ANET

SEC source: 0001596532-21-000437 · edgardoc.xml · nonDerivative · entry 1

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,018

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 sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on September 14, 2020.

SEC source: 0001596532-21-000425 · edgardoc.xml · nonDerivative · entry 3

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,120,000

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 June 14, 2021.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $125.63 to $126.08, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000425 · edgardoc.xml · nonDerivative · entry 2

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,122,998

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 June 14, 2021.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $124.63 to $125.62, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000425 · edgardoc.xml · nonDerivative · entry 1

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,171,038

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 June 14, 2021.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $123.63 to $124.615, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000422 · edgardoc.xml · nonDerivative · entry 6

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,220,000

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 June 14, 2021.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $127.55 to $128.12, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000422 · edgardoc.xml · nonDerivative · entry 5

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,225,830

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 June 14, 2021.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $126.55 to $127.545, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000422 · edgardoc.xml · nonDerivative · entry 4

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,265,762

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 June 14, 2021.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $125.55 to $126.54, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000422 · edgardoc.xml · nonDerivative · entry 3

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,320,000

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 June 14, 2021.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $126.21 to $126.975, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000422 · edgardoc.xml · nonDerivative · entry 2

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,327,003

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 June 14, 2021.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $125.19 to $126.18, 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.

F3 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000422 · edgardoc.xml · nonDerivative · entry 1

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,358,823

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 June 14, 2021.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $124.19 to $125.18, 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.

F3 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000423 · edgardoc.xml · nonDerivative · entry 3

Sadana Anshul · CIK 0001605807 · SVP, Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,117

F1 · kind: The exercise and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2020.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $126.5412 to $126.93, 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.

SEC source: 0001596532-21-000423 · edgardoc.xml · nonDerivative · entry 2

Sadana Anshul · CIK 0001605807 · SVP, Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,661

F1 · kind: The exercise and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2020.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $125.29 to $126.03, 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.

SEC source: 0001596532-21-000423 · edgardoc.xml · nonDerivative · entry 1

Sadana Anshul · CIK 0001605807 · SVP, Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,560

F1 · kind: The exercise and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 14, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $124.29 to $125.2666, 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.

SEC source: 0001596532-21-000417 · edgardoc.xml · nonDerivative · entry 1

Battles Kelly Bodnar · CIK 0001817763 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,944

F1 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on August 13, 2021.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $126.98 to $127.87, 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.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 14

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,420,000

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 June 14, 2021.

F13 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $127.79 to $128.01, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 13

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,427,090

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 June 14, 2021.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $126.79 to $127.78, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 12

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,511,660

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 June 14, 2021.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $125.79 to $126.78, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000419 · edgardoc.xml · nonDerivative · entry 2

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The exercise and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 10, 2021.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $127.72 to $127.74, 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.

SEC source: 0001596532-21-000419 · edgardoc.xml · nonDerivative · entry 1

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 468

F1 · kind: The exercise and/or sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 10, 2021.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $126.69 to $127.68, 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.

SEC source: 0001596532-21-000418 · edgardoc.xml · derivative · entry 17

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 2,000 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 June 14, 2021.

F16 · derivative.exercise_date: 1/48th of the shares subject to the option vested and become exercisable on June 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.

SEC source: 0001596532-21-000418 · edgardoc.xml · derivative · entry 16

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Common Stock · 2,500 shares

Expires 2029-02-07

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 June 14, 2021.

F15 · derivative.exercise_date: 1/48th of the shares subject to the option vested and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.

SEC source: 0001596532-21-000418 · edgardoc.xml · derivative · entry 15

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,500

Underlying: Common Stock · 7,168 shares

Expires 2027-02-05

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 June 14, 2021.

F14 · derivative.exercise_date: 1/5th of the shares subject to the option vested and became exercisable on February 6, 2018 and 1/60th of the shares subject to the option shall vest each month thereafter.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 11

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,520,000

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 June 14, 2021.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $126.24 to $126.91, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 10

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,550,371

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 June 14, 2021.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $125.24 to $126.22, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 9

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,591,846

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 June 14, 2021.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $124.24 to $125.23, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 8

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,616,687

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 June 14, 2021.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $123.24 to $124.23, 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 · ownership.nature: These shares are held by a family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 7

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,619,800

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 June 14, 2021.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $122.18 to $123.08, 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.

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

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 6

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,429

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 June 14, 2021.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $125.83 to $126.74, 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.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 5

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,358

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 June 14, 2021.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $124.83 to $125.815, 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.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 4

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 99,397

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 June 14, 2021.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $123.80 to $124.43, 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.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 3

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,097

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 June 14, 2021.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 2

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 97,597

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 June 14, 2021.

SEC source: 0001596532-21-000418 · edgardoc.xml · nonDerivative · entry 1

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 95,597

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 June 14, 2021.

SEC source: 0001596532-21-000400 · edgardoc.xml · derivative · entry 2

Battles Kelly Bodnar · CIK 0001817763 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,388

Underlying: Common Stock · 692 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.

F3 · derivative.exercise_date: The reporting person was granted RSUs on June 1, 2021. 1/4th of the shares vested on August 20, 2021 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, or November 20.

F3 · derivative.expiration_date: The reporting person was granted RSUs on June 1, 2021. 1/4th of the shares vested on August 20, 2021 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, or November 20.

SEC source: 0001596532-21-000400 · edgardoc.xml · nonDerivative · entry 1

Battles Kelly Bodnar · CIK 0001817763 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,064

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 · balance_after: On November 18, 2021, the issuer completed a four-for-one stock split of the issuer's common stock. All amounts have been adjusted to give effect to this stock split.

SEC source: 0001596532-21-000401 · edgardoc.xml · derivative · entry 21

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 5,000 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 May 20, 2019 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, November 20 of each year.

F15 · derivative.expiration_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on May 20, 2019 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, November 20 of each year.

SEC source: 0001596532-21-000401 · edgardoc.xml · derivative · entry 20

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,252 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: Five percent (5%) of the restricted stock units awarded vested on February 20, 2017 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, or November 20 of each year.

F14 · derivative.expiration_date: Five percent (5%) of the restricted stock units awarded vested on February 20, 2017 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, or November 20 of each year.

SEC source: 0001596532-21-000401 · edgardoc.xml · derivative · entry 19

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,668

Underlying: Common Stock · 9,332 shares

Expires 2027-02-05

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.

F4 · 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 June 14, 2021.

F13 · derivative.exercise_date: 1/5th of the shares subject to the option vested and became exercisable on February 6, 2018 and 1/60th of the shares subject to the option shall vest each month thereafter.

SEC source: 0001596532-21-000401 · edgardoc.xml · derivative · entry 18

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,668

Underlying: Common Stock · 20,000 shares

Expires 2026-02-11

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.

F4 · 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 June 14, 2021.

F12 · derivative.exercise_date: 1/60th of the shares subject to the option vested on January 1, 2017 and 1/60th of the shares subject to the option shall continue to vest each month thereafter.

SEC source: 0001596532-21-000401 · edgardoc.xml · derivative · entry 17

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 66,668 shares

Expires 2024-05-19

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.

F4 · 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 June 14, 2021.

F11 · derivative.exercise_date: 1/5th of the shares subject to the option vested on September 30, 2017 and 1/60th of the shares subject to the option shall vest monthly thereafter.

SEC source: 0001596532-21-000401 · edgardoc.xml · derivative · entry 16

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,332

Underlying: Common Stock · 4,000 shares

Expires 2024-01-12

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.

F4 · 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 June 14, 2021.

F10 · derivative.exercise_date: 1/5th of the shares subject to the option vested and became exercisable on December 1, 2017 and 1/60th of the shares subject to the option shall vest monthly thereafter.

SEC source: 0001596532-21-000401 · edgardoc.xml · nonDerivative · entry 15

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,620,000

F4 · 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 June 14, 2021.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $131.02 to $131.88, 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 family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000401 · edgardoc.xml · nonDerivative · entry 14

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,637,605

F4 · 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 June 14, 2021.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $130.02 to $131.01, 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 family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000401 · edgardoc.xml · nonDerivative · entry 13

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,647,134

F4 · 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 June 14, 2021.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $129.02 to $130.01, 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 family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000401 · edgardoc.xml · nonDerivative · entry 12

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 48,683,759

F4 · 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 June 14, 2021.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.02 to $129.01, 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 family trust for which the reporting person is a trustee.

SEC source: 0001596532-21-000401 · edgardoc.xml · nonDerivative · entry 11

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 88,429

F4 · 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 June 14, 2021.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $131.02 to $131.88, 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.

SEC source: 0001596532-21-000401 · edgardoc.xml · nonDerivative · entry 10

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,798

F4 · 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 June 14, 2021.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $130.02 to $131.01, 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.

SEC source: 0001596532-21-000401 · edgardoc.xml · nonDerivative · entry 9

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,242

F4 · 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 June 14, 2021.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $129.02 to $130.01, 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.

SEC source: 0001596532-21-000401 · edgardoc.xml · nonDerivative · entry 8

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 152,323

F4 · 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 June 14, 2021.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.02 to $129.01, 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.

SEC source: 0001596532-21-000401 · edgardoc.xml · nonDerivative · entry 7

BECHTOLSHEIM ANDREAS · CIK 0001133206 · Director · Chief Development Officer · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 188,429

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.

F4 · 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 June 14, 2021.