ANET

SEC source: 0001596532-24-000317 · edgardoc.xml · nonDerivative · entry 13

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,594

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.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $356.28 to $356.75, 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: 0001596532-24-000317 · edgardoc.xml · nonDerivative · entry 12

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,779

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.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $355.25 to $356.07, 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: 0001596532-24-000317 · edgardoc.xml · nonDerivative · entry 11

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,347

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.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $353.125 to $353.75, 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: 0001596532-24-000317 · 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: 4,732

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 $352.025 to $352.945, 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: 0001596532-24-000317 · 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: 5,654

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 $351.00 to $351.99, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001596532-24-000317 · 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: 6,354

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: 0001596532-24-000317 · 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: 6,404

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 $347.64 to $348.57, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001596532-24-000317 · 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: 6,936

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 $346.63 to $347.62, 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.

SEC source: 0001596532-24-000317 · 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: 9,714

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 $345.57 to $346.565, 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: 0001596532-24-000317 · 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: 11,203

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 $344.57 to $345.555, 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: 0001596532-24-000317 · 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: 16,270

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 $343.57 to $344.565, 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: 0001596532-24-000317 · 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: 21,625

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 $342.57 to $343.55, 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: 0001596532-24-000317 · 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.

SEC source: 0001596532-24-000318 · edgardoc.xml · derivative · entry 14

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 20,000 shares

Expires 2024-12-15

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.

F14 · 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.

F15 · derivative.exercise_date: 1/5th of the shares subject to the option shall vested one year after December 1, 2016 and 1/60th of the shares subject to the option vested each month thereafter provided that the reporting person continues to be a service provider to the Issuer as of each vest date.

SEC source: 0001596532-24-000318 · edgardoc.xml · nonDerivative · entry 10

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 186,600

F1 · 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 · 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: 0001596532-24-000318 · edgardoc.xml · nonDerivative · entry 9

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 186,670

F1 · 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.

F10 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $356.28 to $356.75, 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 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000318 · edgardoc.xml · nonDerivative · entry 8

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 186,706

F1 · 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 $355.25 to $356.07, 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 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000318 · edgardoc.xml · nonDerivative · entry 7

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 186,820

F1 · 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 $353.125 to $353.75, 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 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000318 · edgardoc.xml · nonDerivative · entry 6

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 186,897

F1 · 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 $352.025 to $352.945, 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 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000318 · edgardoc.xml · nonDerivative · entry 5

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 187,081

F1 · 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 $351.00 to $351.99, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · 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: 0001596532-24-000318 · edgardoc.xml · nonDerivative · entry 4

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 187,221

F1 · 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 · 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: 0001596532-24-000318 · edgardoc.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 187,231

F1 · 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 $347.64 to $348.57, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3 · 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: 0001596532-24-000318 · edgardoc.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 187,338

F1 · 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 $346.63 to $347.62, 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 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000318 · edgardoc.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Indirect · By Foundation

Disclosed balance after: 187,894

F1 · 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 $345.57 to $346.565, 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 501(c) Foundation for which the reporting person and his spouse serve as co-trustee.

SEC source: 0001596532-24-000313 · edgardoc.xml · nonDerivative · entry 3

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 72

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, 2023.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $355.38 to $356.00, 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 co-trustee.

SEC source: 0001596532-24-000313 · edgardoc.xml · nonDerivative · entry 2

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 537

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, 2023.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $354.18 to $355.11, 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.

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

SEC source: 0001596532-24-000313 · 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: 1,547

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, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $353.06 to $353.99, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0001596532-24-000314 · edgardoc.xml · nonDerivative · entry 5

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,681

F1 · 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 December 13, 2023.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $356.85 to $356.86, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001596532-24-000314 · edgardoc.xml · nonDerivative · entry 4

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,881

F1 · 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 December 13, 2023.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $355.71 to $356.14, 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: 0001596532-24-000314 · edgardoc.xml · nonDerivative · entry 3

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,080

F1 · 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 December 13, 2023.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $354.62 to $355.39, 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: 0001596532-24-000314 · edgardoc.xml · nonDerivative · entry 2

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 23,291

F1 · 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 December 13, 2023.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $353.57 to $354.55, 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: 0001596532-24-000314 · edgardoc.xml · nonDerivative · entry 1

Ullal Jayshree · CIK 0001605809 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,413

F1 · 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 December 13, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $352.54 to $353.52, 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: 0001596532-24-000301 · edgardoc.xml · derivative · entry 2

Battles Kelly Bodnar · CIK 0001817763 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 634

Underlying: Common Stock · 211 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 7, 2024. 1/4th of the shares vest on August 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, or November 20.

F2 · derivative.expiration_date: The reporting person was granted RSUs on June 7, 2024. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-24-000301 · edgardoc.xml · nonDerivative · entry 1

Battles Kelly Bodnar · CIK 0001817763 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,937

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: 0001596532-24-000302 · edgardoc.xml · derivative · entry 2

CHEW LEWIS · CIK 0001224994 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 634

Underlying: Common Stock · 211 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 7, 2024. 1/4th of the shares vest on August 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, or November 20.

F2 · derivative.expiration_date: The reporting person was granted RSUs on June 7, 2024. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-24-000302 · edgardoc.xml · nonDerivative · entry 1

CHEW LEWIS · CIK 0001224994 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,203

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: 0001596532-24-000303 · edgardoc.xml · derivative · entry 3

Giancarlo Charles H · CIK 0001299634 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 634

Underlying: Common Stock · 211 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 7, 2024. 1/4th of the shares vest on August 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, or November 20.

F3 · derivative.expiration_date: The reporting person was granted RSUs on June 7, 2024. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-24-000303 · edgardoc.xml · nonDerivative · entry 1

Giancarlo Charles H · CIK 0001299634 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,275

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: 0001596532-24-000304 · edgardoc.xml · derivative · entry 2

Scheinman Daniel · CIK 0001605698 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 634

Underlying: Common Stock · 211 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 7, 2024. 1/4th of the shares vest on August 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, or November 20.

F2 · derivative.expiration_date: The reporting person was granted RSUs on June 7, 2024. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-24-000304 · edgardoc.xml · nonDerivative · entry 1

Scheinman Daniel · CIK 0001605698 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,943

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: 0001596532-24-000305 · edgardoc.xml · derivative · entry 3

TEMPLETON MARK B · CIK 0001201938 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 634

Underlying: Common Stock · 211 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 7, 2024. 1/4th of the shares vest on August 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, or November 20.

F3 · derivative.expiration_date: The reporting person was granted RSUs on June 7, 2024. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-24-000305 · edgardoc.xml · nonDerivative · entry 1

TEMPLETON MARK B · CIK 0001201938 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,863

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: 0001596532-24-000306 · edgardoc.xml · derivative · entry 2

Wassenaar Yvonne · CIK 0001707744 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 634

Underlying: Common Stock · 211 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 7, 2024. 1/4th of the shares vest on August 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, or November 20.

F2 · derivative.expiration_date: The reporting person was granted RSUs on June 7, 2024. 1/4th of the shares vest on August 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, or November 20.

SEC source: 0001596532-24-000306 · edgardoc.xml · nonDerivative · entry 1

Wassenaar Yvonne · CIK 0001707744 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,187

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

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

SEC source: 0001596532-24-000307 · edgardoc.xml · derivative · entry 18

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,736

Underlying: Common Stock · 970 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: 0001596532-24-000307 · edgardoc.xml · derivative · entry 17

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,136

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: 0001596532-24-000307 · edgardoc.xml · derivative · entry 16

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,328

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: 0001596532-24-000307 · edgardoc.xml · derivative · entry 15

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

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.

SEC source: 0001596532-24-000307 · edgardoc.xml · derivative · entry 14

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,248 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 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.

F9 · 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: 0001596532-24-000307 · edgardoc.xml · derivative · entry 13

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,479

Underlying: Common Stock · 1,037 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 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.

F8 · 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.