[144] Arista Networks, Inc. SEC Filing

Rhea-AI Filing Summary

Arista Networks (ANET) Form 144 notifies a proposed sale of 82,000 common shares through J.P. Morgan Securities LLC with an aggregate market value of 12,026,120. The filing lists 1,256,865,381 shares outstanding and an approximate sale date of 09/19/2025. Acquisition history for the shares shows a 50,000 lot from a 06/09/2025 stock option exercise (Giancarlo Family Trust), 844 shares from RSU vesting on 08/20/2024, and 31,156 from a 03/12/2014 option exercise. The filer certifies no undisclosed material adverse information and reports no sales in the past three months.

Positive

• Full disclosure of proposed sale including broker, share counts, and aggregate market value
• Acquisition provenance provided for each lot (dates and transaction types: option exercises and RSU vesting)
• Certification that the filer does not possess undisclosed material adverse information

Negative

• Proposed sale of 82,000 shares with an aggregate value of 12,026,120, which represents a meaningful dollar amount (reported figure)
• No information in the filing about whether the sale is part of a trading plan (no plan date provided)

Insights

Financial Analyst

TL;DR Routine insider sale notice of 82,000 Arista shares, disclosed under Rule 144 with specified acquisition dates and broker details.

The filing is a standard Rule 144 notice documenting a proposed sale rather than a completed transaction. It provides clear line items: share count, aggregate market value, broker name, and acquisition provenance by lot and date. For investors this is informational about potential insider liquidity but contains no operational or financial performance data. The absence of recent sales in the past three months is explicitly noted.

Corporate Governance Expert

TL;DR Proper compliance filing showing provenance of shares and a signature representation about material nonpublic information.

The submission includes acquisition details (option exercises and RSU vesting) and a certification that the seller is unaware of undisclosed material adverse information, which aligns with Rule 144 disclosure practices. The use of a reputable broker and the explicit listing of outstanding shares and aggregate value support transparency. No governance irregularities or unusual disclosures appear in the document itself.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	J.P. Morgan Securities LLC 390 Madison Avenue 6th Floor New York NY 10017	82000	12026120	1256865381	09/19/2025	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	06/09/2025	Stock Option Exercise	The Giancarlo Family Trust UAD 11/02/98		05/20/2013	50000	06/09/2025	N/A
Common	08/20/2024	RSU Vesting	Charlie Giancarlo		08/20/2024	844	08/20/2024	N/A
Common	03/12/2014	Stock Option Exercise	Charlie Giancarlo		03/12/2014	31156	03/12/2014	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

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

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

The filing reports a proposed sale of 82,000 common shares through J.P. Morgan Securities LLC with an aggregate market value of 12,026,120 and an approximate sale date of 09/19/2025.

How many Arista shares are outstanding according to this filing?

The form lists 1,256,865,381 shares outstanding.

What is the acquisition history of the shares to be sold?

The filing shows 50,000 shares acquired via stock option exercise on 06/09/2025 (Giancarlo Family Trust), 844 from RSU vesting on 08/20/2024, and 31,156 from a 03/12/2014 option exercise.

Does the Form 144 state if there were sales in the past three months?

The filing explicitly states "Nothing to Report" for securities sold during the past three months.

Who is the broker handling the proposed sale?

The named broker is J.P. Morgan Securities LLC, 390 Madison Avenue, New York, NY.