Arista Networks director Templeton sells 5,000 shares

The transactions were reported under a Rule 10b5-1 plan entered June 9, 2026, alongside a trust holding of 75,200 shares for which Templeton's spouse serves as trustee.

Rhea-AI Filing Summary

Arista Networks, Inc. director Mark B. Templeton sold 5,000 shares of common stock on October 1, 2026, in five reported transactions. The sales were made under a Rule 10b5-1 trading plan entered into on June 9, 2026; their weighted-average prices were $201.6243, $202.8980, $204.4450, $205.5758 and $206.0300 per share. The filing also lists 75,200 shares held in a trust for which his spouse serves as trustee.

Insider Trade Summary 10b5-1

Net Seller: 5,000 shares

Net Sell 6 txns

Insider TEMPLETON MARK B

Role Director

Sold 5,000 shs ($1.02M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	700	$201.6243	$141K
Sale	Common Stock F1, F3	500	$202.898	$101K
Sale	Common Stock F1, F4	1,800	$204.445	$368K
Sale	Common Stock F1, F5	1,800	$205.5758	$370K
Sale	Common Stock F1, F6	200	$206.03	$41K
holding	Common Stock F7	--	--	--

Holdings After Transaction: Common Stock — 48,410 shares (Direct); Common Stock — 75,200 shares (Indirect, by Spouse)

Footnotes (7)

1. F1. The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.18 to $202.10, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.64 to $203.09, 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.
4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $203.99 to $204.97, 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. F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $205.00 to $205.97, 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.
6. F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $206.02 to $206.04, 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.
7. F7. These shares are held in a trust for which the reporting person's spouse serves as trustee.

Key Figures

Common shares sold: 5,000 shares Sale volume and weighted-average price: 700 shares at $201.6243 per share Sale volume and weighted-average price: 500 shares at $202.8980 per share +4 more

7 metrics

Common shares sold 5,000 shares October 1, 2026

Sale volume and weighted-average price 700 shares at $201.6243 per share October 1, 2026

Sale volume and weighted-average price 500 shares at $202.8980 per share October 1, 2026

Sale volume and weighted-average price 1,800 shares at $204.4450 per share October 1, 2026

Sale volume and weighted-average price 1,800 shares at $205.5758 per share October 1, 2026

Sale volume and weighted-average price 200 shares at $206.0300 per share October 1, 2026

Shares held in spouse's trust 75,200 shares The reporting data lists these as indirect holdings; the spouse serves as trustee.

Key Terms

Rule 10b5-1 trading plan, weighted average price, trustee

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.

trustee financial

"the reporting person's spouse serves as trustee"

A trustee is a person or institution legally appointed to hold and manage assets or enforce an agreement on behalf of other people (beneficiaries). Think of a trustee as a neutral referee or custodian who must act in the beneficiaries’ best interests, follow the trust or contract rules, and handle distributions, recordkeeping and enforcement. Investors care because a trustworthy trustee protects their rights, ensures promised payments or remedies are delivered, and can influence recoveries if things go wrong.

FAQ

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

How many ANET shares did Mark B. Templeton sell, and at what prices?

Mark B. Templeton sold 5,000 shares on October 1, 2026, in five reported transactions: 700 shares at a weighted-average price of $201.6243 per share, 500 at $202.8980, 1,800 at $204.4450, 1,800 at $205.5758 and 200 at $206.0300.

What price ranges were reported for Mark B. Templeton's ANET sales?

The reported ranges were $201.18 to $202.10 for 700 shares, $202.64 to $203.09 for 500 shares, $203.99 to $204.97 for 1,800 shares, $205.00 to $205.97 for 1,800 shares and $206.02 to $206.04 for 200 shares.

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

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Available on EDGAR 10/05/2026 - 07:35 PM Accepted by SEC EDGAR 10/05/2026 - 07:35 PM 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^*

TEMPLETON MARK B

(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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

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	10/01/2026		S(1)		700	D	$201.6243(2)	52,710	D
Common Stock	10/01/2026		S(1)		500	D	$202.898(3)	52,210	D
Common Stock	10/01/2026		S(1)		1,800	D	$204.445(4)	50,410	D
Common Stock	10/01/2026		S(1)		1,800	D	$205.5758(5)	48,610	D
Common Stock	10/01/2026		S(1)		200	D	$206.03(6)	48,410	D
Common Stock								75,200	I	by Spouse(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)
				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 on June 9, 2026.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.18 to $202.10, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.64 to $203.09, 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.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $203.99 to $204.97, 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 price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $205.00 to $205.97, 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.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $206.02 to $206.04, 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.

7. These shares are held in a trust for which the reporting person's spouse serves as trustee.

	By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Mark Templeton	10/05/2026
	** 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)