[144] Arista Networks, Inc. SEC Filing

Rhea-AI Filing Summary

Arista Networks filing reports a proposed sale of 24,000 shares of Common Stock by an affiliate of Charlie Giancarlo through J.P. Morgan Securities LLC. The filing lists prior sales of 8,000 shares on 02/02/2026, 03/01/2026, and 04/01/2026 with reported beneficial holdings of 1,123,469, 1,029,372, and 1,007,603 respectively.

Insights

Corporate Governance Analyst

Disclosure records a planned resale by a family trust tied to an executive.

The filing shows the Giancarlo Family Trust is the selling party and lists a proposed sale of 24,000 shares through J.P. Morgan Securities. The entry notes these shares stem from a stock option exercise dated 03/12/2014.

Prior dispositions of 8,000 shares on 02/02/2026, 03/01/2026, and 04/01/2026 are recorded with corresponding beneficial-holdings balances. Timing and execution mechanics beyond the broker listing are not specified in the excerpt.

Key Figures

Proposed sale: 24,000 shares Prior dispositions: 8,000 shares Prior dispositions: 8,000 shares +4 more

7 metrics

Proposed sale 24,000 shares Form 144 proposed resale, listed with J.P. Morgan

Prior dispositions 8,000 shares Sold 02/02/2026

Prior dispositions 8,000 shares Sold 03/01/2026

Prior dispositions 8,000 shares Sold 04/01/2026

Beneficial holdings after 02/02/2026 sale 1,123,469 shares Reported balance after 02/02/2026 disposition

Beneficial holdings after 03/01/2026 sale 1,029,372 shares Reported balance after 03/01/2026 disposition

Beneficial holdings after 04/01/2026 sale 1,007,603 shares Reported balance after 04/01/2026 disposition

Key Terms

Form 144, Stock Option Exercise, Selling Broker

3 terms

Form 144 regulatory

"Securities To Be Sold and Securities Sold During The Past 3 Months"

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.

Stock Option Exercise financial

"03/12/2014 | Stock Option Exercise | Charlie Giancarlo"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Selling Broker market

"J.P. Morgan Securities LLC 270 Park Avenue 10th Floor"

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 270 Park Avenue 10th Floor New York NY 10017	24000	4145040	1256537906	05/01/2026	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	03/12/2014	Stock Option Exercise	Charlie Giancarlo			24000	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
The Giancarlo Family Trust UAD 11/02/98 5453 GREAT AMERICA PARKWAY SANTA CLARA CA 95054	Common	02/02/2026	8000	1123469
The Giancarlo Family Trust UAD 11/02/98 5453 GREAT AMERICA PARKWAY SANTA CLARA CA 95054	Common	03/01/2026	8000	1029372
The Giancarlo Family Trust UAD 11/02/98 5453 GREAT AMERICA PARKWAY SANTA CLARA CA 95054	Common	04/01/2026	8000	1007603

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 ANET Form 144 report?

The filing reports a proposed sale of 24,000 shares of Arista Networks common stock by the Giancarlo Family Trust. It identifies J.P. Morgan Securities LLC as the broker and references a prior option exercise dated 03/12/2014.

Who is the seller in the ANET Form 144?

The seller is the Giancarlo Family Trust UAD 11/02/98, an affiliate tied to Charlie Giancarlo. The trust is listed as the selling holder for the proposed 24,000-share resale through J.P. Morgan.

What prior sales are shown in the filing?

The filing shows three past dispositions of 8,000 shares each on 02/02/2026, 03/01/2026, and 04/01/2026. Each line includes a reported beneficial-holdings balance after the sale.

Does the Form 144 show how proceeds will be used?

No. The excerpt lists the selling broker and share counts but does not state any use of proceeds or whether the sales are pursuant to a prearranged plan. Execution mechanics are not provided in the excerpt.