Ita M. Brennan - May 20, 2021 Form 4 Insider Report for Arista Networks, Inc. (ANET)

Role: Senior Vice President, CFO
Signature: By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Ita Brennan
Stock symbol: ANET
Transactions as of: May 20, 2021
Transactions value $: -$342,313
Form type: 4
Date filed: 5/24/2021, 09:11 PM
Next filing: Jun 3, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ANET	Common Stock	Options Exercise	$0	+600	+14.59%	$0.00	4.71K	May 20, 2021	Direct	F1
transaction	ANET	Common Stock	Options Exercise	$0	+313	+6.64%	$0.00	5.02K	May 20, 2021	Direct	F1
transaction	ANET	Common Stock	Options Exercise	$0	+218	+4.34%	$0.00	5.24K	May 20, 2021	Direct	F1
transaction	ANET	Common Stock	Options Exercise	$0	+391	+7.46%	$0.00	5.63K	May 20, 2021	Direct	F1
transaction	ANET	Common Stock	Options Exercise	$0	+909	+16.14%	$0.00	6.54K	May 20, 2021	Direct	F1
transaction	ANET	Common Stock	Tax liability	-$342K	-1.02K	-15.58%	$335.93	5.52K	May 20, 2021	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ANET	Restricted Stock Unit-3	Options Exercise	$0	-600	-14.29%	$0.00	3.6K	May 20, 2021	Common Stock	600	$0.00	Direct	F1, F3
transaction	ANET	Restricted Stock Unit-4	Options Exercise	$0	-313	-12.52%	$0.00	2.19K	May 20, 2021	Common Stock	313	$0.00	Direct	F1, F4
transaction	ANET	Restricted Stock Unit-5	Options Exercise	$0	-218	-7.12%	$0.00	2.84K	May 20, 2021	Common Stock	218	$0.00	Direct	F1, F5
transaction	ANET	Restricted Stock Unit-6	Options Exercise	$0	-391	-7.15%	$0.00	5.08K	May 20, 2021	Common Stock	391	$0.00	Direct	F1, F6
transaction	ANET	Restricted Stock Unit-7	Options Exercise	$0	-909	-6.25%	$0.00	13.6K	May 20, 2021	Common Stock	909	$0.00	Direct	F1, F7

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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, or 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 14,540 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.