Five9, Inc. — Director's Dealing 2017

May 24, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Five9, Inc. (FIVN)
CIK: 0001288847
Period of Report: 2017-05-22

Reporting Person: WELCH SCOTT (EVP, Cloud Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-05-22	Common Stock	M	24194	$4.25	Acquired	174913	Direct
2017-05-22	Common Stock	M	21171	$8.13	Acquired	196084	Direct
2017-05-22	Common Stock	S	45365	$21.61	Disposed	150719	Direct
2017-05-23	Common Stock	M	306	$4.25	Acquired	151025	Direct
2017-05-23	Common Stock	S	306	$21.86	Disposed	150719	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-05-22	Employee Stock Option (right to buy)	$4.25	M	24194	Disposed	2024-11-05	Common Stock (24194.0)	Direct
2017-05-22	Employee Stock Option (right to buy)	$8.13	M	21171	Disposed	2026-03-09	Common Stock (21171.0)	Direct
2017-05-23	Employee Stock Option (right to buy)	$4.25	M	306	Disposed	2024-11-05	Common Stock (306.0)	Direct

Footnotes

F1: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 22, 2017.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.37 to $21.85, inclusive. The reporting person undertakes to provide Five9, Inc., any security holder of Five9, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F3: The option vests in 48 equal monthly installments beginning on the one month anniversary of November 5, 2014.

F4: The option vests in 48 equal monthly installments beginning on the one month anniversary of March 9, 2016.