Kenneth Duda - 20 Aug 2025 Form 4 Insider Report for Arista Networks, Inc. (ANET)

Role: CTO and SVP Software Eng., Director
Signature: By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda
Issuer symbol: ANET
Transactions as of: 20 Aug 2025
Net transactions value: -$1,038,074
Form type: 4
Filing time: 22 Aug 2025, 21:03:21 UTC
Previous filing: 20 Aug 2025
Next filing: 02 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Duda Kenneth	CTO and SVP Software Eng., Director	5453 GREAT AMERICA PARKWAY, SANTA CLARA	By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda	22 Aug 2025	0001605808

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ANET	Common Stock	Options Exercise	$0	+5,712	+22%	$0.000000	31,327	20 Aug 2025	by Trust	F1
transaction	ANET	Common Stock	Options Exercise	$0	+3,884	+12%	$0.000000	35,211	20 Aug 2025	by Trust	F1
transaction	ANET	Common Stock	Options Exercise	$0	+4,148	+12%	$0.000000	39,359	20 Aug 2025	by Trust	F1
transaction	ANET	Common Stock	Options Exercise	$0	+1,832	+4.7%	$0.000000	41,191	20 Aug 2025	by Trust	F1
transaction	ANET	Common Stock	Tax liability	$1,038,074	-7,818	-19%	$132.78	33,373	20 Aug 2025	by Trust	F2
holding	ANET	Common Stock						12,976	20 Aug 2025	Direct
holding	ANET	Common Stock						1,207,168	20 Aug 2025	By Childrens' Trust	F3
holding	ANET	Common Stock						572,400	20 Aug 2025	By Foundation	F4
holding	ANET	Common Stock						750,000	20 Aug 2025	By GRAT JD	F5
holding	ANET	Common Stock						750,000	20 Aug 2025	By GRAT KD	F6

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-11	Options Exercise	$0	-4,148	-10%	$0.000000	37,328	20 Aug 2025	Common Stock	4,148	$0.000000	Direct	F1, F7
transaction	ANET	Restricted Stock Unit-13	Options Exercise	$0	-1,832	-7.1%	$0.000000	23,856	20 Aug 2025	Common Stock	1,832	$0.000000	Direct	F1, F8
transaction	ANET	Restricted Stock Unit-7	Options Exercise	$0	-5,712	-50%	$0.000000	5,712	20 Aug 2025	Common Stock	5,712	$0.000000	Direct	F1, F9
transaction	ANET	Restricted Stock Unit-8	Options Exercise	$0	-3,884	-17%	$0.000000	19,412	20 Aug 2025	Common Stock	3,884	$0.000000	Direct	F1, F10

* 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	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.
F4	These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.
F5	Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.
F6	Reporting person is the trustee of the Kenneth Duda Annuity Trusts.
F7	Six and one-quarter percent (6.25%) of the restricted stock units awarded will vest 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.
F8	Six and one-quarter percent (6.25%) of the restricted stock 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.
F9	Six and one-quarter percent (6.25%) of the restricted stock units awarded will vest on February 20, 2022 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.
F10	Six and one-quarter percent (6.25%) of the restricted stock units awarded will vest 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.