Arista Networks (ANET)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-17 10b5-1 Pre-arranged Plan: Yes --- Issuer --- Name: Arista Networks, Inc. (ANET) CIK: 0001596532 --- Reporting Owner --- Name: Duda Kenneth CIK: 0001605808 Role: Director, Officer (President and CTO) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-03-17 | Code: M (Exercise of derivative) Shares: +32,000 | Price: $15.26 Total Value: $488,400.00 Shares Owned After: 44,976 | Ownership: D (Direct) Footnotes: [F1] 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 13, 2025. [Transaction #2] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -7,401 | Price: $133.03 Total Value: $984,588.33 Shares Owned After: 37,575 | Ownership: D (Direct) Footnotes: [F1] 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 13, 2025. [F2] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.47 to $133.4683, 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. [Transaction #3] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -14,005 | Price: $134.02 Total Value: $1,876,894.08 Shares Owned After: 23,570 | Ownership: D (Direct) Footnotes: [F1] 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 13, 2025. [F3] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.47 to $134.4696, 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. [Transaction #4] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -8,581 | Price: $134.88 Total Value: $1,157,396.70 Shares Owned After: 14,989 | Ownership: D (Direct) Footnotes: [F1] 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 13, 2025. [F4] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $134.475 to $135.4697, 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. [Transaction #5] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -2,013 | Price: $135.97 Total Value: $273,712.24 Shares Owned After: 12,976 | Ownership: D (Direct) Footnotes: [F1] 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 13, 2025. [F5] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $135.4874 to $136.41, 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. [Transaction #6] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -3,701 | Price: $133.03 Total Value: $492,360.68 Shares Owned After: 1,107,467 | Ownership: I (Indirect) | Nature: By Childrens' Trust Footnotes: [F6] The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 13, 2025. [F2] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.47 to $133.4683, 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] 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. [Transaction #7] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -7,003 | Price: $134.02 Total Value: $938,514.05 Shares Owned After: 1,100,464 | Ownership: I (Indirect) | Nature: By Childrens' Trust Footnotes: [F6] The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 13, 2025. [F3] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.47 to $134.4696, 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] 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. [Transaction #8] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -4,290 | Price: $134.88 Total Value: $578,630.91 Shares Owned After: 1,096,174 | Ownership: I (Indirect) | Nature: By Childrens' Trust Footnotes: [F6] The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 13, 2025. [F4] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $134.475 to $135.4697, 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] 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. [Transaction #9] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -1,006 | Price: $135.97 Total Value: $136,788.13 Shares Owned After: 1,095,168 | Ownership: I (Indirect) | Nature: By Childrens' Trust Footnotes: [F6] The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 13, 2025. [F5] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $135.4874 to $136.41, 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] 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. [Transaction #10] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -2,313 | Price: $133.03 Total Value: $307,708.80 Shares Owned After: 510,087 | Ownership: I (Indirect) | Nature: By Foundation Footnotes: [F8] The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 13, 2025 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. [F2] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.47 to $133.4683, 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. [F9] These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. [Transaction #11] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -4,377 | Price: $134.02 Total Value: $586,588.03 Shares Owned After: 505,710 | Ownership: I (Indirect) | Nature: By Foundation Footnotes: [F8] The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 13, 2025 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. [F3] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.47 to $134.4696, 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. [F9] These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. [Transaction #12] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -2,681 | Price: $134.88 Total Value: $361,610.60 Shares Owned After: 503,029 | Ownership: I (Indirect) | Nature: By Foundation Footnotes: [F8] The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 13, 2025 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. [F4] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $134.475 to $135.4697, 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. [F9] These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. [Transaction #13] Security: Common Stock Date: 2026-03-17 | Code: S (Open market sale) Shares: -629 | Price: $135.97 Total Value: $85,526.58 Shares Owned After: 502,400 | Ownership: I (Indirect) | Nature: By Foundation Footnotes: [F8] The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 13, 2025 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. [F5] The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $135.4874 to $136.41, 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. [F9] These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. --- Derivative Transactions --- [Transaction #1] Security: Non-Qualified Stock Option (right to buy) Date: 2026-03-17 | Code: M (Exercise of derivative) Shares: -32,000 | Price: $0.00 Exercisable: N/A | Expires: 2028-04-12 Shares Owned After: 64,000 | Ownership: D (Direct) Footnotes: [F1] 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 13, 2025. [F13] 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. --- Holdings --- [Holding #1] Security: Common Stock Ownership: I (Indirect) Footnotes: [F10] Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. [Holding #2] Security: Common Stock Ownership: I (Indirect) Footnotes: [F11] Reporting person is the trustee of the Kenneth Duda Annuity Trusts. [Holding #3] Security: Common Stock Ownership: I (Indirect) Footnotes: [F12] These shares are held by a family trust for which the reporting person is co-trustee. --- Footnotes (Complete Index) --- F1: 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 13, 2025. F10: Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F11: Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F12: These shares are held by a family trust for which the reporting person is co-trustee. F13: 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. F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.47 to $133.4683, 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: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $133.47 to $134.4696, 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. F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $134.475 to $135.4697, 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: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $135.4874 to $136.41, 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. F6: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into by the reporting person for the benefit of the reporting person's children on March 13, 2025. F7: 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. F8: The sale of shares was effected pursuant to a Rule 10b5-1 trading plan entered into on March 13, 2025 by the reporting person's 501(c) Foundation, for which the reporting person and his spouse serve as co-trustee. F9: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. --- Signature --- /s/ By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda (2026-03-19)