[Form 4] Arista Networks Insider Trading Activity

Rhea-AI Filing Summary

Yvonne Wassenaar, a director of Arista Networks (ANET), reported the vesting and acquisition of restricted stock units. The filing shows she was granted RSUs on May 30, 2025, with 1/4 of the award vesting on August 20, 2025. On that date 971 shares were issued to satisfy vested RSUs at a reported price of $0.0, and she now beneficially owns 12,447 shares of Arista common stock. The filing also reports 2,913 RSUs (contingent rights to receive shares on future vesting) retained after the transaction. The RSU award continues to vest quarterly on the first trading day on or after Feb 20, May 20, Aug 20, and Nov 20.

Positive

• Director received RSUs that vest over time, aligning her incentives with shareholders
• No sales were reported; the transaction was an acquisition of vested shares rather than a disposition

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Director received and vested RSUs, aligning her compensation with shareholder value without any sale of shares.

The Form 4 documents a routine equity compensation event: an RSU grant made May 30, 2025, with one-quarter vesting Aug 20, 2025 and subsequent quarterly vesting. The director acquired 971 shares upon vesting and retains additional RSUs and stock, which supports alignment of interests between management and shareholders. There is no sale or disposition disclosed, and ownership remains concentrated in long-term equity rather than cashing out.

Securities Analyst

TL;DR: Transaction is standard compensation vesting; immaterial to Arista's capitalization but relevant for insider ownership tracking.

The reported issuance of 971 shares from vested RSUs is a non-cash, routine compensation event. Beneficial ownership after the transaction is 12,447 shares with 2,913 RSUs remaining. For investors monitoring insider activity, this is a standard grant/vest pattern rather than a signal of liquidity needs or disposition. The filing contains clear vesting schedule details for future monitoring.

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

OMB Number:			3235-0287
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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)
08/20/2025

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	08/20/2025		M		971	A	$0.0(1)	12,447	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)	08/20/2025		M			971	(2)	(2)	Common Stock	971	$0.0	2,913	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	08/22/2025
	** 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 transaction did Yvonne Wassenaar report on the Form 4 for ANET?

She reported the vesting and issuance of 971 shares from restricted stock units on 08/20/2025.

How many Arista (ANET) shares does the reporting person own after the 08/20/2025 transaction?

Beneficial ownership reported after the transaction is 12,447 shares.

What is the remaining unvested RSU balance for the reporting person?

The filing shows 2,913 RSUs remain as contingent rights to receive common stock upon future vesting.

When were the RSUs granted and what is the vesting schedule?

The RSUs were granted on 05/30/2025; 1/4 vested on 08/20/2025 and the award continues to vest quarterly on the first trading day on or after Feb 20, May 20, Aug 20, and Nov 20.

Was any cash consideration reported for the vested shares?

The reported price for the vested RSUs is $0.0, indicating issuance upon vesting as equity compensation.