Director at Arista (NYSE: ANET) acquires 971 shares via RSUs

Rhea-AI Filing Summary

Arista Networks director Charles H. Giancarlo exercised 971 restricted stock units on February 20, 2026, receiving 971 shares of common stock at $0.00 per share through a derivative exercise. After this transaction, his directly held common stock position is 222,549 shares. A separate line shows 9,784 shares of common stock held indirectly by a family trust for which he is co‑trustee, reflecting ongoing indirect ownership rather than a new trade.

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

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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 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)	222,549	D
Common Stock								9,784	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit-6	$0.0(1)	02/20/2026		M			971	(3)	(3)	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. 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 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: Charles Giancarlo	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.
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FAQ

What insider transaction did Arista Networks (ANET) report for Charles H. Giancarlo?

Arista Networks reported that director Charles H. Giancarlo exercised 971 restricted stock units into 971 shares of common stock. This was a derivative exercise at $0.00 per share, not an open-market purchase or sale, increasing his directly held share count.

How many Arista Networks (ANET) shares does Charles H. Giancarlo now hold directly?

Following the February 20, 2026 derivative exercise, Charles H. Giancarlo directly holds 222,549 shares of Arista Networks common stock. This reflects the addition of 971 shares received from the vesting and conversion of restricted stock units granted under the company’s equity program.

Were the 971 Arista Networks (ANET) shares a market purchase or RSU vesting?

The 971 Arista Networks shares were received through the exercise and conversion of restricted stock units, not a market purchase. The Form 4 identifies the transaction with code M, indicating a derivative security exercise at $0.00 per share rather than an open-market trade.

Does Charles H. Giancarlo have indirect ownership of Arista Networks (ANET) shares?

Yes. The filing shows 9,784 Arista Networks common shares held indirectly by a family trust for which he is co‑trustee. This reflects beneficial ownership through the trust structure, separate from his 222,549 directly held shares reported in his personal account.

What do the restricted stock unit terms disclose for Arista Networks (ANET)?

Each restricted stock unit represents a contingent right to receive one Arista Networks common share upon vesting. The filing notes quarterly vesting dates tied to specific calendar days, with units converting into common stock as they vest over time under the grant’s schedule.

How many derivative transactions did the Arista Networks (ANET) Form 4 report?

The Form 4 shows one derivative security line for restricted stock units and one corresponding non-derivative line for common stock, both reflecting a 971-share exercise on February 20, 2026. Summary data classifies two acquire-side transactions and no reported sales or disposals overall.