STOCK TITAN

Arista Networks (NYSE: ANET) CTO sells 58K shares, exercises 32K stock options

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

Arista Networks, Inc. President and CTO Kenneth Duda reported a mix of option exercises and open-market sales of common stock. He exercised 32,000 shares under a non-qualified stock option at an exercise price of $15.2625 per share, increasing his directly held common stock to 44,976 shares after the exercise.

On the same date, entities associated with Duda, including a 501(c) foundation and trusts, sold a combined 58,000 shares of Arista common stock in open-market transactions at weighted average prices generally between $138.77 and $143.27 per share. Footnotes state that these sales, including those for the benefit of his children and by the foundation, were carried out under pre-established Rule 10b5-1 trading plans, and some trust-held shares are reported with disclaimers of beneficial ownership.

Positive

  • None.

Negative

  • None.
Insider Duda Kenneth
Role President and CTO
Sold 58,000 shs ($8.12M)
Type Security Shares Price Value
Exercise Non-Qualified Stock Option (right to buy) 32,000 $0.00 --
Exercise Common Stock 32,000 $15.2625 $488K
Sale Common Stock 14,501 $139.4094 $2.02M
Sale Common Stock 12,405 $140.1325 $1.74M
Sale Common Stock 3,081 $141.3356 $435K
Sale Common Stock 1,103 $142.335 $157K
Sale Common Stock 910 $143.2324 $130K
Sale Common Stock 7,251 $139.4094 $1.01M
Sale Common Stock 6,202 $140.1325 $869K
Sale Common Stock 1,540 $141.3356 $218K
Sale Common Stock 552 $142.335 $79K
Sale Common Stock 455 $143.2324 $65K
Sale Common Stock 4,532 $139.4094 $632K
Sale Common Stock 3,876 $140.1325 $543K
Sale Common Stock 963 $141.3356 $136K
Sale Common Stock 345 $142.335 $49K
Sale Common Stock 284 $143.2324 $41K
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Non-Qualified Stock Option (right to buy) — 0 shares (Direct, null); Common Stock — 44,976 shares (Direct, null); Common Stock — 1,071,917 shares (Indirect, By Childrens' Trust)
Footnotes (1)
  1. The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 13, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $138.77 to $139.76, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $139.78 to $140.77, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $140.84 to $141.80, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $141.87 to $142.72, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $142.94 to $143.27, 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. 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 children on March 13, 2025. 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. The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 13, 2025 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. Reporting person is the trustee of the Kenneth Duda Annuity Trusts. These shares are held by a family trust for which the reporting person is co-trustee. 1/48th of the shares subject to the option shall vest and become exercisable on June 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.
Shares sold 58,000 shares Total open-market sales reported for 2026-05-18
Options exercised 32,000 shares Non-qualified stock option exercise on 2026-05-18
Option exercise price $15.2625/share Exercise price for 32,000-share non-qualified option
Direct holdings after transactions 44,976 shares Direct common stock position following 2026-05-18 activity
Highest weighted average sale price $143.27/share Upper end of reported sale price ranges
Lowest weighted average sale price $138.77/share Lower end of reported sale price ranges
Rule 10b5-1 trading plan financial
"The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 13, 2025."
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.
Non-Qualified Stock Option financial
"Non-Qualified Stock Option (right to buy)"
A non-qualified stock option (NSO) is a contract that lets an employee or service provider buy company shares at a fixed price for a set period, like a voucher to purchase stock later at today’s price. It matters to investors because exercising NSOs creates ordinary income for the holder and can increase share count, affecting a company’s earnings and ownership mix; think of it as a future sale that can dilute existing shareholders and has immediate tax consequences for the recipient.
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.
501(c) Foundation financial
"These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee."
annuity trust financial
"Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts."
SEC Form 4
FORM 4UNITED 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*
Duda Kenneth

(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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
President and CTO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/18/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/18/2026M(1)32,000A$15.262544,976D
Common Stock05/18/2026S(1)14,501D$139.4094(2)30,475D
Common Stock05/18/2026S(1)12,405D$140.1325(3)18,070D
Common Stock05/18/2026S(1)3,081D$141.3356(4)14,989D
Common Stock05/18/2026S(1)1,103D$142.335(5)13,886D
Common Stock05/18/2026S(1)910D$143.2324(6)12,976D
Common Stock05/18/2026S(7)7,251D$139.4094(2)1,071,917IBy Childrens' Trust(8)
Common Stock05/18/2026S(7)6,202D$140.1325(3)1,065,715IBy Childrens' Trust(8)
Common Stock05/18/2026S(7)1,540D$141.3356(4)1,064,175IBy Childrens' Trust(8)
Common Stock05/18/2026S(7)552D$142.335(5)1,063,623IBy Childrens' Trust(8)
Common Stock05/18/2026S(7)455D$143.2324(6)1,063,168IBy Childrens' Trust(8)
Common Stock05/18/2026S(9)4,532D$139.4094(2)487,868IBy Foundation(10)
Common Stock05/18/2026S(9)3,876D$140.1325(3)483,992IBy Foundation(10)
Common Stock05/18/2026S(9)963D$141.3356(4)483,029IBy Foundation(10)
Common Stock05/18/2026S(9)345D$142.335(5)482,684IBy Foundation(10)
Common Stock05/18/2026S(9)284D$143.2324(6)482,400IBy Foundation(10)
Common Stock702,147IBy GRAT JD(11)
Common Stock702,147IBy GRAT KD(12)
Common Stock201,134Iby Trust(13)
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Non-Qualified Stock Option (right to buy)$15.262505/18/2026M(1)32,000 (14)04/12/2028Common Stock32,000$0.00D
Explanation of Responses:
1. The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 13, 2025.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $138.77 to $139.76, 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 $139.78 to $140.77, 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 $140.84 to $141.80, 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 $141.87 to $142.72, 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 $142.94 to $143.27, 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. 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 children on March 13, 2025.
8. 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.
9. The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 13, 2025 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.
10. These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.
11. Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.
12. Reporting person is the trustee of the Kenneth Duda Annuity Trusts.
13. These shares are held by a family trust for which the reporting person is co-trustee.
14. 1/48th of the shares subject to the option shall vest and become exercisable on June 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.
By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda05/20/2026
** Signature of Reporting PersonDate
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)

FAQ

What insider transactions did ANET executive Kenneth Duda report on this Form 4?

Kenneth Duda reported exercising options for 32,000 shares of Arista Networks common stock and related open-market sales totaling 58,000 shares. The transactions involved both his direct holdings and shares held indirectly through various trusts and a 501(c) foundation.

At what price did Kenneth Duda exercise Arista Networks (ANET) stock options?

Kenneth Duda exercised a non-qualified stock option for 32,000 shares at an exercise price of $15.2625 per share. This converted a derivative position into additional common stock as part of his compensation-related equity holdings in Arista Networks.

How many Arista Networks (ANET) shares did Kenneth Duda sell in this filing?

Entities associated with Kenneth Duda sold a total of 58,000 shares of Arista Networks common stock in open-market transactions. These sales were reported across multiple trades and reflect activity in both direct and indirect holdings, including trusts and a charitable foundation.

What price range did Kenneth Duda’s reported ANET share sales occur at?

The reported sales occurred at weighted average prices within ranges from about $138.77 to $143.27 per share. Footnotes note that each line’s price is an average for multiple trades and that full trade-by-trade pricing details are available upon request.

Were Kenneth Duda’s Arista Networks (ANET) share sales made under a Rule 10b5-1 plan?

Yes. Footnotes explain that both the option exercise and certain share sales, including those by a 501(c) foundation and for the benefit of his children, were executed under Rule 10b5-1 trading plans entered into on March 13, 2025.

How many Arista Networks shares does Kenneth Duda hold directly after these transactions?

After the reported transactions, Kenneth Duda directly holds 44,976 shares of Arista Networks common stock. Additional shares are reported as held indirectly through trusts and a 501(c) foundation, some of which include stated disclaimers of beneficial ownership.