Matthew E. Tuckness - 04 Mar 2026 Form 4 Insider Report for Five9, Inc. (FIVN)

Role: Chief Revenue Officer
Signature: /s/ Tiffany Meriweather, Attorney in Fact
Issuer symbol: FIVN
Transactions as of: 04 Mar 2026
Net transactions value: -$92,281
Form type: 4
Filing time: 06 Mar 2026, 16:06:26 UTC
Previous filing: 26 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Tuckness Matthew E.	Chief Revenue Officer	C/O FIVE9, INC., 3001 BISHOP DRIVE, SUITE 350, SAN RAMON	/s/ Tiffany Meriweather, Attorney in Fact	06 Mar 2026	0002080340

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FIVN	Common Stock	Sale	$92,281	-5,164	-1.7%	$17.87	290,137	04 Mar 2026	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The sale reported on this form represents a Five9, Inc. mandated sale by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units, and it does not represent a discretionary trade by the Reporting Person.
F2	The price reported in Column 4 is a weighted average price applied to the transaction by the broker for sales to cover taxes upon vesting of restricted stock units for all employees of Five9, Inc., including the Reporting Person, on the date such sales occurred. 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.

Content

The sale reported on this form represents a Five9, Inc. mandated sale by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of restricted stock units, and it does not represent a discretionary trade by the Reporting Person.

The price reported in Column 4 is a weighted average price applied to the transaction by the broker for sales to cover taxes upon vesting of restricted stock units for all employees of Five9, Inc., including the Reporting Person, on the date such sales occurred. 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.