Arista Networks insider plans sale of 573,509 shares

Arista Networks, Inc. insider Jayshree Ullal filed to sell common stock under Rule 144.

Rhea-AI Filing Summary

Arista Networks, Inc. insider Jayshree Ullal filed to sell common stock under Rule 144. The filing covers 573,509 shares of common stock, with an indicated aggregate market value of $119,364,084.06, to be sold through Fidelity Brokerage Services on or after August 5, 2026 on the NYSE. The shares relate to stock acquired from option exercises in 2008 and 2013. Over the past three months, Ullal reported several open-market sales of Arista Networks common stock in multiple tranches.

Key Figures

Shares to be sold: 573,509 shares Aggregate market value of planned sale: $119,364,084.06 Recent sale on 08/05/2026: 1,099,495 shares for $221,239,724.20 +5 more

8 metrics

Shares to be sold 573,509 shares Common stock covered by Rule 144 filing through Fidelity Brokerage Services

Aggregate market value of planned sale $119,364,084.06 Value associated with 573,509 Arista Networks common shares in Form 144

Recent sale on 08/05/2026 1,099,495 shares for $221,239,724.20 Common stock sale reported in the past three months section

Recent sale on 07/10/2026 234,578 shares for $43,907,277.00 Common stock sale reported in the past three months section

Recent sale on 07/09/2026 242,422 shares for $45,616,262.39 Common stock sale reported in the past three months section

Recent sale on 05/26/2026 13,809 shares for $2,141,003.98 Common stock sale reported in the past three months section

Option exercise 09/22/2008 399,401 shares Stock options exercise with issuer, settled by wire

Option exercise 12/31/2013 174,108 shares Stock options exercise with issuer, settled by wire

Key Terms

Form 144, Rule 144, Stock Options exercise, aggregate market value

4 terms

Form 144 regulatory

"144: Securities Information Common Stock | Fidelity Brokerage Services"

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.

Rule 144 regulatory

"144: Securities Information Common Stock | Fidelity Brokerage Services"

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 Options exercise financial

"Common Stock | 09/22/2008 | Stock Options exercise | Issuer"

aggregate market value financial

"Common Stock | Fidelity Brokerage Services LLC ... | 573509 | 119364084.06"

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 does Arista Networks (ANET) insider Jayshree Ullal’s Form 144 filing disclose?

The Form 144 discloses that Jayshree Ullal intends to sell 573,509 shares of Arista Networks common stock, with an indicated aggregate market value of $119,364,084.06, through Fidelity Brokerage Services on or after August 5, 2026.

How many Arista Networks (ANET) shares is Jayshree Ullal planning to sell?

The filing indicates a planned sale of 573,509 shares of Arista Networks common stock. These shares are associated with prior stock option exercises and are expected to be sold via Fidelity Brokerage Services on the NYSE beginning August 5, 2026.

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

The Form 144 lists an aggregate market value of $119,364,084.06 for the 573,509 shares of Arista Networks common stock covered by the planned Rule 144 sale, based on the pricing assumptions used in the filing.

What Arista Networks (ANET) stock sales has Jayshree Ullal reported in the past three months?

Over the past three months, Ullal reported multiple Arista Networks stock sales, including 13,809 shares for $2,141,003.98, 242,422 shares for $45,616,262.39, 234,578 shares for $43,907,277.00, and 1,099,495 shares for $221,239,724.20.

How were the Arista Networks (ANET) shares in Jayshree Ullal’s Form 144 originally acquired?

The filing indicates the shares relate to prior stock options exercise transactions with the issuer, including exercises dated September 22, 2008 for 399,401 shares and December 31, 2013 for 174,108 shares, settled by wire.

Which broker and exchange are involved in the planned Arista Networks (ANET) Rule 144 sale?

The planned sale of 573,509 shares of Arista Networks common stock is to be executed through Fidelity Brokerage Services LLC, with trades expected to occur on the NYSE beginning on or after August 5, 2026.

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

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Accepted by SEC EDGAR 08/12/2026 - 04:33 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	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	573509	119364084.06	1261224648	08/05/2026	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 Options exercise	Issuer			399401	09/22/2008	Wire
Common Stock	12/31/2013	Stock Options exercise	Issuer			174108	12/31/2013	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	05/26/2026	13809	2141003.98
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

144: Remarks and Signature

Remarks	82,570 Sold from the Tarini Ullal Trust 82,570 sold from the Adeeti Ullal Trust 399,401 sold from the 2000 Ullal Family Trust 4,484 sold from the The Ishan Nagpal Trust 4,484 sold from the The Shriya Nagpal Trust
Date of Notice	08/12/2026
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)