Kenneth Duda - 20 Jul 2026 Form 4 Insider Report for Arista Networks, Inc. (ANET)

Reporting relationship: President and CTO, Director
Issuer ticker: ANET
Reported as of: 20 Jul 2026
Net transaction value: -$7,388,872
SEC form: 4
Accepted by SEC: 22 Jul 2026, 18:56:13 UTC
Prior SEC filing: 24 Jun 2026
Source filing: View source filing
Reporting owner signature: By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda

Key filing fact

Kenneth Duda filed Form 4 for Arista Networks, Inc. (ANET) on 22 Jul 2026.

Key facts

This page summarizes Kenneth Duda's Form 4 filing for Arista Networks, Inc. (ANET).
14 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 22 Jul 2026, 18:56.

Change

Previous filing in this sequence was filed on 24 Jun 2026.
Current net transaction value: -$7,388,872.

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 0001605808 Primary reporting owner

Duda Kenneth

Relationship: President and CTO, Director
Address: 5453 GREAT AMERICA PARKWAY, SANTA CLARA
Signature: By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda
Signature date: 22 Jul 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: +17,333
Change %: +134%
Price: $15.28^*
Shares after: 30,309
Date: 20 Jul 2026
Ownership: Direct
Footnotes: F1

ANET transaction

Common Stock

Sale

Transaction value: $1,115,718
Shares: -6,567
Change %: -22%
Price: $169.90
Shares after: 23,742
Date: 20 Jul 2026
Ownership: Direct
Footnotes: F1, F2

ANET transaction

Common Stock

Sale

Transaction value: $1,541,321
Shares: -9,028
Change %: -38%
Price: $170.73
Shares after: 14,714
Date: 20 Jul 2026
Ownership: Direct
Footnotes: F1, F3

ANET transaction

Common Stock

Sale

Transaction value: $291,580
Shares: -1,698
Change %: -12%
Price: $171.72
Shares after: 13,016
Date: 20 Jul 2026
Ownership: Direct
Footnotes: F1, F4

ANET transaction

Common Stock

Sale

Transaction value: $6,896
Shares: -40
Change %: -0.31%
Price: $172.40
Shares after: 12,976
Date: 20 Jul 2026
Ownership: Direct
Footnotes: F1

ANET transaction

Common Stock

Sale

Transaction value: $1,029,920
Shares: -6,062
Change %: -0.58%
Price: $169.90
Shares after: 1,041,106
Date: 20 Jul 2026
Ownership: By Childrens' Trust
Footnotes: F2, F5, F6

ANET transaction

Common Stock

Sale

Transaction value: $1,422,836
Shares: -8,334
Change %: -0.8%
Price: $170.73
Shares after: 1,032,772
Date: 20 Jul 2026
Ownership: By Childrens' Trust
Footnotes: F3, F5, F6

ANET transaction

Common Stock

Sale

Transaction value: $269,085
Shares: -1,567
Change %: -0.15%
Price: $171.72
Shares after: 1,031,205
Date: 20 Jul 2026
Ownership: By Childrens' Trust
Footnotes: F4, F5, F6

ANET transaction

Common Stock

Sale

Transaction value: $6,379
Shares: -37
Change %: -0%
Price: $172.40
Shares after: 1,031,168
Date: 20 Jul 2026
Ownership: By Childrens' Trust
Footnotes: F5, F6

ANET transaction

Common Stock

Sale

Transaction value: $643,742
Shares: -3,789
Change %: -0.8%
Price: $169.90
Shares after: 468,611
Date: 20 Jul 2026
Ownership: By Foundation
Footnotes: F2, F7, F8

ANET transaction

Common Stock

Sale

Transaction value: $889,315
Shares: -5,209
Change %: -1.1%
Price: $170.73
Shares after: 463,402
Date: 20 Jul 2026
Ownership: By Foundation
Footnotes: F3, F7, F8

ANET transaction

Common Stock

Sale

Transaction value: $168,114
Shares: -979
Change %: -0.21%
Price: $171.72
Shares after: 462,423
Date: 20 Jul 2026
Ownership: By Foundation
Footnotes: F4, F7, F8

ANET transaction

Common Stock

Sale

Transaction value: $3,965
Shares: -23
Change %: -0%
Price: $172.40
Shares after: 462,400
Date: 20 Jul 2026
Ownership: By Foundation
Footnotes: F7, F8

ANET holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 757,755
Date: 20 Jul 2026
Ownership: By GRAT JD
Footnotes: F9

ANET holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 756,272
Date: 20 Jul 2026
Ownership: By GRAT KD
Footnotes: F10

ANET holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 106,890
Date: 20 Jul 2026
Ownership: by Trust
Footnotes: F11

Reported derivative securities

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

ANET transaction Derivative

Non-Qualified Stock Option (right to buy)

Options Exercise

Transaction value
Shares: -17,333
Change %: -57%
Price: $0.000000^*
Shares after: 13,334
Date: 20 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 17,333
Exercise price: $15.28
Footnotes: F1, F12

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 12 footnotes

Footnote F1

The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 11, 2026.

Footnote F2

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $169.28 to $170.27, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F3

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.28 to $171.21, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F4

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.33 to $172.31, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Footnote F5

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 11, 2026.

Footnote F6

These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.

Footnote F7

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.

Footnote F8

These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Footnote F9

Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.

Footnote F10

Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

Footnote F11

These shares are held by a family trust for which the reporting person is co-trustee.

Footnote F12

1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.