Does the Form 4 mention weighted average pricing for the ANET share sales?

Yes. Several footnotes state that the reported sale prices are weighted average prices . They explain the shares were sold in multiple transactions, with separate ranges such as $162.08–$163.00 and up to $171.32–$172.28 per share.

Family trust of Arista Networks (ANET) director sells 8,000 shares under 10b5-1 plan

Q: What did Arista Networks (ANET) director Charles H. Giancarlo report on this Form 4?

He reported that a family trust associated with him sold 8,000 shares of Arista Networks common stock on June 1, 2026 . These were open-market sales executed under a pre-arranged Rule 10b5-1 trading plan rather than spontaneous trades.

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

The Form 4 shows aggregate sales of 8,000 common shares . The filing states weighted average sale prices across multiple trades with price ranges spanning from $162.08 to $172.28 per share, reflecting numerous small transactions within those bands.

Q: Who actually holds the Arista Networks (ANET) shares involved in these transactions?

The shares are held by a family trust for which Charles H. Giancarlo serves as co-trustee. The transactions are therefore attributed to this trust, with the Form 4 explaining that the trust, not just Giancarlo personally, is the direct owner of the sold shares.

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

Yes. A footnote states the sale was effected under a Rule 10b5-1 trading plan entered into on June 12, 2025 . Such plans pre-schedule trades, meaning the timing of these sales was determined in advance rather than decided opportunistically.

Q: How many Arista Networks (ANET) shares does Charles H. Giancarlo report owning after the sale?

After the reported sales, he reports 971 shares of common stock held directly. He also reports 208,031 shares held indirectly through the family trust. These post-transaction balances are disclosed in the Form 4’s ownership columns for direct and indirect holdings.

Filing Impact

(High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Arista Networks, Inc. director Charles H. Giancarlo reported a series of open-market sales of 8,000 shares of common stock on June 1, 2026 by a family trust for which he is co-trustee. The shares were sold at weighted average prices within ranges from $162.08 to $172.28 per share under a pre-arranged Rule 10b5-1 trading plan. Following these transactions, he reports holding 971 shares directly and 208,031 shares indirectly through the trust.

Insider Trade Summary 10b5-1

Net Seller: 8,000 shares ($1,352,728)

Net Sell 10 txns

Insider Giancarlo Charles H

Role null

Sold 8,000 shs ($1.35M)

Type	Security	Shares	Price	Value
Sale	Common Stock	302	$162.2778	$49K
Sale	Common Stock	52	$164.484	$9K
Sale	Common Stock	81	$165.8915	$13K
Sale	Common Stock	916	$166.7576	$153K
Sale	Common Stock	1,467	$167.6968	$246K
Sale	Common Stock	1,271	$168.9189	$215K
Sale	Common Stock	1,092	$169.7858	$185K
Sale	Common Stock	1,413	$170.8665	$241K
Sale	Common Stock	1,406	$171.7154	$241K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 208,031 shares (Indirect, by Trust); Common Stock — 971 shares (Direct, null)

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 $162.08 to $163.00, 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 $164.00 to $164.99, 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 $165.29 to $166.25, 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 $166.29 to $167.26, 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 $167.30 to $168.26, 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 $168.31 to $169.30, 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 $169.32 to $170.31, 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 $170.32 to $171.31, 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 $171.32 to $172.28, 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.

Key Figures

Shares sold: 8,000 shares Price range: $162.08–$172.28 per share Direct holdings after: 971 shares +3 more

6 metrics

Shares sold 8,000 shares Open-market sales on June 1, 2026

Price range $162.08–$172.28 per share Weighted average prices across multiple trades

Direct holdings after 971 shares Common stock held directly after transactions

Indirect holdings after 208,031 shares Common stock held indirectly by family trust after trades

Largest reported average price $171.7154 per share One of the weighted average sale prices

Smallest reported average price $162.2778 per share One of the weighted average sale prices

Key Terms

Rule 10b5-1 trading plan, weighted average price, family trust, open-market sale

4 terms

Rule 10b5-1 trading plan regulatory

"This sale was effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

family trust financial

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

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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Form 4 Insider Transactions: What Each Field Means →

06/03/2026 - 07:16 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

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)
06/01/2026

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	06/01/2026		S⁽¹⁾		302	D	$162.2778⁽²⁾	208,031	I	by Trust⁽³⁾
Common Stock	06/01/2026		S⁽¹⁾		52	D	$164.484⁽⁴⁾	207,979	I	by Trust⁽³⁾
Common Stock	06/01/2026		S⁽¹⁾		81	D	$165.8915⁽⁵⁾	207,898	I	by Trust⁽³⁾
Common Stock	06/01/2026		S⁽¹⁾		916	D	$166.7576⁽⁶⁾	206,982	I	by Trust⁽³⁾
Common Stock	06/01/2026		S⁽¹⁾		1,467	D	$167.6968⁽⁷⁾	205,515	I	by Trust⁽³⁾
Common Stock	06/01/2026		S⁽¹⁾		1,271	D	$168.9189⁽⁸⁾	204,244	I	by Trust⁽³⁾
Common Stock	06/01/2026		S⁽¹⁾		1,092	D	$169.7858⁽⁹⁾	203,152	I	by Trust⁽³⁾
Common Stock	06/01/2026		S⁽¹⁾		1,413	D	$170.8665⁽¹⁰⁾	201,739	I	by Trust⁽³⁾
Common Stock	06/01/2026		S⁽¹⁾		1,406	D	$171.7154⁽¹¹⁾	200,333	I	by Trust⁽³⁾
Common Stock								971	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 $162.08 to $163.00, 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 $164.00 to $164.99, 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 $165.29 to $166.25, 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 $166.29 to $167.26, 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.

7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.30 to $168.26, 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.

8. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $168.31 to $169.30, 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.

9. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $169.32 to $170.31, 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.

10. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $170.32 to $171.31, 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.

11. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $171.32 to $172.28, 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.

	By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Charles Giancarlo	06/03/2026
	** 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

FAQ

What did Arista Networks (ANET) director Charles H. Giancarlo report on this Form 4?

He reported that a family trust associated with him sold 8,000 shares of Arista Networks common stock on June 1, 2026. These were open-market sales executed under a pre-arranged Rule 10b5-1 trading plan rather than spontaneous trades.

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

The Form 4 shows aggregate sales of 8,000 common shares. The filing states weighted average sale prices across multiple trades with price ranges spanning from $162.08 to $172.28 per share, reflecting numerous small transactions within those bands.

Who actually holds the Arista Networks (ANET) shares involved in these transactions?

The shares are held by a family trust for which Charles H. Giancarlo serves as co-trustee. The transactions are therefore attributed to this trust, with the Form 4 explaining that the trust, not just Giancarlo personally, is the direct owner of the sold shares.

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

Yes. A footnote states the sale was effected under a Rule 10b5-1 trading plan entered into on June 12, 2025. Such plans pre-schedule trades, meaning the timing of these sales was determined in advance rather than decided opportunistically.

How many Arista Networks (ANET) shares does Charles H. Giancarlo report owning after the sale?

After the reported sales, he reports 971 shares of common stock held directly. He also reports 208,031 shares held indirectly through the family trust. These post-transaction balances are disclosed in the Form 4’s ownership columns for direct and indirect holdings.