STOCK TITAN

Arista Networks (NYSE: ANET) CTO exercises options, sells 58,000 shares

(Very High)
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

Arista Networks President and CTO Kenneth Duda exercised a Non-Qualified Stock Option for 32,000 shares of common stock on May 18, 2026 at an exercise price of $15.2625 per share, then sold an aggregate 58,000 shares in multiple open‑market or private transactions at weighted‑average prices described in ranges between $138.77 and $143.27 per share.

The disclosure states that these transactions, including sales by a Children’s Trust benefiting his children and by a 501(c) foundation where he and his spouse are co‑trustees, were effected under Rule 10b5-1 trading plans adopted on March 13, 2025. After these trades he holds 12,976 shares directly, 1,063,168 shares indirectly through a Children’s Trust and 482,400 shares indirectly through a foundation, in addition to other trust interests.

Positive

  • None.

Negative

  • None.
Insider Duda Kenneth
Role President and CTO
Sold 58,000 shs ($8.12M)
Approx. gross sale proceeds $8.12M
Approx. exercise cost $488K
Type Security Shares Price Value
Exercise Non-Qualified Stock Option (right to buy) 32,000 $0.00 $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); Common Stock — 12,976 shares (Direct); Common Stock — 1,063,168 shares (Indirect, By Childrens' Trust); Common Stock — 482,400 shares (Indirect, By Foundation); Common Stock — 702,147 shares (Indirect, By GRAT JD); Common Stock — 702,147 shares (Indirect, By GRAT KD); Common Stock — 201,134 shares (Indirect, by Trust)
Footnotes (14)
  1. F1. 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. F2. 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. F3. 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. F4. 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. F5. 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. F6. 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. F7. 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. F8. 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. F9. 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. F10. These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.
  11. F11. Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.
  12. F12. Reporting person is the trustee of the Kenneth Duda Annuity Trusts.
  13. F13. These shares are held by a family trust for which the reporting person is co-trustee.
  14. F14. 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.
Options exercised 32,000 shares Non-Qualified Stock Option exercised on May 18, 2026 at $15.2625 per share
Shares sold 58,000 shares Aggregate Arista Networks common shares sold in multiple transactions on May 18, 2026
Example sale price $139.4094 per share One tranche of common stock sold at a reported weighted-average price
Direct holdings 12,976 shares Direct common stock held by Kenneth Duda after the reported transactions
Children’s Trust holdings 1,063,168 shares Indirect Arista Networks shares held through a Children’s Trust post-transaction
Foundation holdings 482,400 shares Indirect Arista Networks shares held through a 501(c) foundation post-transaction
Non-Qualified Stock Option financial
"exercised a Non-Qualified Stock Option for 32,000 shares"
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.
Rule 10b5-1 trading plan regulatory
"effected pursuant to a Rule 10b5-1 trading plan entered into"
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.
GRAT financial
"nature_of_ownership"By GRAT JD""

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

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FAQ

What did Arista Networks (ANET) insider Kenneth Duda report in this Form 4?

Kenneth Duda, Arista Networks’ President and CTO, exercised 32,000 stock options at $15.2625 and sold 58,000 common shares on May 18, 2026 through multiple transactions, some carried out via family trusts and a charitable foundation.

How many Arista Networks (ANET) shares did Kenneth Duda sell and at what prices?

He reported selling 58,000 shares of Arista Networks common stock in several tranches at weighted-average prices, with price ranges described between $138.77 and $143.27 per share, as detailed across the accompanying price-range footnotes.

Were Kenneth Duda’s ANET transactions made under a Rule 10b5-1 plan?

Yes. The disclosure notes that the option exercise and related share sales were effected under Rule 10b5-1 trading plans adopted on March 13, 2025, including separate plans involving a Children’s Trust and a 501(c) charitable foundation associated with Duda.

What are Kenneth Duda’s remaining direct ANET holdings after these trades?

After these transactions, Kenneth Duda directly owns 12,976 shares of Arista Networks common stock, based on the reported post-transaction holdings, alongside substantial indirect interests held through a Children’s Trust, a charitable foundation and other family trust structures.

How many ANET shares are held through trusts and a foundation associated with Duda?

Post-transaction, entities associated with Kenneth Duda hold 1,063,168 shares through a Children’s Trust and 482,400 shares through a 501(c) foundation, where he or his spouse act as co-trustees, as shown in the reported indirect holdings.

What stock option grant did Kenneth Duda exercise in this ANET filing?

He exercised a Non-Qualified Stock Option covering 32,000 shares of Arista Networks common stock at an exercise price of $15.2625 per share. Footnotes indicate the option vested monthly, with 1/48th of the shares vesting starting June 1, 2020.
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)