Form 4 Filing for Five9, Inc.

This filing details stock transactions by Leena Mansharamani, SVP, Chief Accounting Officer of Five9, Inc. On September 3, 2026, 2558 shares of Common Stock were sold at a weighted average price of $34.19, followed by a sale of 100 shares at $35.05. On September 4, 2026, 2505 shares were sold at a weighted average price of $33.32, and an additional 201 shares were sold at a weighted average price of $33.71. On September 8, 2026, 1253 shares were sold at a weighted average price of $31.53. All sales were conducted under a Rule 10b5-1 trading plan. Some sales were to cover taxes upon the vesting of restricted stock units. Post-transaction, Mansharamani owns 52,417 shares.