[Form 4] Arista Networks Insider Trading Activity

Rhea-AI Filing Summary

Arista Networks (ANET) – Form 4 filed 05 Aug 2025

Director Charles H. Giancarlo reported the sale of 8,000 common shares on 01 Aug 2025 under a pre-arranged Rule 10b5-1 plan adopted 14 Jun 2024. The shares were disposed of in three open-market transactions at weighted-average prices of $116.09, $116.98 and $117.96, for aggregate proceeds of roughly $0.9 million.

Post-sale, Giancarlo continues to hold 219,636 shares directly, 57,784 shares indirectly through a family trust and 50,000 shares via a charitable remainder trust, or about 327 k shares in total. No derivative securities or option exercises were reported, and the filing cites no company-specific events, suggesting the transactions are routine portfolio diversification.

Positive

• Sale executed under a pre-arranged Rule 10b5-1 plan, limiting concerns about opportunistic trading and signaling compliance with insider-trading safeguards.

Negative

• Director disposed of 8,000 shares (~US$0.9 M), which some investors may interpret as a modest bearish indicator despite the plan-based nature of the trade.

Insights

Securities Analyst

TL;DR: Small, planned insider sale; neutral signal.

The Form 4 shows an orderly disposition of 8 k ANET shares (~US$0.9 M) by Director Charles Giancarlo under a 10b5-1 plan. The sale reduces his indirect family-trust stake but leaves overall ownership at ~327 k shares, preserving significant alignment with shareholders. Given the modest size relative to both his holdings and Arista’s >US$100 B market capitalisation, the move is unlikely to influence fundamentals or market sentiment materially. No derivatives or unusual timing flags appear, so we classify the filing as routine and impact-neutral.

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).

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)
08/01/2025

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	08/01/2025		S(1)		1,802	D	$116.0858(2)	63,982	I	by Trust(3)
Common Stock	08/01/2025		S(1)		4,357	D	$116.9809(4)	59,625	I	by Trust(3)
Common Stock	08/01/2025		S(1)		1,841	D	$117.9637(5)	57,784	I	by Trust(3)
Common Stock								219,636	D
Common Stock								50,000	I	Charitable Trust(6)

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 14, 2024.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.46 to $116.44, 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 $116.51 to $117.50, 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.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $117.51 to $118.32, 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.

6. These shares are held by a Charitable Remainder Trust for which the reporting person is co-trustee.

	By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Charles Giancarlo	08/05/2025
	** 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

How many Arista Networks (ANET) shares did Director Charles Giancarlo sell?

He sold 8,000 common shares on 01 Aug 2025.

What were the sale prices for the ANET shares?

Weighted-average prices were $116.09, $116.98 and $117.96 per share.

Was the transaction executed under a trading plan?

Yes, it was conducted pursuant to a Rule 10b5-1 plan adopted on 14 Jun 2024.

How many ANET shares does Giancarlo still own after the sale?

He beneficially owns about 327,420 shares (219,636 direct; 57,784 family trust; 50,000 charitable trust).

Did the Form 4 report any derivative securities or option exercises?

No, the filing lists no derivative holdings or option activity.