Arista director gets 538 shares from RSU vesting

Q: What insider transaction did ANET director Charles H. Giancarlo report on August 20, 2026?

He reported the vesting and settlement of 538 Restricted Stock Units into 538 shares of Arista Networks, Inc. Common Stock on August 20, 2026, via an exercise or conversion of a derivative security coded as transaction type "M."

Q: What are the vesting terms of the RSUs reported by ANET director Giancarlo?

The filing states that Giancarlo was granted RSUs on May 29, 2026. One-quarter of the shares vest on August 20, 2026, and they will continue to vest at the same rate on each quarterly vest date thereafter.

Q: How does the filing define a quarterly vest date for Giancarlo’s ANET RSUs?

A quarterly vest date is defined as the first market trading day on or after February 20, May 20, August 20, or November 20, according to the RSU footnote in the filing.

Arista Networks, Inc. (ANET) director Charles H. Giancarlo reported the vesting and settlement of 538 Restricted Stock Units into 538 shares of Common Stock on August 20, 2026.

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Rhea-AI Filing Summary

Arista Networks, Inc. (ANET) director Charles H. Giancarlo reported the vesting and settlement of 538 Restricted Stock Units into 538 shares of Common Stock on August 20, 2026. The RSU award was granted on May 29, 2026, with one-quarter vesting on August 20, 2026 and additional tranches vesting on quarterly vest dates thereafter.

After these transactions, Giancarlo holds 1,509 shares of Arista Common Stock directly and 184,333 shares indirectly through a family trust for which he is co‑trustee.

Insider Trade Summary

538 shares exercised/converted

Exercise 3 txns

Insider Giancarlo Charles H

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit-7 ^{F1, F3}	538	$0.00	$0.00
Exercise	Common Stock ^F1	538	$0.00	$0.00
holding	Common Stock ^F2	--	--	--

Holdings After Transaction: Restricted Stock Unit-7 — 1,615 contracts (Direct); Common Stock — 1,509 shares (Direct); Common Stock — 184,333 shares (Indirect, by Trust)

Footnotes (3)

F1. Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.
F2. These shares are held by a family trust for which the reporting person is co-trustee.
F3. 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/converted: 538 units Common Stock acquired from RSU conversion: 538 shares Direct Common Stock holdings after transaction: 1,509 shares +3 more

6 metrics

RSUs exercised/converted 538 units Restricted Stock Units converted into Common Stock on August 20, 2026

Common Stock acquired from RSU conversion 538 shares Shares of Arista Networks, Inc. Common Stock received on August 20, 2026

Direct Common Stock holdings after transaction 1,509 shares Direct ownership reported following August 20, 2026 transactions

Indirect Common Stock holdings by trust 184,333 shares Held by a family trust for which the reporting person is co‑trustee

RSU grant date May 29, 2026 Grant date of the RSUs that are vesting and settling into Common Stock

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

Key Terms

Restricted Stock Unit, quarterly vest date, co-trustee

3 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.

quarterly vest date financial

"A quarterly vest date is the first market trading day on or after"

co-trustee financial

"These shares are held by a family trust for which the reporting person is co-trustee"

FAQ

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

What insider transaction did ANET director Charles H. Giancarlo report on August 20, 2026?

He reported the vesting and settlement of 538 Restricted Stock Units into 538 shares of Arista Networks, Inc. Common Stock on August 20, 2026, via an exercise or conversion of a derivative security coded as transaction type "M."

How many ANET shares does Charles H. Giancarlo own directly after this Form 4?

Following the reported transactions, Charles H. Giancarlo holds 1,509 shares of Arista Networks, Inc. Common Stock directly.

What are Charles H. Giancarlo’s indirect holdings of ANET stock?

In addition to his direct holdings, Giancarlo is co‑trustee of a family trust that holds 184,333 shares of Arista Networks, Inc. Common Stock, reported as indirect ownership "by Trust."

What are the vesting terms of the RSUs reported by ANET director Giancarlo?

The filing states that Giancarlo was granted RSUs on May 29, 2026. One-quarter of the shares vest on August 20, 2026, and they will continue to vest at the same rate on each quarterly vest date thereafter.

How does the filing define a quarterly vest date for Giancarlo’s ANET RSUs?

A quarterly vest date is defined as the first market trading day on or after February 20, May 20, August 20, or November 20, according to the RSU footnote in the filing.

Did Charles H. Giancarlo buy or sell ANET shares on the open market in this Form 4?

No open-market purchases or sales are reported. The transactions reflect exercise or conversion of RSUs into 538 shares of Common Stock and related changes between derivative and non-derivative holdings.

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

Form 4 Insider Transactions: What Each Field Means →

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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

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^*

Giancarlo Charles H

(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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/20/2026		M		538	A	$0.0⁽¹⁾	1,509	D
Common Stock								184,333	I	by Trust⁽²⁾

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Unit-7	$0.0⁽¹⁾	08/20/2026		M			538	⁽³⁾	⁽³⁾	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. These shares are held by a family trust for which the reporting person is co-trustee.

3. 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: Charles Giancarlo	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)

Source: View Original Filing on SEC EDGAR