[Form 4] Arista Networks, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Arista Networks, Inc. (ANET) director Yvonne Wassenaar reported an equity award transaction. On 11/20/2025, 971 shares of common stock were acquired at a price of $0.0 through the vesting and settlement of restricted stock units (RSUs), a form of stock-based compensation.

After this transaction, she beneficially owned 13,418 shares of Arista Networks common stock directly and held 1,942 RSUs. The RSUs were originally granted on May 30, 2025, with one quarter of the shares vesting on August 20, 2025 and additional portions scheduled to vest on each quarterly vest date thereafter, which falls on the first market trading day on or after February 20, May 20, August 20, or November 20.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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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 for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Wassenaar Yvonne

(Last) (First) (Middle)

5453 GREAT AMERICA PARKWAY

(Street)

SANTA CLARA CA 95054

(City) (State) (Zip)

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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/20/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/20/2025		M		971	A	$0.0(1)	13,418	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit-4	$0.0(1)	11/20/2025		M			971	(2)	(2)	Common Stock	971	$0.0	1,942	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

2. The reporting person was granted RSUs on May 30, 2025. 1/4th of the shares vest on August 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, or November 20.

	By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Yvonne Wassenaar	11/24/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Arista Networks (ANET) report in this Form 4?

The filing reports that director Yvonne Wassenaar acquired 971 shares of Arista Networks common stock on 11/20/2025 through the vesting and settlement of restricted stock units.

How many Arista Networks (ANET) shares does the reporting person own after this transaction?

Following the transaction, Yvonne Wassenaar beneficially owned 13,418 shares of Arista Networks common stock directly and held 1,942 RSUs.

What is the price associated with the 971 Arista Networks (ANET) shares acquired?

The 971 shares of Arista Networks common stock were acquired at a stated price of $0.0, reflecting that they came from RSU vesting rather than an open-market purchase.

When were the restricted stock units for Arista Networks (ANET) originally granted?

The reporting person was granted the RSUs on May 30, 2025, which later vested in part and converted into 971 shares of common stock on 11/20/2025.

How do the Arista Networks (ANET) RSUs vest for this director?

One quarter of the RSU grant vested on August 20, 2025, and additional portions are scheduled to vest on each quarterly vest date, defined as the first market trading day on or after February 20, May 20, August 20, or November 20.

What does each Arista Networks (ANET) restricted stock unit represent in this filing?

Each RSU represents a contingent right to receive one share of Arista Networks common stock upon vesting.