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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1596532	Arista Networks Inc.	ANET	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1244892	Ann Mather	5453 Great America Parkway Santa Clara CA 95054		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2018-11-20	833	$0.00	5,833	No	4	M	Direct
Common Stock	Disposition	2018-11-20	433	$213.00	5,400	No	4	S	Direct
Common Stock	Disposition	2018-11-20	400	$213.00	5,000	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Restricted Stock Unit-1	Disposition	2018-11-20	833	$0.00	833	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
1,667			No	4	M	Direct

Footnotes

Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.
The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 13, 2017.
The sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 13, 2018.
1/12th of the 10,000 restricted stock units awarded vested on August 20, 2016 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.