[144] Arista Networks, Inc. SEC Filing

Rhea-AI Filing Summary

Form 144 notice for Arista Networks (ANET) discloses a proposed sale of 30,000 common shares through J.P. Morgan Securities (scheduled approx. 09/17/2025) with an aggregate market value listed as $4,264,800 and 1,256,865,381 shares outstanding. The shares were recorded as acquired by gift on 12/29/2021 from Kenneth Duda. The filing also lists recent sales by related parties during June–August 2025: three monthly sales of 30,000 shares by Kenneth Duda (gross proceeds of $2,766,894, $3,335,757, and $4,095,195) and multiple trust/foundation sales of 8,000–10,000 shares each month with listed gross proceeds.

Positive

• Clear, compliant disclosure of proposed sale details including broker, quantity, market value, and outstanding shares
• Historical sales listed with gross proceeds for transparency about recent insider liquidity

Negative

• Insider and affiliated-party sales occurred over three months (June–August 2025), indicating material insider dispositions
• No 10b5-1 plan date provided in the form, so sales do not appear accompanied by an explicit trading-plan disclosure in this filing

Insights

Securities/Equity Analyst

TL;DR: Routine insider sale notice showing staged dispositions by an insider and related trusts with disclosed proceeds.

The filing is a standard Rule 144 notice registering a proposed sale of 30,000 Arista Networks common shares via J.P. Morgan Securities and documents prior monthly sales by the same insider and affiliated trusts in June–August 2025. The disclosure identifies the acquisition as a gift on 12/29/2021, which is relevant to holding-period eligibility under Rule 144. The listed aggregate market value ($4,264,800) and gross proceeds for past sales provide transparent details on recent insider liquidity. From a trading-impact perspective, the incremental quantities (tens of thousands of shares) are small relative to the reported outstanding share count (1,256,865,381), suggesting limited market-disruption risk but clear insider disposition activity.

Corporate Governance Expert

TL;DR: Proper compliance disclosure of insider sales and representation about nonpublic material information.

The filer has completed the Rule 144 notice with broker and acquisition details and includes the required representation that the seller is unaware of undisclosed material adverse information. The listing of multiple related-party sales (insider, two trusts, and a foundation) across three months shows systematic dispositions that stakeholders may monitor for governance context. The form contains no statements about any trading plan adoption under Rule 10b5-1, and no other governance events are disclosed.

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 360 Madison Avenue - 6th Floor New York NY 10017	30000	4264800	1256865381	09/17/2025	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	12/29/2021	Gift	Kenneth Duda		11/01/2004	30000	12/29/2021	NA

* 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
Kenneth Duda C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	06/17/2025	30000	2766894
Kenneth Duda C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	07/17/2025	30000	3335757
Kenneth Duda C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	08/18/2025	30000	4095195
Molly Hsu-Mei Duda 2017 Trust C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	06/17/2025	8000	737838.4
Molly Hsu-Mei Duda 2017 Trust C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	07/17/2025	8000	889535.2
Molly Hsu-Mei Duda 2017 Trust C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	08/18/2025	8000	1092052
Sophie Hsu-Tsen Duda 2017 Trust C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	06/17/2025	8000	737838.4
Sophie Hsu-Tsen Duda 2017 Trust C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	07/17/2025	8000	889535.2
Sophie Hsu-Tsen Duda 2017 Trust C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	08/18/2025	8000	1092052
Foundation for Truth, Justice, and Compassion C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	06/17/2025	10000	922298
Foundation for Truth, Justice, and Compassion C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	07/17/2025	10000	1111919
Foundation for Truth, Justice, and Compassion C/O Issuer 5453 Great America Parkway Santa Clara CA 95054	Common	08/18/2025	10000	1365065

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 filed for ANET disclose?

The Form 144 discloses a proposed sale of 30,000 Arista Networks common shares via J.P. Morgan Securities (approximate sale date 09/17/2025) and documents prior June–August 2025 sales by related parties with listed gross proceeds.

Who acquired the shares being sold and when were they acquired?

The shares were recorded as acquired by gift on 12/29/2021 from Kenneth Duda.

How many shares are outstanding according to the filing?

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

What recent insider sales are listed in the filing?

Kenneth Duda sold 30,000 shares each on 06/17/2025, 07/17/2025, and 08/18/2025 with gross proceeds of $2,766,894, $3,335,757, and $4,095,195, respectively; related trusts and a foundation made smaller monthly sales in the same periods.

Does the filing state whether a 10b5-1 plan was used?

No date of plan adoption or trading-instruction date under Rule 10b5-1 is provided in this Form 144.