Arista Networks (ANET) director Charles Giancarlo details trust stock sales

Q: What insider activity did Arista Networks (ANET) disclose in this Form 4?

The filing shows that director Charles Giancarlo reported several open‑market sales of Arista Networks common stock on January 2, 2026 , executed through a family trust where he is co‑trustee.

Q: Were Charles Giancarlos Arista Networks (ANET) stock sales under a Rule 10b5-1 plan?

Yes. The filing states that the January 2, 2026 sales were made under a Rule 10b5-1 trading plan that Giancarlo entered into on June 12, 2025.

Q: At what prices did the Arista Networks (ANET) shares sell in this Form 4?

The reported weighted average prices were $132.9695, $133.6371, $134.9893, and $135.705 per share. Each reflects multiple trades within stated price ranges on January 2, 2026.

Q: How many Arista Networks (ANET) shares were sold in each reported transaction?

The trust sold 2,476 shares at a weighted average price of $132.9695, 3,524 shares at $133.6371, 1,800 shares at $134.9893, and 200 shares at $135.705, all coded as sales.

Q: Who held the Arista Networks (ANET) shares sold in this Form 4?

The sold shares were held by a family trust for which Charles Giancarlo is a co-trustee . The form classifies these as indirect beneficial ownership by the reporting person.

Q: Does the Form 4 describe any remaining Arista Networks (ANET) holdings for Charles Giancarlo?

Yes. After the reported sales, the form shows continued indirect holdings by the trust as well as a separate line disclosing 221,578 Arista Networks common shares held directly by Giancarlo.

Filing Impact

(High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Arista Networks director Charles Giancarlo reported multiple open‑market sales of company stock held in a family trust. On January 2, 2026, a trust for which he serves as co‑trustee sold blocks of Arista Networks common stock at weighted average prices of $132.9695, $133.6371, $134.9893, and $135.705 per share.

The sales, all coded as transaction type “S,” were made under a Rule 10b5‑1 trading plan that Giancarlo entered into on June 12, 2025. After these transactions, the trust continued to hold Arista Networks shares indirectly, and Giancarlo also reported a separate direct holding of common stock. The filing notes that each weighted average price reflects multiple trades within specified price ranges, and Giancarlo has agreed to provide full trade‑level detail upon request.

Insider Trade Summary

Net Seller: 8,000 shares ($1,070,291)

Net Sell 5 txns

Insider Giancarlo Charles H

Role Director

Sold 8,000 shs ($1.07M)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,476	$132.9695	$329K
Sale	Common Stock	3,524	$133.6371	$471K
Sale	Common Stock	1,800	$134.9893	$243K
Sale	Common Stock	200	$135.705	$27K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 23,308 shares (Indirect, by Trust); Common Stock — 221,578 shares (Direct)

Footnotes (1)

This sale was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 12, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.34 to $133.33, 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. These shares are held by a family trust for which the reporting person is co-trustee. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.34 to $134.28, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $134.45 to $135.39, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $135.51 to $135.90, 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.

Form 4 Insider Transactions: What Each Field Means →

01/06/2026 - 07:07 PM

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

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)
01/02/2026

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)
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	01/02/2026		S⁽¹⁾		2,476	D	$132.9695⁽²⁾	23,308	I	by Trust⁽³⁾
Common Stock	01/02/2026		S⁽¹⁾		3,524	D	$133.6371⁽⁴⁾	19,784	I	by Trust⁽³⁾
Common Stock	01/02/2026		S⁽¹⁾		1,800	D	$134.9893⁽⁵⁾	17,984	I	by Trust⁽³⁾
Common Stock	01/02/2026		S⁽¹⁾		200	D	$135.705⁽⁶⁾	17,784	I	by Trust⁽³⁾
Common Stock								221,578	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)
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)

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 $132.34 to $133.33, 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 $133.34 to $134.28, 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 $134.45 to $135.39, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $135.51 to $135.90, 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	01/06/2026
	** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider activity did Arista Networks (ANET) disclose in this Form 4?

The filing shows that director Charles Giancarlo reported several open‑market sales of Arista Networks common stock on January 2, 2026, executed through a family trust where he is co‑trustee.

Were Charles Giancarlos Arista Networks (ANET) stock sales under a Rule 10b5-1 plan?

Yes. The filing states that the January 2, 2026 sales were made under a Rule 10b5-1 trading plan that Giancarlo entered into on June 12, 2025.

At what prices did the Arista Networks (ANET) shares sell in this Form 4?

The reported weighted average prices were $132.9695, $133.6371, $134.9893, and $135.705 per share. Each reflects multiple trades within stated price ranges on January 2, 2026.

How many Arista Networks (ANET) shares were sold in each reported transaction?

The trust sold 2,476 shares at a weighted average price of $132.9695, 3,524 shares at $133.6371, 1,800 shares at $134.9893, and 200 shares at $135.705, all coded as sales.

Who held the Arista Networks (ANET) shares sold in this Form 4?

The sold shares were held by a family trust for which Charles Giancarlo is a co-trustee. The form classifies these as indirect beneficial ownership by the reporting person.

Does the Form 4 describe any remaining Arista Networks (ANET) holdings for Charles Giancarlo?

Yes. After the reported sales, the form shows continued indirect holdings by the trust as well as a separate line disclosing 221,578 Arista Networks common shares held directly by Giancarlo.