Duda Kenneth 4

4 · Arista Networks, Inc. · Filed Feb 24, 2026

Insider Transaction Report

Form 4

Period: 2026-02-20

Arista Networks, Inc.ANET

Duda Kenneth

DirectorPresident and CTO

Transactions

Exercise/Conversion
Common Stock
[F1][F2]
2026-02-20+3,880→ 38,963 total(indirect: By Trust)
Exercise/Conversion
Common Stock
[F1][F2]
2026-02-20+4,148→ 43,111 total(indirect: By Trust)
Exercise/Conversion
Common Stock
[F1][F2]
2026-02-20+44,240→ 87,351 total(indirect: By Trust)
Exercise/Conversion
Common Stock
[F1][F2]
2026-02-20+1,836→ 89,187 total(indirect: By Trust)
Exercise/Conversion
Common Stock
[F1][F2]
2026-02-20+19,816→ 109,003 total(indirect: By Trust)
Exercise/Conversion
Common Stock
[F1][F2]
2026-02-20+1,350→ 110,353 total(indirect: By Trust)
Exercise/Conversion
Common Stock
[F1][F2]
2026-02-20+14,400→ 124,753 total(indirect: By Trust)
Exercise/Conversion
Common Stock
[F1][F2]
2026-02-20+19,576→ 144,329 total(indirect: By Trust)
Tax Payment
Common Stock
[F3][F2]
2026-02-20$137.23/sh−54,823$7,523,360→ 89,506 total(indirect: By Trust)
Exercise/Conversion
Restricted Stock Unit - 17
[F1][F8]
2026-02-20−1,350→ 20,250 total
Exercise: $0.00→ Common Stock (1,350 underlying)
Award
Restricted Stock Unit - 18
[F1][F9]
2026-02-20+19,576→ 19,576 total
Exercise: $0.00→ Common Stock (19,576 underlying)
Exercise/Conversion
Restricted Stock Unit - 18
[F1][F9]
2026-02-20−19,576→ 0 total
Exercise: $0.00→ Common Stock (19,576 underlying)
Award
Restricted Stock Unit - 19
[F1][F10]
2026-02-20+14,400→ 14,400 total
Exercise: $0.00→ Common Stock (14,400 underlying)
Exercise/Conversion
Restricted Stock Unit - 19
[F1][F10]
2026-02-20−14,400→ 0 total
Exercise: $0.00→ Common Stock (14,400 underlying)
Exercise/Conversion
Restricted Stock Unit-11
[F1][F11]
2026-02-20−4,148→ 29,032 total
Exercise: $0.00→ Common Stock (4,148 underlying)
Exercise/Conversion
Restricted Stock Unit-13
[F1][F12]
2026-02-20−1,836→ 20,184 total
Exercise: $0.00→ Common Stock (1,836 underlying)
Exercise/Conversion
Restricted Stock Unit-14
[F1][F13]
2026-02-20−19,816→ 356,688 total
Exercise: $0.00→ Common Stock (19,816 underlying)
Award
Restricted Stock Unit-16
[F1][F14]
2026-02-20+44,240→ 44,240 total
Exercise: $0.00→ Common Stock (44,240 underlying)
Exercise/Conversion
Restricted Stock Unit-16
[F1][F14]
2026-02-20−44,240→ 0 total
Exercise: $0.00→ Common Stock (44,240 underlying)
Exercise/Conversion
Restricted Stock Unit-8
[F1][F15]
2026-02-20−3,880→ 11,648 total
Exercise: $0.00→ Common Stock (3,880 underlying)

Holdings

Common Stock
12,976
Common Stock
[F4]
(indirect: By Trust)
1,111,168
Common Stock
[F5]
(indirect: By Foundation)
512,400
Common Stock
[F6]
(indirect: By GRAT JD)
757,961
Common Stock
[F7]
(indirect: By GRAT KD)
757,961

Footnotes (15)

[F1]Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.
[F10]This performance stock award was granted in the first quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.
[F11]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.
[F12]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.
[F13]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.
[F14]This performance stock award was granted in the first quarter of 2023 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.
[F15]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.
[F2]These shares are held by a family trust for which the reporting person is co-trustee.
[F3]Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units.
[F4]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.
[F5]These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.
[F6]Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.
[F7]Reporting person is the trustee of the Kenneth Duda Annuity Trusts.
[F8]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.
[F9]This performance stock award was granted in the first quarter of 2024 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

Signature

By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda|2026-02-24

Documents

1 file

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edgardoc.xmlPrimary
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