Arista Networks (ANET)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-02-20 10b5-1 Pre-arranged Plan: No --- 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: 2026-02-20 | Code: M (Exercise of derivative) Shares: +3,880 | Price: $0.00 Shares Owned After: 38,963 | Ownership: I (Indirect) | Nature: by Trust Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F2] These shares are held by a family trust for which the reporting person is co-trustee. [Transaction #2] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +4,148 | Price: $0.00 Shares Owned After: 43,111 | Ownership: I (Indirect) | Nature: by Trust Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F2] These shares are held by a family trust for which the reporting person is co-trustee. [Transaction #3] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +44,240 | Price: $0.00 Shares Owned After: 87,351 | Ownership: I (Indirect) | Nature: by Trust Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F2] These shares are held by a family trust for which the reporting person is co-trustee. [Transaction #4] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +1,836 | Price: $0.00 Shares Owned After: 89,187 | Ownership: I (Indirect) | Nature: by Trust Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F2] These shares are held by a family trust for which the reporting person is co-trustee. [Transaction #5] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +19,816 | Price: $0.00 Shares Owned After: 109,003 | Ownership: I (Indirect) | Nature: by Trust Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F2] These shares are held by a family trust for which the reporting person is co-trustee. [Transaction #6] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +1,350 | Price: $0.00 Shares Owned After: 110,353 | Ownership: I (Indirect) | Nature: by Trust Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F2] These shares are held by a family trust for which the reporting person is co-trustee. [Transaction #7] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +14,400 | Price: $0.00 Shares Owned After: 124,753 | Ownership: I (Indirect) | Nature: by Trust Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F2] These shares are held by a family trust for which the reporting person is co-trustee. [Transaction #8] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +19,576 | Price: $0.00 Shares Owned After: 144,329 | Ownership: I (Indirect) | Nature: by Trust Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F2] These shares are held by a family trust for which the reporting person is co-trustee. [Transaction #9] Security: Common Stock Date: 2026-02-20 | Code: F (Payment of exercise/tax) Shares: -54,823 | Price: $137.23 Total Value: $7,523,360.29 Shares Owned After: 89,506 | Ownership: I (Indirect) | Nature: by Trust Footnotes: [F3] Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units. [F2] These shares are held by a family trust for which the reporting person is co-trustee. --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Unit - 17 Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -1,350 | Price: $0.00 Shares Owned After: 20,250 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F8] Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 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, and November 20 of each year. [F8] Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 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, and November 20 of each year. [Transaction #2] Security: Restricted Stock Unit - 18 Date: 2026-02-20 | Code: A (Grant or award) Shares: +19,576 | Price: $0.00 Shares Owned After: 19,576 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F9] This performance stock award was granted in the first quarter of 2024 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026. [F9] This performance stock award was granted in the first quarter of 2024 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026. [Transaction #3] Security: Restricted Stock Unit - 18 Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -19,576 | Price: $0.00 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F9] This performance stock award was granted in the first quarter of 2024 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026. [F9] This performance stock award was granted in the first quarter of 2024 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026. [Transaction #4] Security: Restricted Stock Unit - 19 Date: 2026-02-20 | Code: A (Grant or award) Shares: +14,400 | Price: $0.00 Shares Owned After: 14,400 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F10] This performance stock award was granted in the first quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026. [F10] This performance stock award was granted in the first quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026. [Transaction #5] Security: Restricted Stock Unit - 19 Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -14,400 | Price: $0.00 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F10] This performance stock award was granted in the first quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026. [F10] This performance stock award was granted in the first quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026. [Transaction #6] Security: Restricted Stock Unit-11 Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -4,148 | Price: $0.00 Shares Owned After: 29,032 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F11] Six and one-quarter percent (6.25%) of the restricted stock units awarded vested 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. [F11] Six and one-quarter percent (6.25%) of the restricted stock units awarded vested 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. [Transaction #7] Security: Restricted Stock Unit-13 Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -1,836 | Price: $0.00 Shares Owned After: 20,184 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F12] Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 20, 2025 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] Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 20, 2025 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. [Transaction #8] Security: Restricted Stock Unit-14 Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -19,816 | Price: $0.00 Shares Owned After: 356,688 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F13] Five percent (5%) of the restricted stock awarded vested on November 20, 2025 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] Five percent (5%) of the restricted stock awarded vested on November 20, 2025 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. [Transaction #9] Security: Restricted Stock Unit-16 Date: 2026-02-20 | Code: A (Grant or award) Shares: +44,240 | Price: $0.00 Shares Owned After: 44,240 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F14] 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 on February 20, 2026. [F14] 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 on February 20, 2026. [Transaction #10] Security: Restricted Stock Unit-16 Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -44,240 | Price: $0.00 Shares Owned After: 0 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F14] 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 on February 20, 2026. [F14] 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 on February 20, 2026. [Transaction #11] Security: Restricted Stock Unit-8 Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -3,880 | Price: $0.00 Shares Owned After: 11,648 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. [F15] 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. [F15] 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. --- Holdings --- [Holding #1] Security: Common Stock Ownership: D (Direct) [Holding #2] Security: Common Stock Ownership: I (Indirect) Footnotes: [F4] 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. [Holding #3] Security: Common Stock Ownership: I (Indirect) Footnotes: [F5] These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. [Holding #4] Security: Common Stock Ownership: I (Indirect) Footnotes: [F6] Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. [Holding #5] Security: Common Stock Ownership: I (Indirect) Footnotes: [F7] Reporting person is the trustee of the Kenneth Duda Annuity Trusts. --- Footnotes (Complete Index) --- F1: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. F10: This performance stock award was granted in the first quarter of 2025 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026. F11: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested 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. F12: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 20, 2025 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: Five percent (5%) of the restricted stock awarded vested on November 20, 2025 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. F14: 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 on February 20, 2026. F15: 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. F2: These shares are held by a family trust for which the reporting person is co-trustee. F3: Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units. F4: 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. F5: These shares are held by a 501(c) Foundation for which the reporting person and his spouse serve as co-trustee. F6: Reporting person's spouse is the trustee of the Jennifer Duda Annuity Trusts. F7: Reporting person is the trustee of the Kenneth Duda Annuity Trusts. F8: Six and one-quarter percent (6.25%) of the restricted stock units awarded vested on February 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, and November 20 of each year. F9: This performance stock award was granted in the first quarter of 2024 and was earned based on attainment of certain performance conditions. The award vested on February 20, 2026. --- Signature --- /s/ By: Isabelle Bertin-Bailly, Attorney-in-Fact For: Kenneth Duda (2026-02-24)