SEC Form 4 · accession 0001596532-26-000210
Arista Networks, Inc. · ANET
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Kenneth Duda
Officer — President and CTO · Director
Period of report
Aug 20, 2026
Accepted (ET)
Aug 24, 2026 · 6:14 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001596532
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Aug 20, 2026 | M | 13,334 | $15.2769 | A | 26,310 | D | |
| Common Stock | Aug 20, 2026 | M | 3,999 | $14.1463 | A | 30,309 | D | |
| Common StockF2 | Aug 20, 2026 | S | 4,197 | $184.3297 | D | 26,112 | D | |
| Common StockF3 | Aug 20, 2026 | S | 5,750 | $185.1821 | D | 20,362 | D | |
| Common StockF4 | Aug 20, 2026 | S | 6,568 | $186.1257 | D | 13,794 | D | |
| Common StockF5 | Aug 20, 2026 | S | 818 | $186.9698 | D | 12,976 | D | |
| Common StockF2,F7 | Aug 20, 2026 | S | 3,875 | $184.3297 | D | 1,027,293 | I | By Childrens' Trust |
| Common StockF3,F7 | Aug 20, 2026 | S | 5,308 | $185.1821 | D | 1,021,985 | I | By Childrens' Trust |
| Common StockF4,F7 | Aug 20, 2026 | S | 6,063 | $186.1257 | D | 1,015,922 | I | By Childrens' Trust |
| Common StockF5,F7 | Aug 20, 2026 | S | 754 | $186.9698 | D | 1,015,168 | I | By Childrens' Trust |
| Common StockF2,F9 | Aug 20, 2026 | S | 2,422 | $184.3297 | D | 459,978 | I | By Foundation |
| Common StockF3,F9 | Aug 20, 2026 | S | 3,317 | $185.1821 | D | 456,661 | I | By Foundation |
| Common StockF4,F9 | Aug 20, 2026 | S | 3,789 | $186.1257 | D | 452,872 | I | By Foundation |
| Common StockF5,F9 | Aug 20, 2026 | S | 472 | $186.9698 | D | 452,400 | I | By Foundation |
| Common StockF10,F11 | Aug 20, 2026 | M | 3,880 | $0.00 | A | 110,770 | I | by Trust |
| Common StockF10,F11 | Aug 20, 2026 | M | 4,148 | $0.00 | A | 114,918 | I | by Trust |
| Common StockF10,F11 | Aug 20, 2026 | M | 1,832 | $0.00 | A | 116,750 | I | by Trust |
| Common StockF10,F11 | Aug 20, 2026 | M | 19,816 | $0.00 | A | 136,566 | I | by Trust |
| Common StockF10,F11 | Aug 20, 2026 | M | 1,350 | $0.00 | A | 137,916 | I | by Trust |
| Common StockF11 | Aug 20, 2026 | F | 15,541 | $186.45 | D | 122,375 | I | by Trust |
| Common StockF13 | holding | — | — | — | 757,755 | I | By GRAT JD | |
| Common StockF14 | holding | — | — | — | 756,272 | I | By GRAT KD |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Non-Qualified Stock Option (right to buy)F15 | $14.1463 | Aug 20, 2026 | M | 3,999 | D | — | Feb 7, 2029 | Common Stock | 3,999 | 156,001 | D |
| Non-Qualified Stock Option (right to buy)F16 | $15.2769 | Aug 20, 2026 | M | 13,334 | D | — | Nov 8, 2028 | Common Stock | 13,334 | 0 | D |
| Restricted Stock Unit - 17F10,F17 | $0.00 | Aug 20, 2026 | M | 1,350 | D | — | — | Common Stock | 1,350 | 17,550 | D |
| Restricted Stock Unit-11F10,F18 | $0.00 | Aug 20, 2026 | M | 4,148 | D | — | — | Common Stock | 4,148 | 20,736 | D |
| Restricted Stock Unit-11F10,F18 | $0.00 | Aug 20, 2026 | M | 4,148 | D | — | — | Common Stock | 4,148 | 16,588 | D |
| Restricted Stock Unit-13F10,F19 | $0.00 | Aug 20, 2026 | M | 1,832 | D | — | — | Common Stock | 1,832 | 16,516 | D |
| Restricted Stock Unit-14F10,F20 | $0.00 | Aug 20, 2026 | M | 19,816 | D | — | — | Common Stock | 19,816 | 317,056 | D |
| Restricted Stock Unit-8F10,F21 | $0.00 | Aug 20, 2026 | M | 3,880 | D | — | — | Common Stock | 3,880 | 3,884 | D |
Explanation of responses
- F1The 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.
- F10Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.
- F11These shares are held by a family trust for which the reporting person is co-trustee.
- F12Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units.
- F13Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.
- F14Reporting person is the trustee of the Kenneth Duda Annuity Trusts.
- F151/48th 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.
- F161/48th 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.
- F17Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 20, 2026 and will continue to vest at the same rate on each quarterly vest date thereafter. A quarterly vest date is the first market trading day on or after February 20, May 20, August 20, and November 20 of each year.
- F18Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on on February 20, 2024 and will continue to vest at the same rate on each quarterly vest date thereafter. A quarterly vest date is the first market trading day on or after February 20, May 20, August 20, and November 20 of each year.
- F19Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 20, 2025 and will continue to vest at the same rate on each quarterly vest date thereafter. A quarterly vest date is the first market trading day on or after February 20, May 20, August 20, and November 20 of each year.
- F2The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $183.72 to $184.7176, 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.
- F20Five percent (5%) of the restricted stock awarded vested on November 20, 2025 and will continue to vest at the same rate on each quarterly vest date thereafter. A quarterly vest date is the first market trading day on or after February 20, May 20, August 20, and November 20 of each year.
- F21Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 20, 2023 and will continue to vest at the same rate on each quarterly vest date thereafter. A quarterly vest date is the first market trading day on or after February 20, May 20, August 20, and November 20 of each year.
- F3The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.72 to $185.719, 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.
- F4The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $185.7311 to $186.7213, 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.
- F5The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $186.7331 to $187.16, 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.
- F6The 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.
- F7These 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.
- F8The 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.
- F9These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.