[Form 4] Arista Networks Insider Trading Activity

Rhea-AI Filing Summary

Robert G. Lavender, a director of Arista Networks, reported an insider transaction filed on Form 4 showing restricted stock units (RSUs) vesting and resulting share ownership changes. On 08/20/2025 Lavender was credited with 808 shares of Common Stock (transaction code M) related to RSU vesting, recorded with a $0.0 price per share as these were granted equity awards. After the transaction, the report shows Lavender beneficially owns 1,647 shares of Common Stock as direct holdings in the non-derivative table and 2,422 shares equivalent in the derivative table reflecting underlying RSUs.

The RSUs were originally granted on 03/14/2025, with one quarter vesting on 08/20/2025 and the remainder scheduled to vest quarterly thereafter on the first trading day on or after Feb 20, May 20, Aug 20, and Nov 20. The form was signed by an attorney-in-fact on behalf of Lavender on 08/22/2025. The filing includes a note that reported share totals are rounded and the actual holdings include a fractional share.

Positive

• Director equity alignment: 808 RSUs vested, increasing the reporting person’s direct ownership and aligning executive interests with shareholders.
• Clear vesting schedule disclosed: Grant date (03/14/2025) and quarterly vest dates are specified, improving transparency.

Negative

• None.

Insights

Financial Analyst

TL;DR: Routine RSU vesting increased a director's direct holdings by 808 shares; no cash purchase or sale occurred.

The filing documents a standard equity award vesting event for a director rather than an open-market purchase or sale. The transaction code M and $0.0 price indicate conversion/vesting of previously granted RSUs into common stock. The resulting direct beneficial ownership figures—1,647 shares reported in the non-derivative table and 2,422 shares reflected in the derivative table—represent reported totals including fractional-share rounding. This is a compliance disclosure of compensation-related equity vesting and appears immaterial to company capital structure absent larger context.

Corporate Governance Expert

TL;DR: This Form 4 records scheduled RSU vesting for a director with customary quarterly vesting cadence.

The disclosure is clear on grant and vesting schedule: RSUs were granted on 03/14/2025 with 25% vesting on 08/20/2025 and subsequent quarterly vesting. The form was executed by an attorney-in-fact, which is typical for insider filings. There are no indications of accelerated vesting, transfers, or derivative exercises beyond the reported conversion of RSUs to shares. From a governance perspective, the filing meets Section 16 reporting requirements and reflects routine equity compensation administration.

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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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^*

Lavender Robert G

(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		808	A	$0.0(1)	1,647(2)	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-2	$0.0(1)	08/20/2025		M			808	(3)	(3)	Common Stock	808	$0.0	2,422	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 sum of the shares reflects a rounded whole number of shares held. The actual number includes a fractional share of stock.

3. The reporting person was granted RSUs on March 14, 2025. 1/4th of the shares vested 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: Robert Lavender	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 did Robert G. Lavender report on the Form 4 for ANET?

The Form 4 reports the vesting conversion of 808 RSUs into Common Stock on 08/20/2025, increasing his reported direct holdings.

How many shares does Lavender beneficially own after the reported transaction?

The filing shows 1,647 shares in the non-derivative table and 2,422 shares reflected in the derivative table as underlying RSUs.

What was the price paid for the vested shares?

The transaction is reported at $0.0, indicating the shares were issued on vesting of RSUs rather than purchased.

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

RSUs were granted on 03/14/2025; 1/4 vested on 08/20/2025 with subsequent quarterly vesting on or after Feb 20, May 20, Aug 20, and Nov 20.

Who signed the Form 4 on behalf of the reporting person?

The form was executed By: Isabelle Bertin-Bailly, Attorney-in-Fact for Robert Lavender on 08/22/2025.