Key facts
- This page summarizes Kenneth Duda's Form 4 filing for Arista Networks, Inc. (ANET).
- 28 reported transactions and 8 derivative rows are listed below.
- Accepted by SEC: 24 Aug 2026, 18:14.
Kenneth Duda - 20 Aug 2026 Form 4 Insider Report for Arista Networks, Inc. (ANET)
- Reporting relationship
- President and CTO, Director
- Issuer ticker
- ANET
- Reported as of
- 20 Aug 2026
- Net transaction value
- -$8,034,699
- SEC form
- 4
- Accepted by SEC
- 24 Aug 2026, 18:14:36 UTC
- Prior SEC filing
- 22 Jul 2026
- Next SEC filing
- 01 Sep 2026
- Source filing
- View source filing
- Reporting owner signature
- By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Kenneth Duda filed Form 4 for Arista Networks, Inc. (ANET) on 24 Aug 2026.
Change
- Previous filing in this sequence was filed on 22 Jul 2026.
- Current net transaction value: -$8,034,699.
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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
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
- 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
- +13,334
- Change %
- +103%
- Price
- $15.28*
- Shares after
- 26,310
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
ANET
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +3,999
- Change %
- +15%
- Price
- $14.15*
- Shares after
- 30,309
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
ANET
transaction
Common Stock
Sale
- Transaction value
- $773,632
- Shares
- -4,197
- Change %
- -14%
- Price
- $184.33
- Shares after
- 26,112
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F2
ANET
transaction
Common Stock
Sale
- Transaction value
- $1,064,797
- Shares
- -5,750
- Change %
- -22%
- Price
- $185.18
- Shares after
- 20,362
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F3
ANET
transaction
Common Stock
Sale
- Transaction value
- $1,222,474
- Shares
- -6,568
- Change %
- -32%
- Price
- $186.13
- Shares after
- 13,794
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F4
ANET
transaction
Common Stock
Sale
- Transaction value
- $152,941
- Shares
- -818
- Change %
- -5.9%
- Price
- $186.97
- Shares after
- 12,976
- Date
- 20 Aug 2026
- Ownership
- Direct
- Footnotes
- F1, F5
ANET
transaction
Common Stock
Sale
- Transaction value
- $714,278
- Shares
- -3,875
- Change %
- -0.38%
- Price
- $184.33
- Shares after
- 1,027,293
- Date
- 20 Aug 2026
- Ownership
- By Childrens' Trust
- Footnotes
- F2, F6, F7
ANET
transaction
Common Stock
Sale
- Transaction value
- $982,947
- Shares
- -5,308
- Change %
- -0.52%
- Price
- $185.18
- Shares after
- 1,021,985
- Date
- 20 Aug 2026
- Ownership
- By Childrens' Trust
- Footnotes
- F3, F6, F7
ANET
transaction
Common Stock
Sale
- Transaction value
- $1,128,480
- Shares
- -6,063
- Change %
- -0.59%
- Price
- $186.13
- Shares after
- 1,015,922
- Date
- 20 Aug 2026
- Ownership
- By Childrens' Trust
- Footnotes
- F4, F6, F7
ANET
transaction
Common Stock
Sale
- Transaction value
- $140,975
- Shares
- -754
- Change %
- -0.07%
- Price
- $186.97
- Shares after
- 1,015,168
- Date
- 20 Aug 2026
- Ownership
- By Childrens' Trust
- Footnotes
- F5, F6, F7
ANET
transaction
Common Stock
Sale
- Transaction value
- $446,447
- Shares
- -2,422
- Change %
- -0.52%
- Price
- $184.33
- Shares after
- 459,978
- Date
- 20 Aug 2026
- Ownership
- By Foundation
- Footnotes
- F2, F8, F9
ANET
transaction
Common Stock
Sale
- Transaction value
- $614,249
- Shares
- -3,317
- Change %
- -0.72%
- Price
- $185.18
- Shares after
- 456,661
- Date
- 20 Aug 2026
- Ownership
- By Foundation
- Footnotes
- F3, F8, F9
ANET
transaction
Common Stock
Sale
- Transaction value
- $705,230
- Shares
- -3,789
- Change %
- -0.83%
- Price
- $186.13
- Shares after
- 452,872
- Date
- 20 Aug 2026
- Ownership
- By Foundation
- Footnotes
- F4, F8, F9
ANET
transaction
Common Stock
Sale
- Transaction value
- $88,250
- Shares
- -472
- Change %
- -0.1%
- Price
- $186.97
- Shares after
- 452,400
- Date
- 20 Aug 2026
- Ownership
- By Foundation
- Footnotes
- F5, F8, F9
ANET
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +3,880
- Change %
- +3.6%
- Price
- $0.000000*
- Shares after
- 110,770
- Date
- 20 Aug 2026
- Ownership
- by Trust
- Footnotes
- F10, F11
ANET
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +4,148
- Change %
- +3.7%
- Price
- $0.000000*
- Shares after
- 114,918
- Date
- 20 Aug 2026
- Ownership
- by Trust
- Footnotes
- F10, F11
ANET
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +1,832
- Change %
- +1.6%
- Price
- $0.000000*
- Shares after
- 116,750
- Date
- 20 Aug 2026
- Ownership
- by Trust
- Footnotes
- F10, F11
ANET
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +19,816
- Change %
- +17%
- Price
- $0.000000*
- Shares after
- 136,566
- Date
- 20 Aug 2026
- Ownership
- by Trust
- Footnotes
- F10, F11
ANET
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +1,350
- Change %
- +0.99%
- Price
- $0.000000*
- Shares after
- 137,916
- Date
- 20 Aug 2026
- Ownership
- by Trust
- Footnotes
- F10, F11
ANET
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -15,541
- Change %
- -11%
- Price
- $186.45*
- Shares after
- 122,375
- Date
- 20 Aug 2026
- Ownership
- by Trust
- Footnotes
- F11, F12
ANET
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 757,755
- Date
- 20 Aug 2026
- Ownership
- By GRAT JD
- Footnotes
- F13
ANET
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 756,272
- Date
- 20 Aug 2026
- Ownership
- By GRAT KD
- Footnotes
- F14
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
- -3,999
- Change %
- -2.5%
- Price
- $0.000000*
- Shares after
- 156,001
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 3,999
- Exercise price
- $14.15
- Footnotes
- F1, F15
ANET
transaction
Derivative
Non-Qualified Stock Option (right to buy)
Options Exercise
- Transaction value
- Shares
- -13,334
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 13,334
- Exercise price
- $15.28
- Footnotes
- F1, F16
ANET
transaction
Derivative
Restricted Stock Unit - 17
Options Exercise
- Transaction value
- Shares
- -1,350
- Change %
- -7.1%
- Price
- $0.000000*
- Shares after
- 17,550
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 1,350
- Exercise price
- $0.000000
- Footnotes
- F10, F17
ANET
transaction
Derivative
Restricted Stock Unit-11
Options Exercise
- Transaction value
- Shares
- -4,148
- Change %
- -17%
- Price
- $0.000000*
- Shares after
- 20,736
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 4,148
- Exercise price
- $0.000000
- Footnotes
- F10, F18
ANET
transaction
Derivative
Restricted Stock Unit-11
Options Exercise
- Transaction value
- Shares
- -4,148
- Change %
- -20%
- Price
- $0.000000*
- Shares after
- 16,588
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 4,148
- Exercise price
- $0.000000
- Footnotes
- F10, F18
ANET
transaction
Derivative
Restricted Stock Unit-13
Options Exercise
- Transaction value
- Shares
- -1,832
- Change %
- -10%
- Price
- $0.000000*
- Shares after
- 16,516
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 1,832
- Exercise price
- $0.000000
- Footnotes
- F10, F19
ANET
transaction
Derivative
Restricted Stock Unit-14
Options Exercise
- Transaction value
- Shares
- -19,816
- Change %
- -5.9%
- Price
- $0.000000*
- Shares after
- 317,056
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 19,816
- Exercise price
- $0.000000
- Footnotes
- F10, F20
ANET
transaction
Derivative
Restricted Stock Unit-8
Options Exercise
- Transaction value
- Shares
- -3,880
- Change %
- -50%
- Price
- $0.000000*
- Shares after
- 3,884
- Date
- 20 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 3,880
- Exercise price
- $0.000000
- Footnotes
- F10, F21
* 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 21 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 $183.72 to $184.7176, 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 $184.72 to $185.719, 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 $185.7311 to $186.7213, 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 $186.7331 to $187.16, 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 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 F7
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 F8
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 F9
These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.
Footnote F10
Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.
Footnote F11
These shares are held by a family trust for which the reporting person is co-trustee.
Footnote F12
Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units.
Footnote F13
Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.
Footnote F14
Reporting person is the trustee of the Kenneth Duda Annuity Trusts.
Footnote F15
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.
Footnote F16
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.
Footnote F17
Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 20, 2026 and will continue to vest at the same rate 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, and November 20 of each year.
Footnote F18
Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on on February 20, 2024 and will continue to vest at the same rate 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, and November 20 of each year.
Footnote F19
Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 20, 2025 and will continue to vest at the same rate 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, and November 20 of each year.
Footnote F20
Five percent (5%) of the restricted stock awarded vested on November 20, 2025 and will continue to vest at the same rate 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, and November 20 of each year.
Footnote F21
Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 20, 2023 and will continue to vest at the same rate 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, and November 20 of each year.