Todd Nightingale - 20 Aug 2026 Form 4 Insider Report for Arista Networks, Inc. (ANET)

Reporting relationship: President and COO
Issuer ticker: ANET
Reported as of: 20 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 24 Aug 2026, 18:14:45 UTC
Prior SEC filing: 24 Feb 2026
Source filing: View source filing
Reporting owner signature: By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Todd Nightingale

Key filing fact

Todd Nightingale filed Form 4 for Arista Networks, Inc. (ANET) on 24 Aug 2026.

Key facts

This page summarizes Todd Nightingale's Form 4 filing for Arista Networks, Inc. (ANET).
6 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 24 Aug 2026, 18:14.

Change

Previous filing in this sequence was filed on 24 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001944844 Primary reporting owner

Nightingale Todd

Relationship: President and COO
Address: 5453 GREAT AMERICA PARKWAY, SANTA CLARA
Signature: By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Todd Nightingale
Signature date: 24 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ANET transaction

Common Stock

Options Exercise

Transaction value
Shares: +116,515
Change %: +1901%
Price: $0.000000^*
Shares after: 122,643
Date: 20 Aug 2026
Ownership: Direct
Footnotes: F1

ANET transaction

Common Stock

Options Exercise

Transaction value
Shares: +10,360
Change %: +8.4%
Price: $0.000000^*
Shares after: 133,003
Date: 20 Aug 2026
Ownership: Direct
Footnotes: F1

ANET transaction

Common Stock

Tax liability

Transaction value
Shares: -63,540
Change %: -48%
Price: $186.45^*
Shares after: 69,463
Date: 20 Aug 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ANET transaction Derivative

Restricted Stock Unit-1

Options Exercise

Transaction value
Shares: -116,515
Change %: -25%
Price: $0.000000^*
Shares after: 349,545
Date: 20 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 116,515
Exercise price: $0.000000
Footnotes: F1, F3

ANET transaction Derivative

Restricted Stock Unit-3

Award

Transaction value
Shares: +10,360
Change %
Price: $0.000000^*
Shares after: 10,360
Date: 20 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 10,360
Exercise price: $0.000000
Footnotes: F1, F4

ANET transaction Derivative

Restricted Stock Unit-3

Options Exercise

Transaction value
Shares: -10,360
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 20 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 10,360
Exercise price: $0.000000
Footnotes: F1, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

Footnote F2

Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units.

Footnote F3

Twenty five percent (25%) of the restricted stock units awarded will vest on August 20, 2026 and will continue to vest at a rate of six and one-quarter percent (6.25%) each quarter on each quarterly vest date thereafter. A quarterly vest date is the first market trading day on or after February 20, May 20, August 20 or November 20 of each year.

Footnote F4

This performance stock award was granted in the second quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.