Arista Networks CTO Kenneth Duda sells 43,333 shares
The reported sales also included shares held through a child’s trust and a 501(c) Foundation.
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Form Type
4
Rhea-AI Filing Summary
Arista Networks, Inc. President and CTO Kenneth Duda exercised options for 17,333 shares on September 21, 2026, at $14.1463 per share; the option position then represented 138,668 shares. That day, 43,333 common shares were sold from his direct holdings and through a child’s trust and a 501(c) Foundation, at reported weighted-average prices of $201.7000, $202.6575, $203.4866, $204.7833 and $205.4950. The exercise and sales were under Rule 10b5-1 plans entered into March 11, 2026.
Insider Trade Summary 10b5-1
Exercise and sale activity reported; no spread calculated
Exercise and Sale
17 txns
Insider
Duda Kenneth
Role
President and CTO
Sold
43,333 shs ($8.82M)
Approx. gross sale proceeds
$8.82M
Approx. exercise cost
$245K
Share of Position Sold
2.6%
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Non-Qualified Stock Option (right to buy) F1, F14 | 17,333 | $0.00 | $0.00 |
| Exercise | Common Stock F1 | 17,333 | $14.1463 | $245K |
| Sale | Common Stock F1, F2 | 1,480 | $201.70 | $299K |
| Sale | Common Stock F1, F3 | 7,420 | $202.6575 | $1.50M |
| Sale | Common Stock F1, F4 | 2,700 | $203.4866 | $549K |
| Sale | Common Stock F1, F5 | 3,533 | $204.7833 | $723K |
| Sale | Common Stock F1, F6 | 2,200 | $205.495 | $452K |
| Sale | Common Stock F7, F2, F8 | 1,366 | $201.70 | $276K |
| Sale | Common Stock F7, F3, F8 | 6,849 | $202.6575 | $1.39M |
| Sale | Common Stock F7, F4, F8 | 2,492 | $203.4866 | $507K |
| Sale | Common Stock F7, F5, F8 | 3,262 | $204.7833 | $668K |
| Sale | Common Stock F7, F6, F8 | 2,031 | $205.495 | $417K |
| Sale | Common Stock F9, F2, F10 | 854 | $201.70 | $172K |
| Sale | Common Stock F9, F3, F10 | 4,281 | $202.6575 | $868K |
| Sale | Common Stock F9, F4, F10 | 1,558 | $203.4866 | $317K |
| Sale | Common Stock F9, F5, F10 | 2,038 | $204.7833 | $417K |
| Sale | Common Stock F9, F6, F10 | 1,269 | $205.495 | $261K |
| Holding | Common Stock F11 | -- | -- | -- |
| Holding | Common Stock F12 | -- | -- | -- |
| Holding | Common Stock F13 | -- | -- | -- |
Holdings After Transaction:
Non-Qualified Stock Option (right to buy) — 138,668 options (Direct);
Common Stock — 12,976 shares (Direct);
Common Stock — 1,170,918 shares (Indirect, By Childrens' Trust);
Common Stock — 442,400 shares (Indirect, By Foundation);
Common Stock — 692,104 shares (Indirect, By GRAT JD);
Common Stock — 690,621 shares (Indirect, By GRAT KD);
Common Stock — 81,927 shares (Indirect, by Trust)
Holdings Before and After:
Non-Qualified Stock Option (right to buy), 156,001 to 138,668 options (Direct);
Common Stock, 12,976 to 12,976 shares (Direct);
Common Stock, 1,186,918 to 1,170,918 shares (Indirect, By Childrens' Trust);
Common Stock, 452,400 to 442,400 shares (Indirect, By Foundation)
Other Insiders: 5 other insiders reported open-market sales of this stock in the 30 days up to this filing.
Footnotes (14)
- 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 11, 2026.
- F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.09 to $202.08, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.10 to $203.08, 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.
- F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $203.11 to $203.99, 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.
- F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $204.20 to $205.18, 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.
- F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $205.20 to $205.95, 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.
- 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 11, 2026.
- 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.
- F9. The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.
- F10. These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.
- F11. Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.
- F12. Reporting person is the trustee of the Kenneth Duda Annuity Trusts.
- F13. These shares are held by a family trust for which the reporting person is co-trustee.
- F14. 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.
Key Figures
Options exercised: 17,333 shares
Option exercise price: $14.1463 per share
Common shares sold: 43,333 shares
+2 more
5 metrics
Options exercised
17,333 shares
September 21, 2026
Option exercise price
$14.1463 per share
September 21, 2026
Common shares sold
43,333 shares
September 21, 2026; direct and indirect holdings
Reported weighted-average sale prices
$201.7000, $202.6575, $203.4866, $204.7833 and $205.4950 per share
Sales reported for September 21, 2026
Option position after exercise
138,668 shares
Position following the September 21, 2026 exercise
Key Terms
Non-Qualified Stock Option, Rule 10b5-1 trading plan, weighted average price
3 terms
Non-Qualified Stock Option technical
"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.
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.
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