ANET

SEC source: 0001596532-23-000242 · edgardoc.xml · nonDerivative · entry 1

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 560

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 sales reported on this Form 4 were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 8, 2022.

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

SEC source: 0001596532-23-000243 · edgardoc.xml · derivative · entry 10

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,916

Underlying: Common Stock · 208 shares

Expires 2028-11-08

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, 2022.

F8 · derivative.exercise_date: 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.

SEC source: 0001596532-23-000243 · edgardoc.xml · derivative · entry 9

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,332

Underlying: Common Stock · 416 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 sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on September 14, 2022.

F7 · 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.

SEC source: 0001596532-23-000243 · edgardoc.xml · derivative · entry 8

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,832

Underlying: Common Stock · 416 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 sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on September 14, 2022.

F6 · derivative.exercise_date: 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.

SEC source: 0001596532-23-000243 · edgardoc.xml · nonDerivative · entry 7

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

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, 2022.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $198.14 to $198.16, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001596532-23-000243 · edgardoc.xml · nonDerivative · entry 6

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 240

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, 2022.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $197.11 to $197.94, 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: 0001596532-23-000243 · edgardoc.xml · nonDerivative · entry 5

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,077

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, 2022.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $196.11 to $197.10, 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: 0001596532-23-000243 · edgardoc.xml · nonDerivative · entry 4

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,821

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, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $195.09 to $196.04, 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: 0001596532-23-000243 · edgardoc.xml · nonDerivative · entry 3

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,301

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, 2022.

SEC source: 0001596532-23-000243 · edgardoc.xml · nonDerivative · entry 2

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,885

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, 2022.

SEC source: 0001596532-23-000243 · edgardoc.xml · nonDerivative · entry 1

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,677

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, 2022.

SEC source: 0001596532-23-000239 · edgardoc.xml · nonDerivative · entry 3

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 6,777,992

F3 · kind: The exercises 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 14, 2022.

F4 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

SEC source: 0001596532-23-000239 · edgardoc.xml · nonDerivative · entry 2

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust for Child 2

Disclosed balance after: 1,740,200

F1 · 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 relatives on September 14, 2022.

F2 · ownership.nature: These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.

SEC source: 0001596532-23-000239 · edgardoc.xml · nonDerivative · entry 1

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust for Child 1

Disclosed balance after: 1,740,200

F1 · 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 relatives on September 14, 2022.

F2 · ownership.nature: These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.

SEC source: 0001596532-23-000237 · edgardoc.xml · nonDerivative · entry 3

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 6,786,492

F3 · kind: The exercises 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 14, 2022.

F4 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

SEC source: 0001596532-23-000237 · edgardoc.xml · nonDerivative · entry 2

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust for Child 2

Disclosed balance after: 1,744,200

F1 · 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 relatives on September 14, 2022.

F2 · ownership.nature: These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.

SEC source: 0001596532-23-000237 · edgardoc.xml · nonDerivative · entry 1

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust for Child 1

Disclosed balance after: 1,744,200

F1 · 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 relatives on September 14, 2022.

F2 · ownership.nature: These shares are held in trust for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.

SEC source: 0001596532-23-000236 · edgardoc.xml · nonDerivative · entry 1

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 144

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 8, 2022.

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

SEC source: 0001596532-23-000222 · edgardoc.xml · derivative · entry 2

Battles Kelly Bodnar · CIK 0001817763 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,117

Underlying: Common Stock · 373 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.

F2 · derivative.exercise_date: The reporting person was granted RSUs on June 14, 2023. 1/4th of the shares vest on August 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, or November 20.

F2 · derivative.expiration_date: The reporting person was granted RSUs on June 14, 2023. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-23-000222 · edgardoc.xml · nonDerivative · entry 1

Battles Kelly Bodnar · CIK 0001817763 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,027

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.

SEC source: 0001596532-23-000223 · edgardoc.xml · derivative · entry 2

CHEW LEWIS · CIK 0001224994 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,117

Underlying: Common Stock · 373 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.

F2 · derivative.exercise_date: The reporting person was granted RSUs on June 14, 2023. 1/4th of the shares vest on August 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, or November 20.

F2 · derivative.expiration_date: The reporting person was granted RSUs on June 14, 2023. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-23-000223 · edgardoc.xml · nonDerivative · entry 1

CHEW LEWIS · CIK 0001224994 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,875

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.

SEC source: 0001596532-23-000224 · edgardoc.xml · derivative · entry 3

Giancarlo Charles H · CIK 0001299634 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,117

Underlying: Common Stock · 373 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 14, 2023. 1/4th of the shares vest on August 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, or November 20.

F3 · derivative.expiration_date: The reporting person was granted RSUs on June 14, 2023. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-23-000224 · edgardoc.xml · nonDerivative · entry 1

Giancarlo Charles H · CIK 0001299634 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,947

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.

SEC source: 0001596532-23-000225 · edgardoc.xml · derivative · entry 2

Scheinman Daniel · CIK 0001605698 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,117

Underlying: Common Stock · 373 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.

F2 · derivative.exercise_date: The reporting person was granted RSUs on June 14, 2023. 1/4th of the shares vest on August 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, or November 20.

F2 · derivative.expiration_date: The reporting person was granted RSUs on June 14, 2023. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-23-000225 · edgardoc.xml · nonDerivative · entry 1

Scheinman Daniel · CIK 0001605698 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,615

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.

SEC source: 0001596532-23-000226 · edgardoc.xml · derivative · entry 3

TEMPLETON MARK B · CIK 0001201938 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,117

Underlying: Common Stock · 373 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 14, 2023. 1/4th of the shares vest on August 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, or November 20.

F3 · derivative.expiration_date: The reporting person was granted RSUs on June 14, 2023. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-23-000226 · edgardoc.xml · nonDerivative · entry 1

TEMPLETON MARK B · CIK 0001201938 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,535

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.

SEC source: 0001596532-23-000227 · edgardoc.xml · derivative · entry 2

Wassenaar Yvonne · CIK 0001707744 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,117

Underlying: Common Stock · 373 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.

F2 · derivative.exercise_date: The reporting person was granted RSUs on June 14, 2023. 1/4th of the shares vest on August 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, or November 20.

F2 · derivative.expiration_date: The reporting person was granted RSUs on June 14, 2023. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-23-000227 · edgardoc.xml · nonDerivative · entry 1

Wassenaar Yvonne · CIK 0001707744 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,678

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.

SEC source: 0001596532-23-000228 · edgardoc.xml · derivative · entry 15

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,618

Underlying: Common Stock · 971 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: Six and one-quarter percent (6.25%) of the restricted stock units awarded will vest 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.

F9 · derivative.expiration_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded will vest 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.

SEC source: 0001596532-23-000228 · edgardoc.xml · derivative · entry 14

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,516

Underlying: Common Stock · 1,832 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, 2022 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, 2022 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.

SEC source: 0001596532-23-000228 · edgardoc.xml · derivative · entry 13

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,808

Underlying: Common Stock · 3,636 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.

F7 · derivative.exercise_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on May 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, and November 20 of each year.

F7 · derivative.expiration_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on May 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, and November 20 of each year.

SEC source: 0001596532-23-000228 · edgardoc.xml · derivative · entry 12

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,248

Underlying: Common Stock · 1,564 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.

F6 · derivative.exercise_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on November 20, 2020 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.

F6 · derivative.expiration_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on November 20, 2020 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.

SEC source: 0001596532-23-000228 · edgardoc.xml · derivative · entry 11

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,500

Underlying: Common Stock · 876 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.

F5 · derivative.exercise_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on November 20, 2020 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.

F5 · derivative.expiration_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on November 20, 2020 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.

SEC source: 0001596532-23-000228 · edgardoc.xml · derivative · entry 10

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,184

Underlying: Common Stock · 1,088 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.

F4 · derivative.exercise_date: This performance stock award was granted in the first quarter of 2021 and was earned based on attainment of certain performance conditions. The award vests 1/3 on February 22, 2022, and will continue to vest quarterly over 2 years. 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.

F4 · derivative.expiration_date: This performance stock award was granted in the first quarter of 2021 and was earned based on attainment of certain performance conditions. The award vests 1/3 on February 22, 2022, and will continue to vest quarterly over 2 years. 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.

SEC source: 0001596532-23-000228 · edgardoc.xml · derivative · entry 9

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,949

Underlying: Common Stock · 971 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: This performance stock award was granted in the first quarter of 2021 and was earned based on attainment of certain performance conditions. The award vests 1/3 on February 22, 2022, and will continue to vest quarterly over 2 years. 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.

F3 · derivative.expiration_date: This performance stock award was granted in the first quarter of 2021 and was earned based on attainment of certain performance conditions. The award vests 1/3 on February 22, 2022, and will continue to vest quarterly over 2 years. 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.

SEC source: 0001596532-23-000228 · edgardoc.xml · nonDerivative · entry 8

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,553

F2 · kind: Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units.

SEC source: 0001596532-23-000228 · edgardoc.xml · nonDerivative · entry 7

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,980

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.

SEC source: 0001596532-23-000228 · edgardoc.xml · nonDerivative · entry 6

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,009

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.

SEC source: 0001596532-23-000228 · edgardoc.xml · nonDerivative · entry 5

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,921

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.

SEC source: 0001596532-23-000228 · edgardoc.xml · nonDerivative · entry 4

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,950

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.

SEC source: 0001596532-23-000228 · edgardoc.xml · nonDerivative · entry 3

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,118

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.

SEC source: 0001596532-23-000228 · edgardoc.xml · nonDerivative · entry 2

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,482

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.

SEC source: 0001596532-23-000228 · edgardoc.xml · nonDerivative · entry 1

Brennan Ita M · CIK 0001494211 · Senior Vice President, CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,918

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.

SEC source: 0001596532-23-000229 · edgardoc.xml · derivative · entry 20

Duda Kenneth · CIK 0001605808 · CTO and SVP Software Eng.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,363

Underlying: Common Stock · 678 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 2021 and was earned based on attainment of certain performance conditions. The award vests 1/3 on February 22, 2022, and will continue to vest quarterly over 2 years. 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.

F14 · derivative.expiration_date: This performance stock award was granted in the first quarter of 2021 and was earned based on attainment of certain performance conditions. The award vests 1/3 on February 22, 2022, and will continue to vest quarterly over 2 years. 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.

SEC source: 0001596532-23-000229 · edgardoc.xml · derivative · entry 19

Duda Kenneth · CIK 0001605808 · CTO and SVP Software Eng.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,618

Underlying: Common Stock · 971 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: Six and one-quarter percent (6.25%) of the restricted stock units awarded will vest 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.

F13 · derivative.expiration_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded will vest 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.

SEC source: 0001596532-23-000229 · edgardoc.xml · derivative · entry 18

Duda Kenneth · CIK 0001605808 · CTO and SVP Software Eng.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,848

Underlying: Common Stock · 1,428 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 will vest on February 20, 2022 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 will vest on February 20, 2022 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.

SEC source: 0001596532-23-000229 · edgardoc.xml · derivative · entry 17

Duda Kenneth · CIK 0001605808 · CTO and SVP Software Eng.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,988

Underlying: Common Stock · 2,668 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 May 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, 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 May 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, and November 20 of each year.

SEC source: 0001596532-23-000229 · edgardoc.xml · derivative · entry 16

Duda Kenneth · CIK 0001605808 · CTO and SVP Software Eng.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,000

Underlying: Common Stock · 1,748 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: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on November 20, 2020 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.

F10 · derivative.expiration_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on November 20, 2020 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.