Arista Networks, Inc. — Director's Dealing 2021

May 24, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Arista Networks, Inc. (ANET)
CIK: 0001596532
Period of Report: 2021-05-20

Reporting Person: Taxay Marc (SVP and General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-20	Common Stock	M	600	$0.0	Acquired	600	Direct
2021-05-20	Common Stock	M	313	$0.0	Acquired	913	Direct
2021-05-20	Common Stock	M	218	$0.0	Acquired	1131	Direct
2021-05-20	Common Stock	M	391	$0.0	Acquired	1522	Direct
2021-05-20	Common Stock	M	636	$0.0	Acquired	2158	Direct
2021-05-20	Common Stock	F	1073	$335.93	Disposed	1085	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-20	Restricted Stock Unit-4	$0.0	M	600	Disposed		Common Stock (600)	Direct
2021-05-20	Restricted Stock Unit-5	$0.0	M	313	Disposed		Common Stock (313)	Direct
2021-05-20	Restricted Stock Unit-6	$0.0	M	218	Disposed		Common Stock (218)	Direct
2021-05-20	Restricted Stock Unit-7	$0.0	M	391	Disposed		Common Stock (391)	Direct
2021-05-20	Restricted Stock Unit-8	$0.0	M	636	Disposed		Common Stock (636)	Direct

Footnotes

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: Five percent (5%) of the 12,000 restricted stock units awarded vested on February 20, 2018 and five percent (5%) of the award will continue to vest 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 5,000 restricted stock units awarded vested on May 20, 2019 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: Six and one-quarter percent (6.25%) of the 3,500 restricted stock units awarded vested on November 20, 2020 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.

F6: Six and one-quarter percent (6.25%) of the 6,250 restricted stock units awarded vested on November 20, 2020 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.

F7: Six and one-quarter percent (6.25%) of the 10,180 restricted stock units awarded vested on May 20, 2021 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.