ANET

SEC source: 0001596532-22-000108 · edgardoc.xml · nonDerivative · entry 7

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Foundation

Disclosed balance after: 275,600

F5 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 13, 2021 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 $129.38 to $129.83, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0001596532-22-000108 · edgardoc.xml · nonDerivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Foundation

Disclosed balance after: 276,000

F5 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 13, 2021 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 $128.20 to $129.19, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0001596532-22-000108 · edgardoc.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Foundation

Disclosed balance after: 277,038

F5 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 13, 2021 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 $127.20 to $128.19, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0001596532-22-000108 · edgardoc.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,367

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 12, 2021.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $129.14 to $129.92, 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: 0001596532-22-000108 · edgardoc.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,086

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 12, 2021.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.11 to $129.07, 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: 0001596532-22-000108 · edgardoc.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,060

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 12, 2021.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $127.11 to $128.10, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0001596532-22-000108 · edgardoc.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,367

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 12, 2021.

SEC source: 0001596532-22-000104 · edgardoc.xml · nonDerivative · entry 3

Giancarlo Charles H · CIK 0001299634 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 125,586

F1 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 12, 2021.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $139.75 to $140.35, 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: 0001596532-22-000104 · edgardoc.xml · nonDerivative · entry 2

Giancarlo Charles H · CIK 0001299634 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 125,986

F1 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 12, 2021.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $138.75 to $139.48, 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: 0001596532-22-000104 · edgardoc.xml · nonDerivative · entry 1

Giancarlo Charles H · CIK 0001299634 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 129,286

F1 · kind: This sale was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 12, 2021.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $137.74 to $138.72, 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: 0001596532-22-000105 · edgardoc.xml · derivative · entry 9

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,168

Underlying: Common Stock · 164 shares

Expires 2028-11-08

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

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

F6 · derivative.exercise_date: 1/48th of the shares subject to the option vested and became exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.

SEC source: 0001596532-22-000105 · edgardoc.xml · derivative · entry 8

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,416

Underlying: Common Stock · 416 shares

Expires 2028-04-12

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

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

F5 · derivative.exercise_date: 1/48th of the shares subject to the option vested and became exercisable on June 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.

SEC source: 0001596532-22-000105 · edgardoc.xml · derivative · entry 7

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,916

Underlying: Common Stock · 416 shares

Expires 2029-02-07

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

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

F4 · derivative.exercise_date: 1/48th of the shares subject to the option vested and became exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.

SEC source: 0001596532-22-000105 · edgardoc.xml · derivative · entry 6

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 332 shares

Expires 2027-04-16

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

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

F3 · derivative.exercise_date: 1/5th of the shares subject to the option vested and became exercisable on March 20, 2018 and 1/60th of the shares subject to the option shall vest each month thereafter.

SEC source: 0001596532-22-000105 · edgardoc.xml · nonDerivative · entry 5

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 166

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

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

SEC source: 0001596532-22-000105 · edgardoc.xml · nonDerivative · entry 4

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 1,494

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

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

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

SEC source: 0001596532-22-000105 · edgardoc.xml · nonDerivative · entry 3

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 1,078

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

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

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

SEC source: 0001596532-22-000105 · edgardoc.xml · nonDerivative · entry 2

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 914

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

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

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

SEC source: 0001596532-22-000105 · edgardoc.xml · nonDerivative · entry 1

McCool John F · CIK 0001701967 · Chief Platform Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 498

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

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

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

SEC source: 0001596532-22-000106 · edgardoc.xml · derivative · entry 7

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,460

Underlying: Common Stock · 208 shares

Expires 2028-11-08

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

F1 · kind: The exercise and sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on September 15, 2021.

F4 · derivative.exercise_date: 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.

SEC source: 0001596532-22-000106 · edgardoc.xml · derivative · entry 6

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,416

Underlying: Common Stock · 416 shares

Expires 2028-04-12

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

F1 · kind: The exercise and sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on September 15, 2021.

F3 · derivative.exercise_date: 1/48th of the shares subject to the option shall vest and become exercisable on June 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.

SEC source: 0001596532-22-000106 · edgardoc.xml · derivative · entry 5

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,916

Underlying: Common Stock · 416 shares

Expires 2029-02-07

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

F1 · kind: The exercise and sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on September 15, 2021.

F2 · derivative.exercise_date: 1/48th of the shares subject to the option shall vest and become exercisable on December 1, 2020 and 1/48th of the shares subject to the option shall continue to vest each month thereafter.

SEC source: 0001596532-22-000106 · edgardoc.xml · nonDerivative · entry 4

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: The exercise and sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on September 15, 2021.

SEC source: 0001596532-22-000106 · edgardoc.xml · nonDerivative · entry 3

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,040

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

F1 · kind: The exercise and sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on September 15, 2021.

SEC source: 0001596532-22-000106 · edgardoc.xml · nonDerivative · entry 2

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 624

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

F1 · kind: The exercise and sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on September 15, 2021.

SEC source: 0001596532-22-000106 · edgardoc.xml · nonDerivative · entry 1

Taxay Marc · CIK 0001672685 · SVP and General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 416

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

F1 · kind: The exercise and sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on September 15, 2021.

SEC source: 0001596532-22-000098 · edgardoc.xml · nonDerivative · entry 7

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Foundation

Disclosed balance after: 279,100

F3 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 13, 2021 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 $120.77 to $121.24, 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.

F5 · 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: 0001596532-22-000098 · edgardoc.xml · nonDerivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Foundation

Disclosed balance after: 279,400

F3 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 13, 2021 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 $119.75 to $120.36, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F5 · 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: 0001596532-22-000098 · edgardoc.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Foundation

Disclosed balance after: 280,400

F3 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 13, 2021 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.

F5 · 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: 0001596532-22-000098 · edgardoc.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Foundation

Disclosed balance after: 280,500

F3 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 13, 2021 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 $117.32 to $118.22, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F5 · 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: 0001596532-22-000098 · edgardoc.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Foundation

Disclosed balance after: 280,800

F3 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 13, 2021 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 $115.57 to $116.50, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F5 · 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: 0001596532-22-000098 · edgardoc.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Foundation

Disclosed balance after: 281,300

F3 · kind: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on December 13, 2021 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 $114.25 to $115.17, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F5 · 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: 0001596532-22-000098 · edgardoc.xml · nonDerivative · entry 10

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

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 174,386

F14 · kind: Represents an aggregate of 121,122 shares contributed from the GRAT of the Reporting Person (60,561 shares), and GRAT of the Reporting Person's spouse (60,561 shares) to the Family Trust.

F15 · ownership.nature: These shares are held by a family trust for which the reporting person is co-trustee.

SEC source: 0001596532-22-000098 · edgardoc.xml · nonDerivative · entry 9

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT KD

Disclosed balance after: 373,056

F12 · kind: Represents an aggregate of 191,016 shares contributed from the GRAT of the Reporting Person to the Childrens Trust (130,455 shares), and to the family Trust (60,561 shares).

F13 · ownership.nature: Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

SEC source: 0001596532-22-000098 · edgardoc.xml · nonDerivative · entry 8

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By GRAT JD

Disclosed balance after: 373,056

F10 · kind: Represents an aggregate of 191,016 shares contributed from the GRAT of the Reporting Persons spouse to the Childrens Trust (130,455 shares), and to the family Trust (60,561 shares).

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

SEC source: 0001596532-22-000098 · edgardoc.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Childrens' Trust

Disclosed balance after: 264,462

F1 · kind: Represents an aggregate of 260,910 shares contributed from the GRAT of the Reporting Person (130,455 shares), and GRAT of the Reporting Person's spouse (130,455 shares) to the Children's Trusts.

F2 · 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: 0001596532-22-000096 · edgardoc.xml · derivative · entry 11

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 40,000 shares

Expires 2024-01-12

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

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 12, 2021.

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

SEC source: 0001596532-22-000096 · edgardoc.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,367

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 12, 2021.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $121.01 to $121.71, 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: 0001596532-22-000096 · edgardoc.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,567

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 12, 2021.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $120.01 to $121.00, 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.

SEC source: 0001596532-22-000096 · edgardoc.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,841

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 12, 2021.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $119.01 to $120.00, 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.

SEC source: 0001596532-22-000096 · edgardoc.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,067

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 12, 2021.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $118.00 to $118.99, 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: 0001596532-22-000096 · edgardoc.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,367

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 12, 2021.

SEC source: 0001596532-22-000094 · edgardoc.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 46,920,000

F1 · kind: The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 14, 2021.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $121.53 to $121.61, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0001596532-22-000094 · edgardoc.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 46,921,300

F1 · kind: The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 14, 2021.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $120.53 to $121.52, 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.

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

SEC source: 0001596532-22-000094 · edgardoc.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 46,963,135

F1 · kind: The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 14, 2021.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $119.53 to $120.525, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0001596532-22-000094 · edgardoc.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 46,979,059

F1 · kind: The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 14, 2021.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $118.53 to $119.52, 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.

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

SEC source: 0001596532-22-000094 · edgardoc.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 46,995,394

F1 · kind: The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 14, 2021.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $117.53 to $118.525, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0001596532-22-000092 · edgardoc.xml · nonDerivative · entry 12

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

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 47,020,000

F1 · kind: The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 14, 2021.

F14 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $117.47 to $118.40, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0001596532-22-000092 · edgardoc.xml · nonDerivative · entry 11

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

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 47,023,100

F1 · kind: The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 14, 2021.

F13 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.44 to $117.40, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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

SEC source: 0001596532-22-000092 · edgardoc.xml · nonDerivative · entry 10

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

10b5-1 filing: Not disclosed

Ownership: Indirect · by Trust

Disclosed balance after: 47,028,923

F1 · kind: The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 14, 2021.

F12 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.44 to $116.43, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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