Arista Networks’ Ullal proposes $97.6M share sale

The notice also lists a past-three-month sale of 1,099,495 shares on August 5, 2026.

Rhea-AI Filing Summary

Arista Networks, Inc. (ANET) is identified as the issuer in a Form 144 notice for officer and director Jayshree Ullal’s proposed sale of 460,374 common shares through Fidelity Brokerage Services. The listed aggregate market value is $97,642,609.19; the approximate sale date is October 6, 2026, and the stated exchange is NYSE.

Key Figures

Proposed sale: 460,374 shares Aggregate market value: $97,642,609.19 Past-three-month sale: 1,099,495 shares +1 more

4 metrics

Proposed sale 460,374 shares Common stock; approximate sale date October 6, 2026

Aggregate market value $97,642,609.19 Proposed sale of common stock

Past-three-month sale 1,099,495 shares August 5, 2026

Aggregate market value $221,239,724.20 Past-three-month sale listed for August 5, 2026

Key Terms

Rule 144, Stock Option Exercise, aggregate market value

3 terms

Rule 144 regulatory

"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.

Stock Option Exercise financial

"Stock Option Exercise"

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.

aggregate market value financial

"Aggregate market value"

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.

FAQ

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

What share sale does Jayshree Ullal’s ANET Form 144 notice list?

It lists a proposed sale of 460,374 Arista common shares, with an aggregate market value of $97,642,609.19. The approximate sale date is October 6, 2026, through Fidelity Brokerage Services, on NYSE.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/06/2026 - 04:11 PM Accepted by SEC EDGAR 10/06/2026 - 04:11 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	0001605809
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	Ullal Jayshree
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
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 Stock	Fidelity Brokerage Services LLC 245 Summer Street Boston MA 02110	460374	97642609.19	1261224648	10/06/2026	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 Stock	09/22/2008	Stock Option Exercise	Issuer			460374	09/22/2008	Wire

* 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
Jayshree Ullal C/O Arista Networks, Inc. 5453 GREAT AMERICA PARKWAY Santa Clara CA 95054	Common Stock	07/09/2026	242422	45616262.39
Jayshree Ullal C/O Arista Networks, Inc. 5453 GREAT AMERICA PARKWAY, Santa Clara CA 95054	Common Stock	07/10/2026	234578	43907277.00
Jayshree Ullal C/O Arista Networks, Inc. 5453 GREAT AMERICA PARKWAY Santa Clara CA 95054	Common Stock	08/05/2026	1099495	221239724.20
Jayshree Ullal C/O Arista Networks, Inc. 5453 GREAT AMERICA PARKWAY, Santa Clara CA 95054	Common Stock	08/12/2026	573509	119364084.06
Jayshree Ullal C/O Arista Networks, Inc. 5453 GREAT AMERICA PARKWAY Santa Clara CA 95054	Common Stock	08/25/2026	13809	2648491.63
Jayshree Ullal C/O Arista Networks, Inc. 5453 GREAT AMERICA PARKWAY, Santa Clara CA 95054	Common Stock	09/25/2026	62622	13238021.53

144: Remarks and Signature

Remarks	65,765 shares sold from The Tarini Ullal Trust. 65,765 shares sold from The Adeeti Ullal Trust. 328,844 shares sold from The 2000 Ullal Family Trust
Date of Notice	10/06/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/14/2025
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	Audrey Skillern, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Jayshree Ullal
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)