ANET: 2,448 RSUs Listed for Sale

Morgan Stanley Smith Barney LLC submitted a Form 144 notice relating to proposed sales of Common stock consisting of 2,448 Restricted Stock Units with an intended sale date of 05/20/2026.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC submitted a Form 144 notice relating to proposed sales of Common stock consisting of 2,448 Restricted Stock Units with an intended sale date of 05/20/2026. The filing also reports prior 10b5-1 sales of 8,890 shares on 04/14/2026.

Insights

Equity Capital Markets Analyst

Form 144 lists a scheduled RSU sale and recent 10b5-1 disposals.

The notice records 2,448 Restricted Stock Units proposed for sale on 05/20/2026. It also lists prior 10b5-1 sales of 8,890 shares on 04/14/2026, with reported proceeds of $1,378,164.45.

These filings are administrative notices of transactions by or on behalf of an insider; cash‑flow treatment and whether proceeds go to the issuer are not stated in the excerpt. Subsequent resale activity will depend on the holder's execution choices under the 10b5-1 plan.

Key Figures

Restricted Stock Units to be sold: 2,448 shares Recent 10b5-1 sales: 8,890 shares Proceeds reported (prior sale): $1,378,164.45 +1 more

4 metrics

Restricted Stock Units to be sold 2,448 shares Securities To Be Sold, 05/20/2026

Recent 10b5-1 sales 8,890 shares Securities Sold During The Past 3 Months, 04/14/2026

Proceeds reported (prior sale) $1,378,164.45 Associated with 8,890-share 10b5-1 sale on 04/14/2026

Value listed alongside 2,448 RSUs $377,065.44 Amount associated with the 2,448 RSUs entry in the excerpt

Key Terms

Form 144, Restricted Stock Units, 10b5-1

3 terms

Form 144 regulatory

"Securities To Be Sold — Restricted Stock Units listed for sale"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Units financial

"Securities To Be Sold | 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.

10b5-1 regulatory

"10b5-1 Sales for CHANTELLE BREITHAUPT ... 04/14/2026"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does ANET's Form 144 disclose about the upcoming sale?

It discloses a planned sale of 2,448 Restricted Stock Units with an intended sale date of 05/20/2026. The form lists the security type as Common and identifies the broker as Morgan Stanley Smith Barney LLC.

Did the filer report recent insider sales for ANET?

Yes; the filing reports prior 10b5-1 sales of 8,890 shares executed on 04/14/2026. The excerpt shows proceeds of $1,378,164.45 associated with that transaction.

Who is the selling party named in the Form 144?

The excerpt names Chantelle Breithaupt in connection with 10b5-1 sales and lists Morgan Stanley Smith Barney LLC as the broker handling the proposed resale on behalf of the holder.

Does the Form 144 indicate proceeds will go to the issuer (ANET)?

The filing excerpt does not state that the issuer will receive proceeds. It records a resale of restricted stock units and prior brokered 10b5-1 sales; proceeds recipient is not specified in the excerpt.

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

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Accepted by SEC EDGAR 05/26/2026 - 04:44 PM EDT 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	0001850596
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	4085475000
Name of Person for Whose Account the Securities are To Be Sold	CHANTELLE BREITHAUPT
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	Officer

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	2448	377065.44	1259202593	05/26/2026	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	05/20/2026	Restricted Stock Units	Issuer			2448	05/20/2026	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for CHANTELLE BREITHAUPT 5453 Great America Parkway Santa Clara CA 95054	Common	04/14/2026	8890	1378164.45

144: Remarks and Signature

Remarks
Date of Notice	05/26/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/11/2025
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/ Chantelle Yvette Breithaupt
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)