Five9 (FIVN) officer sells 5,942 shares to cover RSU tax withholding

Rhea-AI Filing Summary

Five9, Inc. reported an insider transaction by Chief Administrative and Legal Officer Tiffany N. Meriweather. On March 4, 2026, she executed an open-market sale of 5,942 shares of Five9 common stock at a weighted average price of $17.87 per share.

According to the filing, this was a company-mandated sale to cover tax withholding obligations arising from the vesting and settlement of restricted stock units, and was not a discretionary trade. After this tax-related sale, she directly held 311,115 shares of Five9 common stock.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Meriweather Tiffany N.

(Last) (First) (Middle)

C/O FIVE9, INC.

3001 BISHOP DRIVE, SUITE 350

(Street)

SAN RAMON CA 94583

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Five9, Inc. [ FIVN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Admin. & Legal Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/04/2026		S		5,942(1)	D	$17.87(2)	311,115	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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

2. 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.

Remarks:

	/s/ Leena Mansharamani, Attorney in Fact	03/06/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Five9 (FIVN) report for Tiffany N. Meriweather?

Five9 reported that Chief Administrative and Legal Officer Tiffany N. Meriweather sold 5,942 shares of common stock on March 4, 2026. The sale was conducted in the open market at a weighted average price of $17.87 per share.

Why did Tiffany N. Meriweather sell Five9 (FIVN) shares in this Form 4 filing?

The shares were sold under a Five9-mandated transaction to cover tax withholding obligations related to the vesting and settlement of restricted stock units. The filing specifies that this was not a discretionary trade by the reporting person.

How many Five9 (FIVN) shares does Tiffany N. Meriweather hold after the reported sale?

After selling 5,942 shares, Tiffany N. Meriweather directly holds 311,115 shares of Five9 common stock. This post-transaction holding amount is disclosed in the filing as her direct ownership following the March 4, 2026 transaction.

What price was received for the Five9 (FIVN) shares sold in this insider transaction?

The filing reports a weighted average price of $17.87 per share for the 5,942 shares sold. A footnote explains that this price was applied by the broker across tax-cover sales for multiple employees on the transaction date.

Was the Five9 (FIVN) insider sale by Tiffany N. Meriweather a discretionary trade?

No. A footnote states the sale was a Five9-mandated transaction to satisfy tax withholding obligations from restricted stock unit vesting. The filing clarifies that it does not represent a discretionary trade by Tiffany N. Meriweather.

What do the footnotes reveal about the Five9 (FIVN) insider sale pricing?

The footnotes state the reported $17.87 is a weighted average price applied by the broker for tax-cover sales for all Five9 employees on that date, and the reporting person can provide detailed price breakdowns upon request.