[Form 4] Arista Networks Insider Trading Activity

Rhea-AI Filing Summary

Arista Networks (ANET) director and President/CTO Kenneth Duda reported multiple transfers of common stock on Form 4 dated 09/08/2025. The filing shows contributions of 75,000 shares to a grantor retained annuity trust (GRAT) for Mr. Duda and 75,000 shares to a GRAT for his spouse, recorded as acquisitions (code J) with no cash price. An aggregate of 150,000 shares was contributed to those GRATs.

The form also reports a disposition of 150,000 shares (code J) and various indirect beneficial ownership positions: 762,035 shares held via GRATs, 1,207,168 shares held by a children’s trust, 572,400 shares held by a 501(c) foundation, and 12,976 shares listed as disposed. The explanations identify roles: Mr. Duda and his spouse serve as trustees or co-trustees for several of these holdings.

Positive

• Continued substantial indirect ownership is disclosed: 1,207,168 shares via a children’s trust and 572,400 shares via a foundation, indicating retained family/foundation stakes.
• Use of GRATs for 150,000 shares (two 75,000-share contributions) suggests structured estate-planning rather than open-market divestiture.

Negative

• Reported disposition of 150,000 shares on 09/08/2025 (code J) reduces the reporting person’s immediately reportable position in the named trust to 9,303 shares.
• Multiple transfers among related trusts and entities can complicate the transparency of direct beneficial ownership and voting control for outside investors.

Insights

Financial Analyst

TL;DR: Insider reported estate-planning transfers and a 150,000-share disposition; substantial indirect holdings remain with family trusts and a foundation.

The filing records tax- and estate-planning transactions rather than open-market purchases or sales for cash. Two 75,000-share transfers into GRATs and an aggregate 150,000-share contribution are recorded as acquisitions under Rule 16b-3 codes, while a separate 150,000-share disposition is reported with zero price, consistent with internal trust transfers. Material indirect ownership remains: 762,035 shares via GRATs, 1,207,168 shares via a children’s trust, and 572,400 via a foundation. For investors, these are governance and ownership-structure updates rather than signals of open-market liquidity events.

Corporate Governance Expert

TL;DR: Transactions reflect fiduciary trust movements and co-trustee roles; no direct indication of change to executive operational control.

The disclosures emphasize Mr. Duda’s roles as trustee or co-trustee and transfers between family trusts, GRATs, and a foundation. The reporting clarifies nature of indirect ownership and disclaims beneficial ownership in at least one children’s trust. These moves are typical estate-planning actions and affect the distribution of voting and investment control among related entities. They are material to ownership records but do not by themselves indicate operational governance change.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Duda Kenneth

(Last) (First) (Middle)

5453 GREAT AMERICA PARKWAY

(Street)

SANTA CLARA CA 95054

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Arista Networks, Inc. [ ANET ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CTO

3. Date of Earliest Transaction (Month/Day/Year)
09/08/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/08/2025		J(1)		75,000	A	$0.0	762,035	I	By GRAT JD(2)
Common Stock	09/08/2025		J(3)		75,000	A	$0.0	762,035	I	By GRAT KD(4)
Common Stock	09/08/2025		J(5)		150,000	D	$0.0	9,303	I	by Trust(6)
Common Stock								12,976	D
Common Stock								1,207,168	I	By Childrens' Trust(7)
Common Stock								572,400	I	By Foundation(8)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents 75,000 shares transferred from the Family Trust to the GRAT of the Reporting Persons spouse.

2. Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.

3. Represents 75,000 shares transferred from the Family Trust to the GRAT of the Reporting Person.

4. Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

5. Represents an aggregate of 150,000 shares contributed to the GRAT of the Reporting Person (75,000 shares), and GRAT of the Reporting Person's spouse (75,000 shares)

6. These shares are held by a family trust for which the reporting person is co-trustee.

7. These shares are held in a trust for the benefit of a Child of the reporting person for which the reporting person serves as co-trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.

8. These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

	By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda	09/10/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transactions did Kenneth Duda report on Form 4 for ANET?

The filing shows transfers on 09/08/2025 including two 75,000-share contributions to GRATs (aggregate 150,000 shares) and a reported disposition of 150,000 shares; several trust holdings are listed.

How many ANET shares does Kenneth Duda indirectly control after the transactions?

The Form 4 lists indirect holdings including 762,035 shares via GRATs, 1,207,168 shares via a children’s trust, and 572,400 shares via a 501(c) foundation as disclosed in the filing.

Were any open-market purchases or cash sales reported in this Form 4?

No. The transactions are coded as transfers among trusts (code J) with a reported price of $0.0, indicating internal transfers rather than open-market cash trades.

What roles does Kenneth Duda hold that relate to these transfers?

The filing identifies Mr. Duda as a Director and as President and CTO, and indicates he and his spouse serve as trustees or co-trustees for the various trusts mentioned.

Does the Form 4 indicate any change in executive control or employment status?

No. The disclosure documents ownership transfers and trustee roles but does not state any change in Mr. Duda’s executive position or control responsibilities.