Arista Networks CEO and CTO Have Sold $2.9 Billion in ANET Stock Combined

Arista Networks (ANET) CEO Jayshree Ullal and CTO Kenneth Duda have sold a combined $2.9 billion in stock across 4,056 Form 4 filings. Both executives continue systematic selling as Arista rides the AI-driven data center networking boom that has propelled the stock from under $30 in 2019 to over $130 today.

Two Insiders, One Pattern

Insider	Role	Filings	Career Sells	Last Transaction
Jayshree Ullal	CEO & President	1,941	$2.20 billion	Feb 20, 2026
Kenneth Duda	CTO & SVP Software Eng	2,115	$748 million	Jan 20, 2026

Both have zero buy transactions on record. Every Form 4 filing involves either option exercises, RSU vesting, tax withholding, or open-market sales. The combined 4,056 filings — averaging roughly one per business day — paint a picture of steady, programmatic liquidation.

Ullal: $107 Million in a Single September Session

Ullal’s most notable recent sale came on September 10, 2025, when she sold approximately 716,000 shares across three lots at $147–$150 per share, generating roughly $106.7 million in a single day. This represents her largest single-day sale in recent quarters.

Her November 2025 activity was smaller: 24,042 shares sold at $123–$126 for approximately $3 million. In February 2026, she received new RSU vestings totaling over 300,000 shares, with $15.3 million withheld for taxes.

Duda: Exercise-and-Sell Cadence

Duda follows a classic exercise-and-sell pattern. On January 20, 2026, he exercised 30,000 options at $3.52 per share (a grant from Arista’s early years) and immediately sold 10,000 shares at $127–$130, netting approximately $1.3 million. His February 2026 filings show additional RSU vestings with $7.5 million in tax withholding.

With 2,115 total filings, Duda has actually filed more Form 4s than his CEO, despite selling roughly one-third the dollar value. This reflects his role-based compensation structure: more frequent, smaller RSU tranches versus Ullal’s larger option blocks.

The AI Networking Context

Arista dominates high-speed Ethernet switching for AI clusters — the same infrastructure that powers training runs at Meta, Microsoft, and major cloud providers. The stock has been a beneficiary of every AI spending announcement, which makes the steady insider selling noteworthy.

However, insider selling at tech companies riding secular trends is common and expected. Both Ullal and Duda appear to use 10b5-1 pre-arranged plans, evidenced by the clockwork regularity of their filings. The selling predates and continues through the AI rally rather than accelerating because of it.

What to Watch

• Ullal’s next sell window: After the $107M September block, her subsequent sells have been modest. A return to large blocks would be notable.
• Duda’s option grants: His $3.52 exercise price reflects early grants that are deep in-the-money. Watch for additional exercises as remaining tranches vest.
• AI capex guidance: Any slowdown in hyperscaler AI spending could pressure ANET — making the insider selling timeline relevant for investors tracking executive confidence.