ANET · Arista Networks, Inc. · Insider Trading

Represents an aggregate of 57,232 shares transferred by the GRAT of the reporting person (28,616) and the GRAT of the reporting person's spouse (28,616) to the Family Trust.

These shares are held by a family trust for which the reporting person is co-trustee.

Represents 28,616 shares from the Jennifer Duda Annuity Trust to the Kenneth and Jennifer Duda Living Trust.

Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.

Represents 28,616 shares from the Kenneth Duda Annuity Trust to the Kenneth and Jennifer Duda Living Trust.

Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

Represents an aggregate of 200,000 shares contributed to the GRAT of the Reporting Person (100,000 shares), and GRAT of the Reporting Person's spouse (100,000 shares)

These shares are held by a family trust for which the reporting person is co-trustee.

Represents 100,000 shares transferred from the Family Trust to the GRAT of the Reporting Person.

Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

Represents 100,000 shares transferred from the Family Trust to the GRAT of the Reporting Person's Spouse.

Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $198.03 to $198.96, 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.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $194.81 to $195.67, 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.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.21 to $199.38, 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.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $197.01 to $197.97, 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.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 9, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $195.81 to $196.70, 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.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on December 11, 2025 and modified on June 2, 2026.

Represents 42,937 shares from the Jennifer Duda Annuity Trust to the Childrens Trust.

Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.

Represents 85,875 shares from the Jennifer Duda Annuity Trust to the Children's Trust.

These shares are held in multiple trusts for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.

Represents 42,938 shares from the Kenneth Duda Annuity Trust to the Childrens Trust.

Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

Represents 85,875 shares from the Ken Duda Annuity Trust to the Children's Trust.

These shares are held in multiple trusts for the benefit of the children of the reporting person for which the reporting person serves as trustee. The reporting person shares voting and investment control over the shares but disclaims beneficial ownership of the shares.

Represents an aggregate of 102,320 shares transferred by the GRAT of the reporting person (51,160) and the GRAT of the reporting person's spouse (51,160) to the Family Trust.

These shares are held by a family trust for which the reporting person is co-trustee.

Represents 42,938 shares from the Jennifer Duda Annuity Trust to the Childrens Trust.

Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.

Represents 42,937 shares from the Kenneth Duda Annuity Trust to the Childrens Trust.

Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

Represents 51,160 shares from the Kenneth Duda Annuity Trust to the Kenneth and Jennifer Duda Living Trust.

Reporting person is the trustee of the Kenneth Duda Annuity Trusts.

Represents 51,160 shares from the Jennifer Duda Annuity Trust to the Kenneth and Jennifer Duda Living Trust.

Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts.

The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $202.25 to $203.2475, 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.

These shares are held by a family trust for which the reporting person is a trustee.

The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.25 to $202.245, 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.

These shares are held by a family trust for which the reporting person is a trustee.

The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $199.25 to $200.24, 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.

These shares are held by a family trust for which the reporting person is a trustee.

The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $204.25 to $205.24, 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.

These shares are held by a family trust for which the reporting person is a trustee.

The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $200.25 to $201.245, 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.

These shares are held by a family trust for which the reporting person is a trustee.

The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $205.25 to $205.53, 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.

These shares are held by a family trust for which the reporting person is a trustee.

The exercise and/or sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on February 20, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $203.25 to $204.24, 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.

These shares are held by a family trust for which the reporting person is a trustee.

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 November 14, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $192.52 to $192.85, 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.

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 November 14, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $190.51 to $191.495, 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.

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 November 14, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $191.51 to $192.50, 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.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 10, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $185.17 to $186.12, inclusive. The reporting person undertakes to provide Arista Networks, Inc., any security holder of Arista Networks, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 10, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $188.45 to $189.24, 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.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 10, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $187.35 to $188.32, 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.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 10, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $186.32 to $187.31, 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.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person on June 10, 2025.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.12 to $185.11, 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.

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

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

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

The reporting person was granted RSUs on May 29, 2026. 1/4th of the shares vest on August 20, 2026 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.

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 11, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $183.72 to $184.7176, 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.

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 11, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.72 to $185.719, 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.

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

These shares are held by a family trust for which the reporting person is co-trustee.

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 11, 2026.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $185.7311 to $186.7213, 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.

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

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.

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

This performance stock award was granted in the second quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

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

This performance stock award was granted in the second quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026.

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

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

Six and one-quarter percent (6.25%) of the restricted stock units awarded vested 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.

The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 11, 2026 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $185.7311 to $186.7213, 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.

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

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