per share.
• Following the option exercise, Duda directly sold a total of 29,900 shares of Common Stock at weighted average prices ranging from $139.1365 to $143.35.
• Additionally, shares held indirectly through a Childrens' Trust (for which Duda serves as co-trustee) sold a total of 15,900 shares at weighted average prices ranging from $139.1365 to $143.35.
• Shares held indirectly by a 501(c) Foundation (for which Duda and his spouse serve as co-trustee) sold a total of 9,905 shares at weighted average prices ranging from $139.1365 to $143.35.
• After these transactions, Duda directly beneficially owns 12,976 shares and indirectly owns 1,191,168 shares through the Childrens' Trust, 562,400 shares through the Foundation, 762,035 shares through GRAT JD, 762,035 shares through GRAT KD, and 9,303 shares through a family trust.
• Duda retains 120,000 Non-Qualified Stock Options, which vested monthly since April 1, 2017, and expire on February 11, 2026.

Sentiment

Score: 6

Explanation: The sentiment is neutral to slightly positive. While significant insider selling can sometimes be viewed negatively, these transactions were pre-planned under a Rule 10b5-1 plan, indicating a structured liquidity event rather than a reaction to adverse company news. The insider realized substantial profits from the option exercise and subsequent sales.

Positives

• The reporting person realized a significant profit by exercising stock options at a low price ($3.515) and selling the shares at substantially higher market prices (ranging from $139.1365 to $143.35).
• All transactions were conducted under a pre-established Rule 10b5-1 trading plan, indicating a planned liquidity event rather than a reaction to recent company performance.

Negatives

• The significant volume of insider selling, totaling 55,705 shares across direct and indirect holdings, could be perceived negatively by some investors, potentially signaling a lack of confidence, despite being part of a 10b5-1 plan.

Future Outlook

This filing does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This Form 4 filing details an insider's personal trading activity and does not provide information directly related to broader industry trends or competitive landscape for Arista Networks. Such transactions are common for executives managing their personal portfolios and liquidity.

Related Party Transactions

• Sales of shares were conducted through a Childrens' Trust and a 501(c) Foundation, for which the reporting person serves as co-trustee, indicating transactions involving related parties.

Stakeholder Impact

• Shareholders may note the significant insider selling, which, despite being pre-planned, could lead to questions about management's long-term confidence or simply be viewed as a diversification strategy.

Key Dates

Keywords

Arista Networks, ANET, Kenneth Duda, Insider Trading, Form 4, Stock Options, 10b5-1 Plan, Executive Compensation, Share Sale