[Form 4] Arista Networks Insider Trading Activity

Rhea-AI Filing Summary

Arista Networks director and CTO Kenneth Duda reported multiple non‑derivative transactions on Form 4 dated 08/29/2025, disclosing transfers among related trusts and entities. The filing shows 125,930 shares were acquired into a family trust aggregation (125,930 A) and multiple dispositions of 62,965 and 12,976 share line items, with a total beneficial ownership reported as 687,035 shares via a family trust and additional holdings: 1,207,168 shares by a children’s trust and 572,400 shares held by a 501(c) foundation.

The explanations state these transfers originated from GRATs (grantor retained annuity trusts) of the reporting person and spouse, with the reporting person or spouse acting as trustees or co‑trustees. Transactions are reported at $0.0 price, indicating transfers rather than open‑market purchases or sales. The form is signed by an attorney‑in‑fact on behalf of Mr. Duda.

Positive

• Transparency of estate planning transfers is provided through detailed Form 4 disclosures
• Large holdings remain within related trusts and a foundation, with 687,035, 1,207,168, and 572,400 share lines disclosed
• All transfers reported at $0.0, indicating they were internal transfers rather than market sales

Negative

• None.

Insights

Financial Analyst

TL;DR: Insider moved shares among estate and charitable vehicles; no open‑market trades or cash proceeds reported.

The Form 4 documents internal transfers of Arista Networks common stock totaling 125,930 shares moved into a family trust aggregate and other holdings placed into family, children’s and foundation trusts. All transactions show a price of $0.0, consistent with intra‑family or trust transfers rather than market sales, so immediate market liquidity impact appears minimal. The filing clarifies trustee roles for the reporting person and spouse, which is relevant for governance of those shares but does not indicate dilution, option exercises, or financing changes.

Corporate Governance Expert

TL;DR: Transfers reflect estate planning and charitable structuring; disclosure clarifies voting and beneficial relationships.

The explanations identify GRATs as sources and list the reporting person or spouse as trustees or co‑trustees for the receiving entities, including a 501(c) foundation and a children’s trust. The filer disclaims beneficial ownership for certain child‑benefit trust shares while noting shared voting and investment control, which is a material governance disclosure for shareholder records. These steps are typical estate planning moves and are properly reported under Section 16.

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)
	CTO and SVP Software Eng.

3. Date of Earliest Transaction (Month/Day/Year)
08/29/2025

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	08/29/2025		J(1)		62,965	D	$0.0	687,035	I	By GRAT JD(2)
Common Stock	08/29/2025		J(3)		62,965	D	$0.0	687,035	I	By GRAT KD(4)
Common Stock	08/29/2025		J(5)		125,930	A	$0.0	159,303	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 62,965 shares transferred to the Family Trust from the GRAT of the Reporting Person's spouse.

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

3. Represents 62,965 shares transferred to the Family Trust from the GRAT of the Reporting Person.

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

5. Represents an aggregate of 125,930 shares transferred by the GRAT of the reporting person (62,965) and the GRAT of the reporting person's spouse (62,965) to the Family Trust.

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	09/02/2025
	** 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 reports transfers on 08/29/2025 moving shares among GRATs, a family trust, a children’s trust, and a 501(c) foundation, including an aggregate 125,930 share transfer.

Were any open‑market purchases or sales reported by Kenneth Duda?

No. All transactions list a price of $0.0, indicating transfers between trusts or entities rather than open‑market trades.

How many shares does the Form 4 show as held by trusts or foundations?

The filing lists 687,035 shares via a family trust, 1,207,168 shares by a children’s trust, and 572,400 shares held by a 501(c) foundation.

Who serves as trustee for the transferred shares?

The explanations state the reporting person or the reporting person’s spouse serve as trustee or co‑trustee; the spouse is trustee of the Jennifer Duda Annuity Trusts and the reporting person is trustee of the Kenneth Duda Annuity Trusts.

Who signed the Form 4 on behalf of Kenneth Duda?

The form was signed by Isabelle Bertin‑Bailly, Attorney‑in‑Fact, for Kenneth Duda on 09/02/2025.