[Form 4] Arista Networks Insider Trading Activity

Rhea-AI Filing Summary

Chantelle Y. Breithaupt, Senior Vice President and CFO of Arista Networks (ANET), reported insider transactions on Form 4. On 08/20/2025 she was credited with 10,920 restricted stock units (RSUs) that vested (reported as acquisition code M) and each RSU represents a contingent right to one share. To satisfy tax withholding on the vesting, 5,455 shares were withheld/disposed at $132.78. Following these transactions she directly beneficially owned 41,936 shares of common stock, and held derivative interests equating to 109,176 underlying shares from RSUs.

Positive

• 10,920 restricted stock units vested for the reporting person on 08/20/2025
• Clear vesting schedule disclosed: 25% vested Feb 20, 2025, then 6.25% each quarter on designated quarterly vest dates

Negative

• 5,455 shares were withheld/disposed at $132.78 to satisfy tax withholding, reducing direct holdings
• Direct beneficial ownership decreased to 41,936 shares following the tax-withholding disposition

Insights

Securities Analyst

TL;DR: CFO received vested RSUs and shares were withheld to cover taxes; net direct holdings decreased following withholding.

The filing documents routine executive compensation activity: 10,920 RSUs vested on 08/20/2025, and 5,455 shares were withheld/disposed at $132.78 to satisfy tax obligations. The report shows direct beneficial ownership of 41,936 common shares after the transactions and 109,176 shares underlying outstanding RSUs. This is a standard Section 16 disclosure reflecting compensation vesting and tax-withholding rather than open-market trading.

Corporate Governance Expert

TL;DR: The Form 4 records expected RSU vesting and tax-related share withholding by a named executive officer.

The disclosure identifies the reporting person as SVP and CFO and confirms the RSU vesting schedule: 25% vested Feb 20, 2025, then 6.25% quarterly on the first trading day on/after Feb 20, May 20, Aug 20, Nov 20. The transaction codes (M for vesting, F for shares withheld) and the attorney-in-fact signature are present, meeting filing formalities. No other unusual governance items or deviations are reported.

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^*

Breithaupt Chantelle Yvette

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Senior Vice President, CFO

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		10,920	A	$0.0(1)	47,391	D
Common Stock	08/20/2025		F(2)		5,455	D	$132.78	41,936	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-1	$0.0(1)	08/20/2025		M			10,920	(3)	(3)	Common Stock	10,920	$0.0	109,176	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. Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units.

3. Twenty five percent (25%) of the restricted stock units awarded vested on Feb 20, 2025 and will continue to vest at a rate of six and one-quarter percent (6.25%) each quarter 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 of each year.

	By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Chantelle Breithaupt	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 transactions did ANET insider Chantelle Breithaupt report on Form 4?

The Form 4 reports 10,920 RSUs vested (acquisition code M) on 08/20/2025 and 5,455 shares were withheld/disposed at $132.78 to satisfy tax withholding.

How many shares does Chantelle Breithaupt beneficially own after the reported transactions?

After the transactions the filing shows 41,936 shares of common stock (direct) beneficially owned.

How many shares underlie the reporting person's RSUs after the report?

The Form 4 reports 109,176 underlying shares attributable to outstanding restricted stock units.

What is the vesting schedule disclosed for the RSUs?

The RSUs vest: 25% vested on Feb 20, 2025, then 6.25% each quarter on the first trading day on or after Feb 20, May 20, Aug 20, and Nov 20.

What was the price used for the shares withheld to satisfy taxes?

The withheld/disposed shares were reported at a price of $132.78 per share.