Arista director plans $3.9M stock sale in 2026

Director Mark Templeton filed a Rule 144 notice to potentially sell 20,000 Arista Networks common shares acquired from RSU vesting.

Rhea-AI Filing Summary

Arista Networks, Inc. is the issuer of common stock that director Mark Templeton has notified for potential sale under Rule 144. The notice covers 20,000 shares of common stock to be sold through Morgan Stanley Smith Barney LLC on the NYSE, with an aggregate market value of $3,875,600 based on the figures in the notice.

The shares relate to restricted stock units granted on May 20, 2020 and acquired upon vesting during the period from May 20, 2020 through May 20, 2026. The notice states that Arista Networks had 1,261,224,648 shares outstanding of the class as referenced in the filing, and lists an approximate sale date of September 8, 2026.

Key Figures

Shares to be sold: 20,000 shares Aggregate market value: $3,875,600 Shares outstanding: 1,261,224,648 shares +2 more

5 metrics

Shares to be sold 20,000 shares Common stock covered by Mark Templeton’s Rule 144 notice

Aggregate market value $3,875,600 Indicated value of the 20,000 shares subject to potential sale

Shares outstanding 1,261,224,648 shares Outstanding shares of the class referenced in the notice

Approximate sale date September 8, 2026 Planned date for potential NYSE sale under Rule 144

RSU grant/acquisition date May 20, 2020 Date of restricted stock units from which the shares were acquired

Key Terms

Rule 144, Restricted Stock Units, Aggregate market value, Securities to be sold

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Units financial

"Common | 05/20/2020 | Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Aggregate market value financial

"20000 | 3875600.00 | 1261224648 | 09/08/2026"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

Securities to be sold financial

"144: Securities To Be Sold"

FAQ

What does the Form 144 filing mean for Arista Networks (ANET)?

The filing reports that director Mark Templeton plans a potential Rule 144 sale of 20,000 shares of Arista Networks common stock. It is a notice of intent to sell restricted or control securities, not a confirmation that the sale has already occurred.

How many Arista Networks (ANET) shares does Mark Templeton plan to sell?

Mark Templeton filed to potentially sell 20,000 shares of Arista Networks common stock. The Rule 144 notice lists these shares with an indicated aggregate market value of $3,875,600 for the proposed sale.

What is the indicated value of the Arista Networks (ANET) shares in this Form 144?

The notice indicates an aggregate market value of $3,875,600 for the 20,000 shares of Arista Networks common stock covered by the planned Rule 144 sale.

When were the Arista Networks (ANET) shares to be sold originally acquired?

The securities to be sold were acquired through restricted stock units granted on May 20, 2020. The filing notes they were acquired upon vesting during the period from May 20, 2020 through May 20, 2026.

When is the approximate sale date for the Arista Networks (ANET) shares in this filing?

The Form 144 lists an approximate sale date of September 8, 2026 for the proposed sale of 20,000 Arista Networks common shares on the NYSE.

How many Arista Networks (ANET) shares are outstanding according to this Form 144?

The notice states that there were 1,261,224,648 shares of the relevant Arista Networks common stock class outstanding, as referenced in the securities information section.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/08/2026 - 04:30 PM Accepted by SEC EDGAR 09/08/2026 - 04:29 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001201938
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Arista Networks, Inc.
SEC File Number	001-36468
Address of Issuer	5453 Great America Parkway Santa Clara CALIFORNIA 95054
Phone	(408)-547-5500
Name of Person for Whose Account the Securities are To Be Sold	MARK TEMPLETON
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	20000	3875600.00	1261224648	09/08/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/20/2020	Restricted Stock Units	Issuer			20000	05/20/2020	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 05/20/2020 through 05/20/2026
Date of Notice	09/08/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/09/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Mark Templeton
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)