Kenneth Duda - 17 Dec 2025 Form 4 Insider Report for Arista Networks, Inc. (ANET)

Role
President and CTO, Director
Signature
By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda
Issuer symbol
ANET
Transactions as of
17 Dec 2025
Net transactions value
-$6,791,272
Form type
4
Filing time
19 Dec 2025, 19:10:14 UTC
Previous filing
05 Dec 2025
Next filing
22 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Duda Kenneth President and CTO, Director 5453 GREAT AMERICA PARKWAY, SANTA CLARA By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda 19 Dec 2025 0001605808

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ANET Common Stock Options Exercise $105,450 +30,000 +231% $3.52 42,976 17 Dec 2025 Direct F1
transaction ANET Common Stock Sale $1,930,299 -15,766 -37% $122.43 27,210 17 Dec 2025 Direct F1, F2
transaction ANET Common Stock Sale $835,524 -6,788 -25% $123.09 20,422 17 Dec 2025 Direct F1, F3
transaction ANET Common Stock Sale $566,030 -4,553 -22% $124.32 15,869 17 Dec 2025 Direct F1, F4
transaction ANET Common Stock Sale $328,933 -2,625 -17% $125.31 13,244 17 Dec 2025 Direct F1, F5
transaction ANET Common Stock Sale $33,886 -268 -2% $126.44 12,976 17 Dec 2025 Direct F1, F6
transaction ANET Common Stock Sale $1,029,550 -8,409 -0.73% $122.43 1,150,759 17 Dec 2025 By Childrens' Trust F2, F7, F8
transaction ANET Common Stock Sale $445,457 -3,619 -0.31% $123.09 1,147,140 17 Dec 2025 By Childrens' Trust F3, F7, F8
transaction ANET Common Stock Sale $301,974 -2,429 -0.21% $124.32 1,144,711 17 Dec 2025 By Childrens' Trust F4, F7, F8
transaction ANET Common Stock Sale $175,431 -1,400 -0.12% $125.31 1,143,311 17 Dec 2025 By Childrens' Trust F5, F7, F8
transaction ANET Common Stock Sale $18,081 -143 -0.01% $126.44 1,143,168 17 Dec 2025 By Childrens' Trust F6, F7, F8
transaction ANET Common Stock Sale $643,392 -5,255 -0.97% $122.43 537,145 17 Dec 2025 By Foundation F2, F9, F10
transaction ANET Common Stock Sale $278,549 -2,263 -0.42% $123.09 534,882 17 Dec 2025 By Foundation F3, F9, F10
transaction ANET Common Stock Sale $188,718 -1,518 -0.28% $124.32 533,364 17 Dec 2025 By Foundation F4, F9, F10
transaction ANET Common Stock Sale $109,644 -875 -0.16% $125.31 532,489 17 Dec 2025 By Foundation F5, F9, F10
transaction ANET Common Stock Sale $11,253 -89 -0.02% $126.44 532,400 17 Dec 2025 By Foundation F6, F9, F10
holding ANET Common Stock 757,961 17 Dec 2025 By GRAT JD F11
holding ANET Common Stock 757,961 17 Dec 2025 By GRAT KD F12
holding ANET Common Stock 35,083 17 Dec 2025 by Trust F13

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction ANET Non-Qualified Stock Option (right to buy) Options Exercise $0 -30,000 -50% $0.000000 30,000 17 Dec 2025 Common Stock 30,000 $3.52 Direct F1, F14
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

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).

Explanation of Responses:

Id Content
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.
F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $121.82 to $122.81, 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 $122.82 to $123.73, 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 $123.84 to $124.81, 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 $124.88 to $125.86, 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 $126.28 to $126.80, 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.
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.
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 13, 2025 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 1/60th of the shares subject to the option vested and became exercisable on April 1, 2017 and 1/60th of the shares subject to the option shall vested monthly thereafter.