0001288847 2026-06-04 2026-06-04 0001288847 1 2026-06-04 2026-06-04 iso4217:USD pure shares S-8 S-8 EX-FILING FEES 0001288847 Five9, Inc. N/A false S-8 Five9, Inc. Equity Common stock, par value $0.001 per share true 2900000 24.12 69948000.00 0.0001381 9659.82 69948000.00 9659.82 0.00 9659.82 (1) Pursuant to Rule 416(a) of the Securities Act of 1933 (the "Securities Act"), this Registration Statement also covers such indeterminable number of additional shares of common stock, par value $0.001 per share (the "Common Stock"), that become issuable under the Five9, Inc. 2026 Inducement Equity Incentive Plan (the "Plan"), by reason of any stock dividend, stock split, recapitalization of any other similar transaction effected that results in an increase to the number of outstanding shares of Common Stock. (2) Estimated in accordance with Rule 457(c) and Rule 457 (h) under the Securities Act, solely for the purpose of calculating the registration fee, based on the average of the $24.83 (high) and $23.40 (low) sales prices of the Common Stock as reported on The NASDAQ Global Select Market on June 3, 2026, which date is within five business days prior to the date of filing of this Registration Statement.