Arista Networks insider converts 538 RSUs

Arista Networks, Inc. (ANET) reported a Form 4 for director Lewis Chew showing the vesting and conversion of restricted stock units into common stock.

Rhea-AI Filing Summary

Arista Networks, Inc. (ANET) reported a Form 4 for director Lewis Chew showing the vesting and conversion of restricted stock units into common stock. On August 20, 2026, 538 RSUs (each representing a contingent right to one share of common stock) were exercised and converted into 538 shares of common stock at a $0.00 exercise price. Following this transaction, Chew directly held 31,770 shares of Arista common stock and 1,615 RSUs. The RSUs were granted on May 29, 2026, with one quarter of the shares vesting on August 20, 2026 and the remainder scheduled to vest on subsequent quarterly vest dates.

Insider Trade Summary

538 shares exercised/converted

Exercise 2 txns

Insider CHEW LEWIS

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit-6 F1, F2	538	$0.00	$0.00
Exercise	Common Stock F1	538	$0.00	$0.00

Holdings After Transaction: Restricted Stock Unit-6 — 1,615 contracts (Direct); Common Stock — 31,770 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 29, 2026. 1/4th of the shares vest on August 20, 2026 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.

Key Figures

RSUs exercised: 538 shares Exercise price: $0.00 per share Common stock holdings after transaction: 31,770 shares +3 more

6 metrics

RSUs exercised 538 shares Restricted Stock Units converted to common stock on August 20, 2026

Exercise price $0.00 per share RSU-to-common stock conversion on August 20, 2026

Common stock holdings after transaction 31,770 shares Direct ownership by Lewis Chew after August 20, 2026 transactions

RSU holdings after transaction 1,615 units Restricted stock units remaining after the reported RSU conversion

RSU grant date May 29, 2026 Grant date of the RSUs subject to quarterly vesting

Initial vesting fraction 1/4 of shares Portion of the RSU grant vesting on August 20, 2026

Key Terms

Restricted Stock Unit, contingent right, quarterly vest date, derivative security

4 terms

Restricted Stock Unit financial

"Each restricted stock unit represents a contingent right to receive one share"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

contingent right financial

"represents a contingent right to receive one share of Arista Networks, Inc."

quarterly vest date financial

"will continue to vest at the same rate on each quarterly vest date thereafter"

derivative security financial

"Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Lewis Chew report for Arista Networks (ANET)?

Lewis Chew reported the exercise of 538 restricted stock units into 538 shares of Arista Networks, Inc. common stock on August 20, 2026, via a derivative exercise/conversion transaction coded “M.”

How many Arista Networks (ANET) shares does Lewis Chew hold after this Form 4 transaction?

After the reported transactions, Lewis Chew directly holds 31,770 shares of Arista Networks, Inc. common stock and 1,615 restricted stock units, according to the Form 4 data.

What was the price for the RSU conversion reported for ANET?

The 538 restricted stock units converted into common stock at an exercise price of $0.00 per share, reflecting the nature of RSUs as equity awards rather than market purchases.

What is the vesting schedule of Lewis Chew’s RSUs at Arista Networks (ANET)?

Lewis Chew was granted RSUs on May 29, 2026. 1/4 of the shares vest on August 20, 2026, and the remaining RSUs continue to vest at the same rate on each quarterly vest date thereafter, defined as the first market trading day on or after February 20, May 20, August 20, or November 20.

Were Lewis Chew’s ANET transactions under a Rule 10b5-1 trading plan?

The filing indicates the Rule 10b5-1 checkbox is not affirmed (aff_10b5_one is false), and there is no footnote stating that the transactions were made pursuant to a Rule 10b5-1 trading plan.

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

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Available on EDGAR 08/24/2026 - 06:12 PM EDT Accepted by SEC EDGAR 08/24/2026 - 06:12 PM EDT Learn about SEC filing dates

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^*

CHEW LEWIS

(Last) (First) (Middle)

5453 GREAT AMERICA PARKWAY

(Street)

SANTA CLARA CALIFORNIA 95054

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/20/2026

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

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

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

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	08/20/2026		M		538	A	$0.0(1)	31,770	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-6	$0.0(1)	08/20/2026		M			538	(2)	(2)	Common Stock	538	$0.0	1,615	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 29, 2026. 1/4th of the shares vest on August 20, 2026 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: Lewis Chew	08/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)