Arista Networks (ANET) 4: Breithaupt Chantelle Yvette bought 10,920 shares of Common… (Feb 24, 2026)

=== 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: Breithaupt Chantelle Yvette CIK: 0001850596 Role: Officer (Senior Vice President, CFO) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +10,920 | Price: $0.00 Shares Owned After: 58,315 | 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. [Transaction #2] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +15,864 | Price: $0.00 Shares Owned After: 74,179 | 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. [Transaction #3] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +1,350 | Price: $0.00 Shares Owned After: 75,529 | 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. [Transaction #4] Security: Common Stock Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: +14,400 | Price: $0.00 Shares Owned After: 89,929 | 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. [Transaction #5] Security: Common Stock Date: 2026-02-20 | Code: F (Payment of exercise/tax) Shares: -20,305 | Price: $137.23 Total Value: $2,786,455.15 Shares Owned After: 69,624 | Ownership: D (Direct) Footnotes: [F2] Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units. --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Unit-1 Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -10,920 | Price: $0.00 Shares Owned After: 87,340 | 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. [F3] Twenty five percent (25%) of the restricted stock units awarded vested on Feb 20, 2025 and will continue to vest at a rate of six and one-quarter percent (6.25%) each quarter 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 of each year. [F3] Twenty five percent (25%) of the restricted stock units awarded vested on Feb 20, 2025 and will continue to vest at a rate of six and one-quarter percent (6.25%) each quarter 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 of each year. [Transaction #2] Security: Restricted Stock Unit-2 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. [F4] Six and one-quarter percent (6.25%) of the restricted stock units awarded vest 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. [F4] Six and one-quarter percent (6.25%) of the restricted stock units awarded vest 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 #3] Security: Restricted Stock Unit-3 Date: 2026-02-20 | Code: A (Grant or award) Shares: +15,864 | Price: $0.00 Shares Owned After: 15,864 | 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. [F5] 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. [F5] 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-3 Date: 2026-02-20 | Code: M (Exercise of derivative) Shares: -15,864 | 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. [F5] 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. [F5] 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 #5] Security: Restricted Stock Unit-7 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. [F6] 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. [F6] 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 #6] Security: Restricted Stock Unit-7 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. [F6] 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. [F6] 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. --- Footnotes (Complete Index) --- F1: Each restricted stock unit represents a contingent right to receive one share of Arista Networks, Inc. Common Stock upon vesting. F2: Represents shares withheld to satisfy tax withholding obligations on the vesting of restricted stock units. F3: Twenty five percent (25%) of the restricted stock units awarded vested on Feb 20, 2025 and will continue to vest at a rate of six and one-quarter percent (6.25%) each quarter 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 of each year. F4: Six and one-quarter percent (6.25%) of the restricted stock units awarded vest 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. F5: 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. F6: 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: Chantelle Breithaupt (2026-02-24)