Arista Networks Officer Kenneth Duda Files Form 144 to Sell $9.5M in Common Stock

Arista Networks, Inc. (ANET) Form 144 Filing Analysis

Overview

On October 20, 2026, Kenneth Duda, an Officer at Arista Networks, Inc., filed Form 144 with the SEC indicating a proposed sale of 51,999 shares of Common Stock with an estimated aggregate market value of $9,513,217 (representing an average implied price of approximately $182.95 per share).

Transaction Details

• Securities Class: Common Stock
• Number of Units to be Sold: 51,999 shares
• Aggregate Market Value: $9,513,217
• Acquisition Context: The shares are to be acquired via a cashless stock option exercise from the issuer on October 20, 2026.
• Broker: J.P. Morgan Securities LLC
• Trading Plan: Sales are executed pursuant to a Rule 10b5-1 trading plan adopted on March 11, 2026.

Recent Activity (Past 3 Months)

The insider and affiliated trusts/foundations have conducted regular periodic sales:

• Kenneth Duda: Sold 17,333 shares on August 20, 2026 ($3,213,861) and 17,333 shares on September 21, 2026 ($3,527,236).
• Molly Hsu-Mei Duda 2017 Trust: Sold 8,000 shares on August 20, 2026 ($1,483,349) and 8,000 shares on September 21, 2026 ($1,627,986).
• Sophie Hsu-Tsen Duda 2017 Trust: Sold 8,000 shares on August 20, 2026 ($1,483,349) and 8,000 shares on September 21, 2026 ($1,627,986).
• Foundation for Truth, Justice, and Compassion: Sold 10,000 shares on August 20, 2026 ($1,854,186) and 10,000 shares on September 21, 2026 ($2,034,983).

Market & Trading Significance

• Impact: Medium.
• Although the proposed sale involves a significant dollar amount ($9.51M), it represents a tiny fraction (less than 0.01%) of Arista Networks' total outstanding shares (1,261,224,648 shares).
• Because the liquidation is tied to cashless stock option exercises established under a pre-scheduled Rule 10b5-1 trading plan adopted months prior, it reflects routine executive equity compensation monetization rather than a discretionary market-timing decision.