Breithaupt Chantelle Yvette 4

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

Form 4

Period: 2026-02-20

Senior Vice President, CFO

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-02-20+10,920→ 58,315 total
Exercise/Conversion
Common Stock
[F1]
2026-02-20+15,864→ 74,179 total
Exercise/Conversion
Common Stock
[F1]
2026-02-20+1,350→ 75,529 total
Exercise/Conversion
Common Stock
[F1]
2026-02-20+14,400→ 89,929 total
Tax Payment
Common Stock
[F2]
2026-02-20$137.23/sh−20,305$2,786,455→ 69,624 total
Exercise/Conversion
Restricted Stock Unit-1
[F1][F3]
2026-02-20−10,920→ 87,340 total
Exercise: $0.00→ Common Stock (10,920 underlying)
Exercise/Conversion
Restricted Stock Unit-2
[F1][F4]
2026-02-20−1,350→ 20,250 total
Exercise: $0.00→ Common Stock (1,350 underlying)
Award
Restricted Stock Unit-3
[F1][F5]
2026-02-20+15,864→ 15,864 total
Exercise: $0.00→ Common Stock (15,864 underlying)
Exercise/Conversion
Restricted Stock Unit-3
[F1][F5]
2026-02-20−15,864→ 0 total
Exercise: $0.00→ Common Stock (15,864 underlying)
Award
Restricted Stock Unit-7
[F1][F6]
2026-02-20+14,400→ 14,400 total
Exercise: $0.00→ Common Stock (14,400 underlying)
Exercise/Conversion
Restricted Stock Unit-7
[F1][F6]
2026-02-20−14,400→ 0 total
Exercise: $0.00→ Common Stock (14,400 underlying)

Footnotes (6)

[F1]Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.
[F2]Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units.
[F3]Twenty five percent (25%) of the restricted stock units awarded vested on Feb 20, 2025 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.
[F4]Six and one-quarter percent (6.25%) of the restricted stock units awarded vest 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.
[F5]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.
[F6]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: Chantelle Breithaupt|2026-02-24

Documents

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