Arista director gains 971 shares via RSU vesting

Arista Networks director Yvonne Wassenaar acquired 971 shares of common stock on February 20, 2026 through the exercise of restricted stock units.

Accepted by SEC EDGAR 02/24/2026 - 07:22 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Arista Networks director Yvonne Wassenaar acquired 971 shares of common stock on February 20, 2026 through the exercise of restricted stock units. This reflects the vesting of 971 RSUs, each converting into one share at a price of $0.00 per share. Following the transaction, her directly held common stock totaled 14,389 shares, and 971 RSUs remained outstanding under the same award, which vests quarterly starting August 20, 2025.

Insider Trade Summary

971 shares exercised/converted

Exercise 2 txns

Insider Wassenaar Yvonne

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit-4	971	$0.00	$0.00
Exercise	Common Stock	971	$0.00	$0.00

Holdings After Transaction: Restricted Stock Unit-4 — 971 contracts (Direct); Common Stock — 14,389 shares (Direct)

Holdings Before and After: Restricted Stock Unit-4, 1,942 to 971 contracts (Direct); Common Stock, 13,418 to 14,389 shares (Direct)

Footnotes (2)

1. F1. Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.
2. F2. 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.

FAQ

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What did Arista Networks (ANET) director Yvonne Wassenaar report on this Form 4?

Yvonne Wassenaar reported acquiring 971 Arista Networks shares through restricted stock unit vesting. The RSUs converted into common stock at $0.00 per share, increasing her directly owned common stock to 14,389 shares as of the transaction date.

How many Arista Networks (ANET) shares did Yvonne Wassenaar acquire in this Form 4 filing?

She acquired 971 shares of Arista Networks common stock through the exercise of restricted stock units. Each RSU represented a right to receive one share upon vesting, with no cash purchase price involved in the conversion reported on February 20, 2026.

What are the vesting terms of Yvonne Wassenaar’s Arista Networks (ANET) RSUs?

The RSUs were granted on May 30, 2025. One-quarter of the shares vest on August 20, 2025, with additional portions vesting on each quarterly vest date, defined as the first market trading day on or after February 20, May 20, August 20, or November 20.

Does the Form 4 indicate any open-market buying or selling of Arista Networks (ANET) shares?

The Form 4 shows an exercise or conversion of restricted stock units into 971 common shares, not an open-market purchase or sale. The transaction code is “M,” which indicates derivative security exercise, with a price of $0.00 per share for the conversion.

How many Arista Networks (ANET) shares does Yvonne Wassenaar directly own after this Form 4 transaction?

After this transaction, she directly owns 14,389 shares of Arista Networks common stock. This total reflects the addition of 971 shares received from the vesting and conversion of restricted stock units on February 20, 2026, as reported in the filing.

What type of securities were involved in Yvonne Wassenaar’s Arista Networks (ANET) Form 4 filing?

The filing involves restricted stock units and common stock. First, 971 RSUs were exercised or converted, then 971 shares of common stock were issued. Each RSU corresponds to one share of Arista Networks common stock upon vesting under the award’s terms.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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
Estimated average burden
hours per response:			0.5

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)
02/20/2026

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	02/20/2026		M		971	A	$0.0(1)	14,389	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)	02/20/2026		M			971	(2)	(2)	Common Stock	971	$0.0	971	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	02/24/2026
	** 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.