[Form 4] Arista Networks, Inc. Insider Trading Activity

Arista Networks CEO and Chairperson Jayshree Ullal reported pre-planned sales of Arista Networks, Inc. common stock through family trusts.

Rhea-AI Filing Summary

Arista Networks CEO and Chairperson Jayshree Ullal reported pre-planned sales of Arista Networks, Inc. common stock through family trusts. On April 20, 2026, trusts associated with Ullal sold a total of 306,139 shares in open-market transactions at a weighted average price of $167.312 per share, with individual trade prices ranging from $167.00 to $167.82. The transactions were carried out under a Rule 10b5-1 trading plan adopted on November 14, 2025 for the benefit of Ullal’s relatives.

After these sales, one family trust held 17,847,711 shares, another trust for a child held 5,287,287 shares, and trusts for a niece and nephew each held 30,000 shares. Ullal also held 9,917 shares directly. Footnotes state that some of these shares are held in trusts for relatives and children, where Ullal serves as trustee or co-trustee, shares voting and investment control, and disclaims beneficial ownership.

Insider Trade Summary 10b5-1

Net Seller: 306,139 shares

Net Sell 6 txns

Insider Ullal Jayshree

Role CEO and Chairperson

Sold 306,139 shs ($51.22M)

Type	Security	Shares	Price	Value
Sale	Common Stock	45,920	$167.312	$7.68M
Sale	Common Stock	45,920	$167.312	$7.68M
Sale	Common Stock	214,299	$167.312	$35.85M
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 5,287,287 shares (Indirect, By Trust for Child 1); Common Stock — 5,287,287 shares (Indirect, By Trust for Child 2); Common Stock — 17,847,711 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)

1. 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.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $167.00 to $167.82, 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. 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.
4. 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.
5. F5. These shares are held by a family trust for which the reporting person is co-trustee.
6. 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

Total shares sold: 306,139 shares Weighted average sale price: $167.312 per share Sale price range: $167.00–$167.82 per share +5 more

8 metrics

Total shares sold 306,139 shares Open-market sales on April 20, 2026 by family trusts

Weighted average sale price $167.312 per share Average price for reported ANET share sales

Sale price range $167.00–$167.82 per share Price range of individual transactions in reported sales

Shares sold by family trust 214,299 shares Shares sold from a family trust where Ullal is co-trustee

Shares sold by each child’s trust 45,920 shares Shares sold by each of two separate child trusts

Family trust holdings after sale 17,847,711 shares Common stock held in one family trust post-transaction

Child trust holdings after sale 5,287,287 shares Common stock held in a child’s trust after reported sale

Direct holdings after transaction 9,917 shares Common stock held directly by Jayshree Ullal

Key Terms

Rule 10b5-1 trading plan, weighted average price, disclaims beneficial ownership, family trust, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person"

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 regulatory

"The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares"

family trust financial

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

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

FAQ

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

What insider transaction did Arista Networks (ANET) disclose for Jayshree Ullal?

Arista Networks reported that family trusts associated with CEO Jayshree Ullal sold 306,139 shares of common stock on April 20, 2026. The sales were open-market transactions executed under a pre-arranged Rule 10b5-1 trading plan adopted on November 14, 2025 for the benefit of relatives.

At what price were the ANET shares sold in the Ullal-related trusts’ transactions?

The reported weighted average sale price was $167.312 per Arista Networks share. Footnotes explain the shares were sold in multiple trades, with individual transaction prices ranging from $167.00 to $167.82 inclusive, reflecting typical execution across a trading range on the transaction date.

How many Arista Networks (ANET) shares do Ullal-related trusts hold after the reported sales?

After the April 20, 2026 sales, one family trust associated with Jayshree Ullal held 17,847,711 ANET shares, while a separate trust for a child held 5,287,287 shares. Additional trusts for a niece and nephew each held 30,000 shares, according to the Form 4 disclosure.

Does Jayshree Ullal personally own Arista Networks (ANET) shares after these transactions?

Yes. The Form 4 shows Jayshree Ullal holding 9,917 Arista Networks common shares directly after the reported transactions. Separately, various trusts for relatives and children also hold shares, where she serves as trustee or co-trustee and in some cases disclaims beneficial ownership of the trust-held shares.

Were the ANET share sales by Ullal-related trusts part of a Rule 10b5-1 plan?

Yes. Footnotes state the sales were executed pursuant to a Rule 10b5-1 trading plan adopted by Jayshree Ullal on November 14, 2025. Such plans pre-schedule trades, indicating these sales for the benefit of relatives and children were arranged in advance rather than timed discretionarily.

What is notable about Ullal’s beneficial ownership in the ANET family trusts?

The filing notes that some shares are held in trusts for Ullal’s children and other relatives, where she serves as trustee or co-trustee and shares voting and investment control. In certain cases, she expressly disclaims beneficial ownership, clarifying that economic benefits belong to the relatives, not her personally.

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 04/22/2026 - 07:09 PM EDT Learn about SEC filing dates

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).

X

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)
04/20/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/20/2026		S(1)		45,920	D	$167.312(2)	5,287,287	I	By Trust for Child 1(3)
Common Stock	04/20/2026		S(1)		45,920	D	$167.312(2)	5,287,287	I	By Trust for Child 2(3)
Common Stock	04/20/2026		S(4)		214,299	D	$167.312(2)	17,847,711	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

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 $167.00 to $167.82, 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	04/22/2026
	** 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)