Kenneth Duda - 18 May 2026 Form 4 Insider Report for Arista Networks, Inc. (ANET)

Reporting relationship: President and CTO, Director
Issuer ticker: ANET
Reported as of: 18 May 2026
Net transaction value: -$8,124,914
SEC form: 4
Accepted by SEC: 20 May 2026, 18:37:53 UTC
Prior SEC filing: 21 Apr 2026
Next SEC filing: 22 May 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 20 May 2026.

Key facts

This page summarizes Kenneth Duda's Form 4 filing for Arista Networks, Inc. (ANET).
17 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 20 May 2026, 18:37.

Change

Previous filing in this sequence was filed on 21 Apr 2026.
Current net transaction value: -$8,124,914.

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: 20 May 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: +32,000
Change %: +247%
Price: $15.26^*
Shares after: 44,976
Date: 18 May 2026
Ownership: Direct
Footnotes: F1

ANET transaction

Common Stock

Sale

Transaction value: $2,021,576
Shares: -14,501
Change %: -32%
Price: $139.41
Shares after: 30,475
Date: 18 May 2026
Ownership: Direct
Footnotes: F1, F2

ANET transaction

Common Stock

Sale

Transaction value: $1,738,344
Shares: -12,405
Change %: -41%
Price: $140.13
Shares after: 18,070
Date: 18 May 2026
Ownership: Direct
Footnotes: F1, F3

ANET transaction

Common Stock

Sale

Transaction value: $435,455
Shares: -3,081
Change %: -17%
Price: $141.34
Shares after: 14,989
Date: 18 May 2026
Ownership: Direct
Footnotes: F1, F4

ANET transaction

Common Stock

Sale

Transaction value: $156,996
Shares: -1,103
Change %: -7.4%
Price: $142.34
Shares after: 13,886
Date: 18 May 2026
Ownership: Direct
Footnotes: F1, F5

ANET transaction

Common Stock

Sale

Transaction value: $130,341
Shares: -910
Change %: -6.6%
Price: $143.23
Shares after: 12,976
Date: 18 May 2026
Ownership: Direct
Footnotes: F1, F6

ANET transaction

Common Stock

Sale

Transaction value: $1,010,858
Shares: -7,251
Change %: -0.67%
Price: $139.41
Shares after: 1,071,917
Date: 18 May 2026
Ownership: By Childrens' Trust
Footnotes: F2, F7, F8

ANET transaction

Common Stock

Sale

Transaction value: $869,102
Shares: -6,202
Change %: -0.58%
Price: $140.13
Shares after: 1,065,715
Date: 18 May 2026
Ownership: By Childrens' Trust
Footnotes: F3, F7, F8

ANET transaction

Common Stock

Sale

Transaction value: $217,657
Shares: -1,540
Change %: -0.14%
Price: $141.34
Shares after: 1,064,175
Date: 18 May 2026
Ownership: By Childrens' Trust
Footnotes: F4, F7, F8

ANET transaction

Common Stock

Sale

Transaction value: $78,569
Shares: -552
Change %: -0.05%
Price: $142.34
Shares after: 1,063,623
Date: 18 May 2026
Ownership: By Childrens' Trust
Footnotes: F5, F7, F8

ANET transaction

Common Stock

Sale

Transaction value: $65,171
Shares: -455
Change %: -0.04%
Price: $143.23
Shares after: 1,063,168
Date: 18 May 2026
Ownership: By Childrens' Trust
Footnotes: F6, F7, F8

ANET transaction

Common Stock

Sale

Transaction value: $631,803
Shares: -4,532
Change %: -0.92%
Price: $139.41
Shares after: 487,868
Date: 18 May 2026
Ownership: By Foundation
Footnotes: F2, F9, F10

ANET transaction

Common Stock

Sale

Transaction value: $543,154
Shares: -3,876
Change %: -0.79%
Price: $140.13
Shares after: 483,992
Date: 18 May 2026
Ownership: By Foundation
Footnotes: F3, F9, F10

ANET transaction

Common Stock

Sale

Transaction value: $136,106
Shares: -963
Change %: -0.2%
Price: $141.34
Shares after: 483,029
Date: 18 May 2026
Ownership: By Foundation
Footnotes: F4, F9, F10

ANET transaction

Common Stock

Sale

Transaction value: $49,106
Shares: -345
Change %: -0.07%
Price: $142.34
Shares after: 482,684
Date: 18 May 2026
Ownership: By Foundation
Footnotes: F5, F9, F10

ANET transaction

Common Stock

Sale

Transaction value: $40,678
Shares: -284
Change %: -0.06%
Price: $143.23
Shares after: 482,400
Date: 18 May 2026
Ownership: By Foundation
Footnotes: F6, F9, F10

ANET holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 702,147
Date: 18 May 2026
Ownership: By GRAT JD
Footnotes: F11

ANET holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 702,147
Date: 18 May 2026
Ownership: By GRAT KD
Footnotes: F12

ANET holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 201,134
Date: 18 May 2026
Ownership: by Trust
Footnotes: F13

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: -32,000
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 18 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 32,000
Exercise price: $15.26
Footnotes: F1, F14

^* 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 14 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 13, 2025.

Footnote F2

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $138.77 to $139.76, 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 $139.78 to $140.77, 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 $140.84 to $141.80, 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 price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $141.87 to $142.72, 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 F6

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $142.94 to $143.27, 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 F7

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 13, 2025.

Footnote F8

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 F9

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 13, 2025 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.

Footnote F10

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

Footnote F11

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

Footnote F12

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

Footnote F13

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

Footnote F14

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