SEC Filing Summary

Bryan M. Lee, Chief Financial Officer of Five9, Inc., reported the sale of 6,500 shares of Common Stock on September 4, 2026, for $33.05 per share, under a Rule 10b5-1 trading plan. These sales were to cover taxes upon the vesting of restricted stock units. On the same date, an additional 7,813 shares were sold at a weighted average price of $33.52 and 4,995 shares at a weighted average price of $33.45, also to cover taxes. On September 8, 2026, 1,310 shares were sold at $32.60 per share. All transactions were directly owned. The sales were part of a pre-established trading plan and a withholding policy to cover taxes. The reporting person will provide further details on specific prices upon request.