Arista Networks CEO trusts sell 158,543 shares

Q: What ANET shares were listed in trusts for Jayshree Ullal's relatives?

As of October 8, 2026, the listed holdings included 25,000 common shares each in a trust for a nephew and a trust for a niece. Ullal served as co-trustee and shared voting and investment control over those shares, while disclaiming beneficial ownership.

The CEO and Chairperson's reported sales were made under a Rule 10b5-1 plan adopted November 14, 2025, for relatives' benefit.

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Rhea-AI Filing Summary

Arista Networks, Inc. CEO and Chairperson Jayshree Ullal reported that trusts for her children and a family trust for which she is co-trustee sold 158,543 common shares on October 8 and 9, 2026. The reported weighted-average prices were $217.0483 on October 8 and $217.0958 on October 9. The sales were made under a Rule 10b5-1 trading plan adopted by Ullal on November 14, 2025, for the benefit of relatives. For the child-benefit trusts, Ullal shared voting and investment control and disclaimed beneficial ownership.

Insights

Analyzing...

Insider Trade Summary 10b5-1

Net Seller: 158,543 shares

Net Sell 9 txns

Insider Ullal Jayshree

Role CEO and Chairperson

Sold 158,543 shs ($34.42M)

Type	Security	Shares	Price	Value
Sale	Common Stock ^{F1, F4, F3}	18,656	$217.0958	$4.05M
Sale	Common Stock ^{F1, F4, F3}	18,656	$217.0958	$4.05M
Sale	Common Stock ^{F5, F4, F6}	93,241	$217.0958	$20.24M
Sale	Common Stock ^{F1, F2, F3}	4,000	$217.0483	$868K
Sale	Common Stock ^{F1, F2, F3}	4,000	$217.0483	$868K
Sale	Common Stock ^{F5, F2, F6}	19,990	$217.0483	$4.34M
holding	Common Stock	--	--	--
holding	Common Stock ^F7	--	--	--
holding	Common Stock ^F7	--	--	--

Holdings After Transaction: Common Stock — 4,774,691 shares (Indirect, By Trust for Child 1); Common Stock — 4,774,691 shares (Indirect, By Trust for Child 2); Common Stock — 15,432,507 shares (Indirect, by Trust); Common Stock — 9,917 shares (Direct); Common Stock — 25,000 shares (Indirect, By Trust for Nephew); Common Stock — 25,000 shares (Indirect, By Trust for Niece)

Footnotes (7)

F1. The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's relatives on November 14, 2025.
F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $217.00 to $217.215, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F3. These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.
F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $217.00 to $217.35, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F5. The exercises and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2025.
F6. These shares are held by a family trust for which the reporting person is co-trustee.
F7. These shares are held in trust for the benefit of relatives 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.

Key Figures

Common shares sold: 158,543 shares Weighted-average sale price: $217.0483 per share Weighted-average sale price: $217.0958 per share +3 more

6 metrics

Common shares sold 158,543 shares Reported sales on October 8 and 9, 2026

Weighted-average sale price $217.0483 per share October 8, 2026

Weighted-average sale price $217.0958 per share October 9, 2026

Direct common-stock holdings 9,917 shares Listed as of October 8, 2026

Common-stock holdings in trust for nephew 25,000 shares Listed as of October 8, 2026

Common-stock holdings in trust for niece 25,000 shares Listed as of October 8, 2026

Key Terms

Rule 10b5-1 trading plan, weighted average price, beneficial ownership

3 terms

Rule 10b5-1 trading plan regulatory

"pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

beneficial ownership financial

"disclaims beneficial ownership of the shares"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

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

How many ANET shares did Jayshree Ullal's trusts sell?

Trusts for relatives of Arista Networks CEO and Chairperson Jayshree Ullal sold 158,543 common shares on October 8 and 9, 2026. The reported weighted-average prices were $217.0483 on October 8 and $217.0958 on October 9. The sales were made under a Rule 10b5-1 plan adopted November 14, 2025.

What ANET shares were listed in trusts for Jayshree Ullal's relatives?

As of October 8, 2026, the listed holdings included 25,000 common shares each in a trust for a nephew and a trust for a niece. Ullal served as co-trustee and shared voting and investment control over those shares, while disclaiming beneficial ownership.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/13/2026 - 07:10 PM EDT Accepted by SEC EDGAR 10/13/2026 - 07:09 PM EDT

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Ullal Jayshree

(Last)

(First)

(Middle)

5453 GREAT AMERICA PARKWAY

(Street)

SANTA CLARA

CALIFORNIA

95054

(City)

(State)

(Zip)

UNITED STATES

(Country)

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)
	CEO and Chairperson

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/08/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	10/08/2026		S⁽¹⁾		4,000	D	$217.0483⁽²⁾	4,793,347	I	By Trust for Child 1⁽³⁾
Common Stock	10/09/2026		S⁽¹⁾		18,656	D	$217.0958⁽⁴⁾	4,774,691	I	By Trust for Child 1⁽³⁾
Common Stock	10/08/2026		S⁽¹⁾		4,000	D	$217.0483⁽²⁾	4,793,347	I	By Trust for Child 2⁽³⁾
Common Stock	10/09/2026		S⁽¹⁾		18,656	D	$217.0958⁽⁴⁾	4,774,691	I	By Trust for Child 2⁽³⁾
Common Stock	10/08/2026		S⁽⁵⁾		19,990	D	$217.0483⁽²⁾	15,525,748	I	by Trust⁽⁶⁾
Common Stock	10/09/2026		S⁽⁵⁾		93,241	D	$217.0958⁽⁴⁾	15,432,507	I	by Trust⁽⁶⁾
Common Stock								9,917	D
Common Stock								25,000	I	By Trust for Nephew⁽⁷⁾
Common Stock								25,000	I	By Trust for Niece⁽⁷⁾

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's relatives on November 14, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $217.00 to $217.215, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $217.00 to $217.35, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

5. The exercises and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2025.

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

7. These shares are held in trust for the benefit of relatives 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.

	By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Jayshree Ullal	10/13/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR