ANET

SEC source: 0001596532-24-000390 · edgardoc.xml · nonDerivative · entry 4

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 3,265

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.

SEC source: 0001596532-24-000390 · edgardoc.xml · nonDerivative · entry 3

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 2,746

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.

SEC source: 0001596532-24-000390 · edgardoc.xml · nonDerivative · entry 2

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 2,260

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.

SEC source: 0001596532-24-000390 · edgardoc.xml · nonDerivative · entry 1

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 1,524

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.

SEC source: 0001596532-24-000391 · edgardoc.xml · derivative · entry 9

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,220

Underlying: Common Stock · 1,304 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 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.

F6 · 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: 0001596532-24-000391 · edgardoc.xml · derivative · entry 8

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,544

Underlying: Common Stock · 2,544 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 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.

F5 · 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: 0001596532-24-000391 · edgardoc.xml · derivative · entry 7

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,337

Underlying: Common Stock · 779 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: Six and one-quarter percent (6.25%) of the restricted stock units awarded will vest 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.

F4 · derivative.expiration_date: Six and one-quarter percent (6.25%) of the restricted stock units awarded will vest 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.

SEC source: 0001596532-24-000391 · edgardoc.xml · derivative · entry 6

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,825

Underlying: Common Stock · 728 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: 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.

F3 · 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: 0001596532-24-000391 · edgardoc.xml · nonDerivative · entry 5

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,660

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

SEC source: 0001596532-24-000391 · edgardoc.xml · nonDerivative · entry 4

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,355

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: 0001596532-24-000391 · edgardoc.xml · nonDerivative · entry 3

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,576

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: 0001596532-24-000391 · edgardoc.xml · nonDerivative · entry 2

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,848

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: 0001596532-24-000391 · edgardoc.xml · nonDerivative · entry 1

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,544

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: 0001596532-24-000392 · edgardoc.xml · derivative · entry 14

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,242

Underlying: Common Stock · 6,915 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: 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 (25%) on February 20, 2024, and will continue to vest quarterly over 3 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.

F8 · 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 (25%) on February 20, 2024, and will continue to vest quarterly over 3 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: 0001596532-24-000392 · edgardoc.xml · derivative · entry 13

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,744

Underlying: Common Stock · 5,150 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: This performance stock award was granted in the first quarter of 2022 and was earned based on attainment of certain performance conditions. The award vested 25% on February 21, 2023 and will continue to vest quarterly over 3 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.

F7 · derivative.expiration_date: This performance stock award was granted in the first quarter of 2022 and was earned based on attainment of certain performance conditions. The award vested 25% on February 21, 2023 and will continue to vest quarterly over 3 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: 0001596532-24-000392 · edgardoc.xml · derivative · entry 12

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,496

Underlying: Common Stock · 12,504 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: This performance stock award was granted in the first quarter of 2021 and was earned based on attainment of certain performance conditions. The award vested (25%) on February 20, 2022, and will continue to vest quarterly over 3 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.

F6 · 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 vested (25%) on February 20, 2022, and will continue to vest quarterly over 3 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: 0001596532-24-000392 · edgardoc.xml · derivative · entry 11

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,147

Underlying: Common Stock · 11,154 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: This performance stock award was granted in the first quarter of 2021 and was earned based on attainment of certain performance conditions. The award vested (25%) on February 20, 2022, and will continue to vest quarterly over 3 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.

F6 · 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 vested (25%) on February 20, 2022, and will continue to vest quarterly over 3 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: 0001596532-24-000392 · edgardoc.xml · nonDerivative · entry 5

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,440

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

SEC source: 0001596532-24-000392 · edgardoc.xml · nonDerivative · entry 4

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,404

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: 0001596532-24-000392 · edgardoc.xml · nonDerivative · entry 3

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,489

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: 0001596532-24-000392 · edgardoc.xml · nonDerivative · entry 2

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,339

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: 0001596532-24-000392 · edgardoc.xml · nonDerivative · entry 1

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,835

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: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 28

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 174,600

F12 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 14, 2024 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.

F13 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 27

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 174,610

F12 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 14, 2024 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $422.45 to $423.385, 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.

F13 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 26

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 175,165

F12 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 14, 2024 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $421.34 to $422.33, 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.

F13 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 25

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 175,936

F12 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 14, 2024 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $420.30 to $421.28, 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.

F13 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 24

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 176,666

F12 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 14, 2024 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $419.30 to $420.295, 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.

F13 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 23

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 177,627

F12 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 14, 2024 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 $418.30 to $419.24, 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.

F13 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 22

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 178,035

F12 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 14, 2024 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 $417.30 to $418.275, 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.

F13 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 21

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 178,366

F12 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 14, 2024 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 $416.245 to $417.11, 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.

F13 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 20

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 178,570

F12 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 14, 2024 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 $413.88 to $414.66, 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.

F13 · ownership.nature: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 19

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 328,650

F10 · 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 14, 2024.

F11 · 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.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 18

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 328,690

F10 · 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 14, 2024.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $422.45 to $423.385, 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.

F11 · 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.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 17

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 330,911

F10 · 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 14, 2024.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $421.34 to $422.33, 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.

F11 · 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.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 16

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 333,995

F10 · 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 14, 2024.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $420.30 to $421.28, 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.

F11 · 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.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 15

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 336,914

F10 · 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 14, 2024.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $419.30 to $420.295, 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.

F11 · 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.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 14

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 340,760

F10 · 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 14, 2024.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $418.30 to $419.24, 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.

F11 · 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.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 13

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 342,394

F10 · 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 14, 2024.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $417.30 to $418.275, 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.

F11 · 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.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 12

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 343,716

F10 · 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 14, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $416.245 to $417.11, 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.

F11 · 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.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 11

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 344,530

F10 · 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 14, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $413.88 to $414.66, 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.

F11 · 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.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 10

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,244

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 14, 2024.

SEC source: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 9

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,294

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 14, 2024.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $422.45 to $423.385, 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: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 8

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,071

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 14, 2024.

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $421.34 to $422.33, 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: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 7

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,927

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 14, 2024.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $420.30 to $421.28, 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: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 6

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,576

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 14, 2024.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $419.30 to $420.295, 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: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 5

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,382

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 14, 2024.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $418.30 to $419.24, 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: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 4

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,424

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 14, 2024.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $417.30 to $418.275, 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: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 22,076

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 14, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $416.245 to $417.11, 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: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 23,094

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 14, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $413.88 to $414.66, 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: 0001596532-24-000371 · edgardoc.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 23,244

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 14, 2024.