Arista Networks, Inc. (Form: 4, Received: 10/21/2025 19:09:07)

FORM 4 ☐ Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). ☒ Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^* Duda Kenneth	2. Issuer Name and Ticker or Trading Symbol Arista Networks, Inc. [ ANET ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President and CTO
(Last) (First) (Middle) 5453 GREAT AMERICA PARKWAY	3. Date of Earliest Transaction (MM/DD/YYYY) 10/17/2025
(Street) SANTA CLARA, CA 95054	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person
(City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	10/17/2025		M⁽¹⁾		30,000	A	$3.515	42,976	D
Common Stock	10/17/2025		S⁽¹⁾		1,307	D	$140.0367 ⁽²⁾	41,669	D
Common Stock	10/17/2025		S⁽¹⁾		1,612	D	$140.9664 ⁽³⁾	40,057	D
Common Stock	10/17/2025		S⁽¹⁾		5,662	D	$142.2039 ⁽⁴⁾	34,395	D
Common Stock	10/17/2025		S⁽¹⁾		17,352	D	$143.0645 ⁽⁵⁾	17,043	D
Common Stock	10/17/2025		S⁽¹⁾		4,067	D	$143.7229 ⁽⁶⁾	12,976	D
Common Stock	10/17/2025		S⁽⁷⁾		697	D	$140.0367 ⁽²⁾	1,190,471	I	By Childrens' Trust ⁽⁸⁾
Common Stock	10/17/2025		S⁽⁷⁾		860	D	$140.9664 ⁽³⁾	1,189,611	I	By Childrens' Trust ⁽⁸⁾
Common Stock	10/17/2025		S⁽⁷⁾		3,020	D	$142.2039 ⁽⁴⁾	1,186,591	I	By Childrens' Trust ⁽⁸⁾
Common Stock	10/17/2025		S⁽⁷⁾		9,255	D	$143.0645 ⁽⁵⁾	1,177,336	I	By Childrens' Trust ⁽⁸⁾
Common Stock	10/17/2025		S⁽⁷⁾		2,168	D	$143.7229 ⁽⁶⁾	1,175,168	I	By Childrens' Trust ⁽⁸⁾
Common Stock	10/17/2025		S⁽⁹⁾		436	D	$140.0367 ⁽²⁾	561,964	I	By Foundation ⁽¹⁰⁾
Common Stock	10/17/2025		S⁽⁹⁾		537	D	$140.9664 ⁽³⁾	561,427	I	By Foundation ⁽¹⁰⁾
Common Stock	10/17/2025		S⁽⁹⁾		1,887	D	$142.2039 ⁽⁴⁾	559,540	I	By Foundation ⁽¹⁰⁾
Common Stock	10/17/2025		S⁽⁹⁾		5,784	D	$143.0645 ⁽⁵⁾	553,756	I	By Foundation ⁽¹⁰⁾
Common Stock	10/17/2025		S⁽⁹⁾		1,356	D	$143.7229 ⁽⁶⁾	552,400	I	By Foundation ⁽¹⁰⁾
Common Stock								762,035	I	By GRAT JD ⁽¹¹⁾
Common Stock								762,035	I	By GRAT KD ⁽¹²⁾
Common Stock								9,303	I	by Trust ⁽¹³⁾

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)			11. Nature of Indirect Beneficial Ownership (Instr. 4)
Non-Qualified Stock Option (right to buy)	$3.515	10/17/2025		M ⁽¹⁾			30,000	⁽¹⁴⁾	2/11/2026	Common Stock	30,000	$0	90,000	D

Explanation of Responses:
(1)	The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 13, 2025.
(2)	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $139.47 to $140.44, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(3)	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $140.50 to $141.42, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(4)	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $141.5862 to $142.585, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(5)	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $142.60 to $143.59, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(6)	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $143.60 to $144.22, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
(7)	The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 13, 2025.
(8)	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.
(9)	The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 13, 2025 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.
(10)	These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.
(11)	Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.
(12)	Reporting person is the trustee of the Kenneth Duda Annuity Trusts.
(13)	These shares are held by a family trust for which the reporting person is co-trustee.
(14)	1/60th of the shares subject to the option vested and became exercisable on April 1, 2017 and 1/60th of the shares subject to the option shall vested monthly thereafter.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Duda Kenneth 5453 GREAT AMERICA PARKWAY SANTA CLARA, CA 95054	X		President and CTO

Signatures
By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda		10/21/2025
^**Signature of Reporting Person		Date

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*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
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