Family trusts sell Arista Networks shares in 10b5-1 plan

Q: What insider stock transaction did Arista Networks (ANET) report for CEO Jayshree Ullal?

Arista Networks reported that family trusts associated with CEO Jayshree Ullal sold 234,578 shares of Common Stock on July 10, 2026. These were open-market sales executed at a weighted average price of $187.1756 per share under a pre-arranged Rule 10b5-1 plan.

Q: At what price were the Arista Networks (ANET) shares sold in the reported insider transactions?

The reported sales occurred at a weighted average price of $187.1756 per share. According to the disclosure, individual trades were executed at prices ranging from $187.00 to $187.42, and full trade-by-trade price details are available on request from the company or the SEC.

Q: Who holds the Arista Networks (ANET) shares involved in the reported insider sales?

The sold shares were held by family trusts for the benefit of the CEO’s children and other relatives. Jayshree Ullal serves as trustee or co-trustee and, for certain trusts, disclaims beneficial ownership while sharing voting and investment control over those Arista Networks shares.

Q: How many Arista Networks (ANET) shares did the family trusts hold after the reported sales?

After the sales, one family trust held 17,155,010 Arista Networks shares, and each of two children’s trusts held 5,134,207 shares. Additional trusts for a niece and nephew held 30,000 shares each, while Jayshree Ullal also held 9,917 shares directly.

Arista Networks, Inc. CEO and Chairperson Jayshree Ullal reported indirect open-market sales totaling 234,578 shares of Common Stock on July 10, 2026 at a weighted average price of $187.1756 per share.

Filing Impact

(Very High)

Filing Sentiment

(Very Negative)

Form Type

Rhea-AI Filing Summary

Arista Networks, Inc. CEO and Chairperson Jayshree Ullal reported indirect open-market sales totaling 234,578 shares of Common Stock on July 10, 2026 at a weighted average price of $187.1756 per share. The shares were sold by family trusts for her children and other relatives, where she serves as trustee or co-trustee and in some cases disclaims beneficial ownership, under a Rule 10b5-1 trading plan adopted on November 14, 2025. Following the transactions, one family trust held 17,155,010 shares and each of two children’s trusts held 5,134,207 shares, with additional smaller positions of 30,000-share trusts for a niece and nephew and 9,917 shares held directly.

Insights

Analyzing...

Insider Trade Summary 10b5-1

Net Seller: 234,578 shares

Net Sell 6 txns

Insider Ullal Jayshree

Role CEO and Chairperson

Sold 234,578 shs ($43.91M)

Type	Security	Shares	Price	Value
Sale	Common Stock ^{F1, F2, F3}	36,888	$187.1756	$6.90M
Sale	Common Stock ^{F1, F2, F3}	36,888	$187.1756	$6.90M
Sale	Common Stock ^{F4, F2, F5}	160,802	$187.1756	$30.10M
holding	Common Stock	--	--	--
holding	Common Stock ^F6	--	--	--
holding	Common Stock ^F6	--	--	--

Holdings After Transaction: Common Stock — 5,134,207 shares (Indirect, By Trust for Child 1); Common Stock — 5,134,207 shares (Indirect, By Trust for Child 2); Common Stock — 17,155,010 shares (Indirect, by Trust); Common Stock — 9,917 shares (Direct); Common Stock — 30,000 shares (Indirect, By Trust for Nephew); Common Stock — 30,000 shares (Indirect, By Trust for Niece)

Footnotes (6)

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 $187.00 to $187.42, 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 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.
F5. These shares are held by a family trust for which the reporting person is co-trustee.
F6. 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

Shares sold: 234,578 shares Weighted average sale price: $187.1756 per share Family trust holdings after sale: 17,155,010 shares +3 more

6 metrics

Shares sold 234,578 shares Total Common Stock sold in open-market transactions on July 10, 2026

Weighted average sale price $187.1756 per share Average price across multiple trades between $187.00 and $187.42

Family trust holdings after sale 17,155,010 shares Common Stock held by a family trust after the reported transactions

Child 1 trust holdings after sale 5,134,207 shares Common Stock held by trust for Child 1 after the reported transactions

Child 2 trust holdings after sale 5,134,207 shares Common Stock held by trust for Child 2 after the reported transactions

Direct holdings after transactions 9,917 shares Common Stock held directly by the reporting person after July 10, 2026

Key Terms

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

4 terms

Rule 10b5-1 trading plan regulatory

"The sale of shares was effected 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.

disclaims beneficial ownership financial

"shares but disclaims beneficial ownership of the shares"

co-trustee financial

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

FAQ

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

What insider stock transaction did Arista Networks (ANET) report for CEO Jayshree Ullal?

Arista Networks reported that family trusts associated with CEO Jayshree Ullal sold 234,578 shares of Common Stock on July 10, 2026. These were open-market sales executed at a weighted average price of $187.1756 per share under a pre-arranged Rule 10b5-1 plan.

At what price were the Arista Networks (ANET) shares sold in the reported insider transactions?

The reported sales occurred at a weighted average price of $187.1756 per share. According to the disclosure, individual trades were executed at prices ranging from $187.00 to $187.42, and full trade-by-trade price details are available on request from the company or the SEC.

Were the Arista Networks (ANET) insider sales made under a Rule 10b5-1 trading plan?

Yes. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan. The plan was adopted by the reporting person on November 14, 2025 for the benefit of relatives, indicating the transactions were pre-scheduled rather than discretionary trades.

Who holds the Arista Networks (ANET) shares involved in the reported insider sales?

The sold shares were held by family trusts for the benefit of the CEO’s children and other relatives. Jayshree Ullal serves as trustee or co-trustee and, for certain trusts, disclaims beneficial ownership while sharing voting and investment control over those Arista Networks shares.

How many Arista Networks (ANET) shares did the family trusts hold after the reported sales?

After the sales, one family trust held 17,155,010 Arista Networks shares, and each of two children’s trusts held 5,134,207 shares. Additional trusts for a niece and nephew held 30,000 shares each, while Jayshree Ullal also held 9,917 shares directly.

Does Jayshree Ullal beneficially own all Arista Networks (ANET) shares held in the reported trusts?

No. For certain trusts, the filing notes that the shares are held for the benefit of relatives and that Ullal disclaims beneficial ownership. She serves as trustee or co-trustee and shares voting and investment control but does not claim full economic ownership of those positions.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 07/14/2026 - 06:55 PM

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)
07/10/2026

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	07/10/2026		S⁽¹⁾		36,888	D	$187.1756⁽²⁾	5,134,207	I	By Trust for Child 1⁽³⁾
Common Stock	07/10/2026		S⁽¹⁾		36,888	D	$187.1756⁽²⁾	5,134,207	I	By Trust for Child 2⁽³⁾
Common Stock	07/10/2026		S⁽⁴⁾		160,802	D	$187.1756⁽²⁾	17,155,010	I	by Trust⁽⁵⁾
Common Stock								9,917	D
Common Stock								30,000	I	By Trust for Nephew⁽⁶⁾
Common Stock								30,000	I	By Trust for Niece⁽⁶⁾

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 $187.00 to $187.42, 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 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.

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

6. 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	07/14/2026
	** 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