Arista Networks (ANET) director-linked trust sells 8,000 company shares

Rhea-AI Filing Summary

Arista Networks, Inc. director Charles H. Giancarlo is associated with a family trust that sold a total of 8,000 shares of Arista common stock in three open-market transactions on March 2, 2026. The shares were sold at weighted average prices of $127.9014, $128.8734 and $129.9489 under a Rule 10b5-1 trading plan entered on June 12, 2025. After these indirect sales by the trust, 1,784 shares remained in the trust, while Giancarlo also directly held 222,549 shares.

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).

X

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)
03/02/2026

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	03/02/2026		S(1)		3,100	D	$127.9014(2)	6,684	I	by Trust(3)
Common Stock	03/02/2026		S(1)		3,600	D	$128.8734(4)	3,084	I	by Trust(3)
Common Stock	03/02/2026		S(1)		1,300	D	$129.9489(5)	1,784	I	by Trust(3)
Common Stock								222,549	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

Explanation of Responses:

1. This sale was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 12, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $127.46 to $128.36, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.51 to $129.40, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $129.52 to $130.50, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

	By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Charles Giancarlo	03/04/2026
	** 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) disclose in this Form 4?

Arista Networks disclosed that a family trust associated with director Charles H. Giancarlo sold 8,000 shares of common stock in three open-market transactions on March 2, 2026, at weighted average prices around $128–$130 per share, under a pre-established Rule 10b5-1 trading plan.

How many Arista Networks (ANET) shares were sold and at what prices?

The family trust sold 8,000 Arista Networks common shares in three blocks: 3,100 shares at $127.9014, 3,600 shares at $128.8734 and 1,300 shares at $129.9489. Each block represents a weighted average price for multiple trades executed within a narrow intraday range.

Was the Arista Networks (ANET) insider sale under a Rule 10b5-1 plan?

Yes. The Form 4 states the sale was effected under a Rule 10b5-1 trading plan entered on June 12, 2025. Such plans pre-schedule trades, allowing insiders to sell shares over time according to predetermined instructions, helping separate trading decisions from later information.

Who actually holds the Arista Networks (ANET) shares involved in this Form 4?

The sold shares were held by a family trust for which Charles H. Giancarlo is co-trustee. This means the transactions are attributed to the trust rather than directly to him personally, though he is associated with the holdings through his trustee role disclosed in the filing.

How many Arista Networks (ANET) shares does the insider report owning after the sale?

After the reported transactions, the family trust held 1,784 Arista Networks shares indirectly associated with director Charles H. Giancarlo. Separately, he reported direct ownership of 222,549 common shares, giving investors a clearer picture of his remaining economic exposure following the 8,000-share sale.

What does the weighted average price disclosure mean in the Arista (ANET) Form 4?

The filing explains each reported price is a weighted average across multiple trades within a price range. The insider undertakes to provide full trade-by-trade details, including exact share counts at each price, to Arista Networks, its security holders or SEC staff upon request for transparency.