TapewireFind a company

person · Reporting owner

Duda Kenneth

Disclosed activity across 1 company

Tapewire entity
10329
SEC CIK
0001605808

Export transaction history ↓

Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Arista Networks, Inc.ANET · Entity 2421Director · President and CTOSeptember 21, 2026September 23, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Arista Networks, Inc.

Report date September 21, 2026 · Filed September 23, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect12,976 Ending reported balance After 2026-09-21 transaction · row 6
6 source rows · reconciled sequence

Row 1 · 2026-09-21 · Exercise / conversion · Acquired 17,333 · Balance 30,309

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.

Row 2 · 2026-09-21 · Sale · Disposed 1,480 · Balance 28,829

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.

Row 3 · 2026-09-21 · Sale · Disposed 7,420 · Balance 21,409

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.

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.

Row 4 · 2026-09-21 · Sale · Disposed 2,700 · Balance 18,709

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.

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.

Row 5 · 2026-09-21 · Sale · Disposed 3,533 · Balance 15,176

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.

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.

Row 6 · 2026-09-21 · Sale · Disposed 2,200 · Balance 12,976

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.

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.

Common StockSEC Table I · non-derivativeIndirectBy Childrens' Trust1,170,918 Last balance in matching sequence After 2026-09-21 transaction · row 11 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
5 source rows

Row 7 · 2026-09-21 · Sale · Disposed 1,366 · Balance 1,185,552

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.

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.

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.

Row 8 · 2026-09-21 · Sale · Disposed 6,849 · Balance 1,178,703

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.

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.

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.

Row 9 · 2026-09-21 · Sale · Disposed 2,492 · Balance 1,176,211

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.

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.

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.

Row 10 · 2026-09-21 · Sale · Disposed 3,262 · Balance 1,172,949

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.

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.

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.

Row 11 · 2026-09-21 · Sale · Disposed 2,031 · Balance 1,170,918

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.

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.

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.

Common StockSEC Table I · non-derivativeIndirectBy Foundation442,400 Last balance in matching sequence After 2026-09-21 transaction · row 16 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
5 source rows

Row 12 · 2026-09-21 · Sale · Disposed 854 · Balance 451,546

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.

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.

F10: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Row 13 · 2026-09-21 · Sale · Disposed 4,281 · Balance 447,265

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.

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.

F10: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Row 14 · 2026-09-21 · Sale · Disposed 1,558 · Balance 445,707

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.

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.

F10: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Row 15 · 2026-09-21 · Sale · Disposed 2,038 · Balance 443,669

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.

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.

F10: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Row 16 · 2026-09-21 · Sale · Disposed 1,269 · Balance 442,400

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.

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.

F10: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Non-Qualified Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $14.15 · Expires 2029-02-07Direct138,668 Reported balance After 2026-09-21 transaction · row 20 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 20 · 2026-09-21 · Exercise / conversion · Disposed 17,333 · Balance 138,668

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.

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.

Common StockSEC Table I · non-derivativeIndirectBy GRAT JD692,104 Reported balance Holding disclosure · report date 2026-09-21 · row 17 Holding and transaction disclosures are not merged.
1 source row

Row 17 · Balance 692,104

F11: Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.

Common StockSEC Table I · non-derivativeIndirectBy GRAT KD690,621 Reported balance Holding disclosure · report date 2026-09-21 · row 18 Holding and transaction disclosures are not merged.
1 source row

Row 18 · Balance 690,621

F12: Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

Common StockSEC Table I · non-derivativeIndirectby Trust81,927 Reported balance Holding disclosure · report date 2026-09-21 · row 19 Holding and transaction disclosures are not merged.
1 source row

Row 19 · Balance 81,927

F13: These shares are held by a family trust for which the reporting person is co-trustee.

Filing footnotes · ownership attribution and instrument terms

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.

Transaction history

JSON API
Reset

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
April 17, 2026 Filed Apr 21, 2026 23:05 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 9,592 $164.18 $1,574,810.72
Disclosure

SEC source: 0001596532-26-000062 · edgardoc.xml · nonDerivative · entry 5

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,758

F1 · kind: 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.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $163.5911 to $164.59, 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.

Read SEC document
April 17, 2026 Filed Apr 21, 2026 23:05 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 6,410 $163.10 $1,045,458.82
Disclosure

SEC source: 0001596532-26-000062 · edgardoc.xml · nonDerivative · entry 4

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,350

F1 · kind: 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.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $162.59 to $163.589, 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.

Read SEC document
April 17, 2026 Filed Apr 21, 2026 23:05 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 9,892 $162.15 $1,603,952.19
Disclosure

SEC source: 0001596532-26-000062 · edgardoc.xml · nonDerivative · entry 3

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 33,760

F1 · kind: 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.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $161.59 to $162.57, 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.

Read SEC document
April 17, 2026 Filed Apr 21, 2026 23:05 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 1,324 $161.18 $213,403.38
Disclosure

SEC source: 0001596532-26-000062 · edgardoc.xml · nonDerivative · entry 2

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 43,652

F1 · kind: 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 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $160.53 to $161.50, 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.

Read SEC document
April 17, 2026 Filed Apr 21, 2026 23:05 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionCommon Stock 32,000 $15.26 $488,400.00
Disclosure

SEC source: 0001596532-26-000062 · edgardoc.xml · nonDerivative · entry 1

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 44,976

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: 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.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 32,000 $0.00 Strike: $15.26 $0.00
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · derivative · entry 17

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 64,000

Underlying: Common Stock · 32,000 shares

Expires 2028-04-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: 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.

F13 · derivative.exercise_date: 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.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 629 $135.97 $85,526.58
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 13

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 502,400

F8 · kind: 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.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $135.4874 to $136.41, 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.

F9 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 2,681 $134.88 $361,610.60
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 12

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 503,029

F8 · kind: 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.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $134.475 to $135.4697, 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.

F9 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 4,377 $134.02 $586,588.03
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 11

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 505,710

F8 · kind: 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.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.47 to $134.4696, 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.

F9 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 2,313 $133.03 $307,708.80
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 10

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 510,087

F8 · kind: 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.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.47 to $133.4683, 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.

F9 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 1,006 $135.97 $136,788.13
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 9

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 1,095,168

F6 · kind: 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.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $135.4874 to $136.41, 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 · ownership.nature: 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.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 4,290 $134.88 $578,630.91
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 8

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 1,096,174

F6 · kind: 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.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $134.475 to $135.4697, 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 · ownership.nature: 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.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 7,003 $134.02 $938,514.05
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 7

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 1,100,464

F6 · kind: 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.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.47 to $134.4696, 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 · ownership.nature: 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.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 3,701 $133.03 $492,360.68
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 6

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 1,107,467

F6 · kind: 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.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.47 to $133.4683, 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 · ownership.nature: 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.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 2,013 $135.97 $273,712.24
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 5

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,976

F1 · kind: 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.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $135.4874 to $136.41, 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.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 8,581 $134.88 $1,157,396.70
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 4

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,989

F1 · kind: 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.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $134.475 to $135.4697, 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.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 14,005 $134.02 $1,876,894.08
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 3

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 23,570

F1 · kind: 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.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.47 to $134.4696, 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.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 7,401 $133.03 $984,588.33
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 2

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 37,575

F1 · kind: 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 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.47 to $133.4683, 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.

Read SEC document
March 17, 2026 Filed Mar 19, 2026 23:03 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionCommon Stock 32,000 $15.26 $488,400.00
Disclosure

SEC source: 0001596532-26-000050 · edgardoc.xml · nonDerivative · entry 1

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 44,976

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: 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.

Read SEC document
March 11, 2026 Filed Mar 13, 2026 23:04 UTC Arista Networks, Inc. ANET · Entity 2421 OtherCommon Stock 111,628 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000045 · edgardoc.xml · nonDerivative · entry 3

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 201,134

F5 · kind: Represents an aggregate of 111,628 shares contributed from the GRAT of the Reporting Person (55,814 shares), and GRAT of the Reporting Person's spouse (55,814 shares)

F6 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

Read SEC document
March 11, 2026 Filed Mar 13, 2026 23:04 UTC Arista Networks, Inc. ANET · Entity 2421 OtherCommon Stock 55,814 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000045 · edgardoc.xml · nonDerivative · entry 2

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · By GRAT KD

Disclosed balance after: 702,147

F3 · kind: Represents 55,814 shares transferred to the Family Trust from the GRAT of the Reporting Person.

F4 · ownership.nature: Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

Read SEC document
March 11, 2026 Filed Mar 13, 2026 23:04 UTC Arista Networks, Inc. ANET · Entity 2421 OtherCommon Stock 55,814 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000045 · edgardoc.xml · nonDerivative · entry 1

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · By GRAT JD

Disclosed balance after: 702,147

F1 · kind: Represents 55,814 shares transferred to the Family Trust from the GRAT of the Reporting Person's spouse.

F2 · ownership.nature: Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionRestricted Stock Unit-8 · Derivative 3,880 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 25

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,648

Underlying: Common Stock · 3,880 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F15 · derivative.exercise_date: Six 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.

F15 · derivative.expiration_date: Six 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.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionRestricted Stock Unit-16 · Derivative 44,240 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 24

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 44,240 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F14 · derivative.exercise_date: This performance stock award was granted in the first quarter of 2023 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

F14 · derivative.expiration_date: This performance stock award was granted in the first quarter of 2023 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 GrantRestricted Stock Unit-16 · Derivative 44,240 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 23

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,240

Underlying: Common Stock · 44,240 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F14 · derivative.exercise_date: This performance stock award was granted in the first quarter of 2023 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

F14 · derivative.expiration_date: This performance stock award was granted in the first quarter of 2023 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionRestricted Stock Unit-14 · Derivative 19,816 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 22

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 356,688

Underlying: Common Stock · 19,816 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F13 · derivative.exercise_date: Five 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.

F13 · derivative.expiration_date: Five 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.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionRestricted Stock Unit-13 · Derivative 1,836 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 21

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,184

Underlying: Common Stock · 1,836 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F12 · derivative.exercise_date: Six 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.

F12 · derivative.expiration_date: Six 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.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionRestricted Stock Unit-11 · Derivative 4,148 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 20

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,032

Underlying: Common Stock · 4,148 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F11 · derivative.exercise_date: Six 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.

F11 · derivative.expiration_date: Six 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.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionRestricted Stock Unit - 19 · Derivative 14,400 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 19

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 14,400 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F10 · derivative.exercise_date: This performance stock award was granted in the first quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

F10 · derivative.expiration_date: This performance stock award was granted in the first quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 GrantRestricted Stock Unit - 19 · Derivative 14,400 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 18

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,400

Underlying: Common Stock · 14,400 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F10 · derivative.exercise_date: This performance stock award was granted in the first quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

F10 · derivative.expiration_date: This performance stock award was granted in the first quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionRestricted Stock Unit - 18 · Derivative 19,576 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 17

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 19,576 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F9 · derivative.exercise_date: This performance stock award was granted in the first quarter of 2024 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

F9 · derivative.expiration_date: This performance stock award was granted in the first quarter of 2024 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 GrantRestricted Stock Unit - 18 · Derivative 19,576 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 16

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,576

Underlying: Common Stock · 19,576 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F9 · derivative.exercise_date: This performance stock award was granted in the first quarter of 2024 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

F9 · derivative.expiration_date: This performance stock award was granted in the first quarter of 2024 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionRestricted Stock Unit - 17 · Derivative 1,350 $0.00 Strike: $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · derivative · entry 15

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,250

Underlying: Common Stock · 1,350 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F8 · derivative.exercise_date: Six 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.

F8 · derivative.expiration_date: Six 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.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Tax withholdingCommon Stock 54,823 $137.23 $7,523,360.29
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · nonDerivative · entry 9

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 89,506

F3 · kind: Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units.

F2 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionCommon Stock 19,576 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · nonDerivative · entry 8

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 144,329

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F2 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionCommon Stock 14,400 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · nonDerivative · entry 7

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 124,753

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F2 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionCommon Stock 1,350 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · nonDerivative · entry 6

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 110,353

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F2 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionCommon Stock 19,816 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · nonDerivative · entry 5

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 109,003

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F2 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionCommon Stock 1,836 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · nonDerivative · entry 4

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 89,187

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F2 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionCommon Stock 44,240 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · nonDerivative · entry 3

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 87,351

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F2 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionCommon Stock 4,148 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · nonDerivative · entry 2

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 43,111

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F2 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

Read SEC document
February 20, 2026 Filed Feb 25, 2026 00:18 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionCommon Stock 3,880 $0.00 $0.00
Disclosure

SEC source: 0001596532-26-000028 · edgardoc.xml · nonDerivative · entry 1

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 38,963

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting.

F2 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

Read SEC document
February 17, 2026 Filed Feb 20, 2026 01:43 UTC Arista Networks, Inc. ANET · Entity 2421 Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative 32,000 $0.00 Strike: $15.26 $0.00
Disclosure

SEC source: 0001605808-26-000002 · form4-02202026_010220.xml · derivative · entry 20

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 96,000

Underlying: Common Stock · 32,000 shares

Expires 2028-04-12

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The exercise and/or sale eof shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on March 13, 2025.

F13 · derivative.exercise_date: 1/48th of the shares subject to the option vested and became exercisable on June 1, 2020 and 1/48th of the shares subject to the option continued to vest each month thereafter.

Read SEC document
February 17, 2026 Filed Feb 20, 2026 01:43 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 28 $144.74 $4,052.72
Disclosure

SEC source: 0001605808-26-000002 · form4-02202026_010220.xml · nonDerivative · entry 16

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 1,111,168

F8 · kind: 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.

F9 · ownership.nature: 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.

Read SEC document
February 17, 2026 Filed Feb 20, 2026 01:43 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 2,262 $142.72 $322,823.37
Disclosure

SEC source: 0001605808-26-000002 · form4-02202026_010220.xml · nonDerivative · entry 15

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 1,111,196

F8 · kind: 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.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $143.52 to $144.13, 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.

F9 · ownership.nature: 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.

Read SEC document
February 17, 2026 Filed Feb 20, 2026 01:43 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 5,494 $142.92 $785,226.10
Disclosure

SEC source: 0001605808-26-000002 · form4-02202026_010220.xml · nonDerivative · entry 14

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 1,113,458

F8 · kind: 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.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $142.52 to $143.51, 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.

F9 · ownership.nature: 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.

Read SEC document
February 17, 2026 Filed Feb 20, 2026 01:43 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 5,182 $142.10 $736,364.27
Disclosure

SEC source: 0001605808-26-000002 · form4-02202026_010220.xml · nonDerivative · entry 13

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 1,118,952

F8 · kind: 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.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $141.52 to $142.51, 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.

F9 · ownership.nature: 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.

Read SEC document
February 17, 2026 Filed Feb 20, 2026 01:43 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 3,034 $141.15 $428,242.12
Disclosure

SEC source: 0001605808-26-000002 · form4-02202026_010220.xml · nonDerivative · entry 12

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 1,124,134

F8 · kind: 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.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $140.52 to $141.50, 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.

F9 · ownership.nature: 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.

Read SEC document
February 17, 2026 Filed Feb 20, 2026 01:43 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 17 $144.74 $2,460.58
Disclosure

SEC source: 0001605808-26-000002 · form4-02202026_010220.xml · nonDerivative · entry 11

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 512,400

F6 · kind: 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.

F7 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Read SEC document
February 17, 2026 Filed Feb 20, 2026 01:43 UTC Arista Networks, Inc. ANET · Entity 2421 SaleCommon Stock 1,414 $143.72 $203,214.28
Disclosure

SEC source: 0001605808-26-000002 · form4-02202026_010220.xml · nonDerivative · entry 10

Duda Kenneth · CIK 0001605808 · Director · President and CTO

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 512,417

F6 · kind: 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.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $143.52 to $144.13, 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 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.