Arista Networks, Inc. 4

President and CTO Kenneth Duda exercised 17,333 options and sold approximately 47,332 shares of Arista Networks common stock (directly and via trusts/foundation) under Rule 10b5-1 trading plans.

On July 20, 2026, Arista Networks President and CTO Kenneth Duda exercised 17,333 non-qualified stock options at $15.2769 per share, acquiring the same number of Arista Networks, Inc. common shares, and then engaged in a series of pre-planned sales under Rule 10b5-1. He sold 17,332 shares from his direct holdings at weighted-average prices between about $169.90 and $172.40, generating roughly $3.0 million in proceeds and leaving him with 13,334 directly held shares. In addition, affiliated entities for which he serves as trustee or co-trustee sold 20,000 shares via children’s trusts (about $3.42 million) and 10,000 shares via a 501(c) foundation (about $1.71 million), all at similar price ranges and pursuant to separate Rule 10b5-1 plans, while large indirect positions remain in multiple GRATs and a family trust. Based on the current market price, Duda’s remaining reported holdings (direct and indirect) are worth on the order of $430 million, indicating these transactions represent a small, programmatic portion of his overall economic exposure.

Filing Facts

CIK

1596532

Ticker

ANET

Form

4

Source Type

sec

Accession

0001596532-26-000166

Alert Tier

6