Five9 (NASDAQ: FIVN) SVP discloses tax-withholding stock sales under 10b5-1

Rhea-AI Filing Summary

Five9, Inc.'s Senior Vice President and Chief Accounting Officer reported multiple small sales of company common stock on December 4, 2025. She sold 617, 1,187 and 1,147 shares at weighted-average prices of $20.35, $20.28 and $20.58, respectively, and now directly holds 38,571 shares.

The filing explains that these sales were mandated by Five9 to cover tax withholding obligations arising from the vesting and settlement of restricted stock units. The transactions were executed pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on December 10, 2024, and are characterized as non-discretionary rather than voluntary open-market trades.

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

OMB APPROVAL

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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).

X

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^*

Mansharamani Leena

(Last) (First) (Middle)

C/O FIVE9, INC.

3001 BISHOP DR., STE. #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)
	SVP, Chief Accounting Officer

3. Date of Earliest Transaction (Month/Day/Year)
12/04/2025

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	12/04/2025		S		617(1)	D	$20.35(2)	40,905	D
Common Stock	12/04/2025		S		1,187(3)(4)	D	$20.28(5)	39,718	D
Common Stock	12/04/2025		S		1,147(3)	D	$20.58(6)	38,571	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.

3. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2024.

4. The reported sales were to cover taxes upon the vesting of restricted stock units.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.18 to $20.42, 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.

6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.42 to $20.73, 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.

Remarks:

	/s/ Tiffany Meriweather, Attorney in Fact	12/05/2025
	** 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 stock transactions did Five9 (FIVN) report in this Form 4?

The report shows the SVP and Chief Accounting Officer of Five9, Inc. sold 617, 1,187 and 1,147 shares of common stock on December 4, 2025, at weighted-average prices of $20.35, $20.28 and $20.58, respectively.

Who is the reporting person in the Five9 (FIVN) Form 4 and what is their role?

The reporting person is an officer of Five9, Inc., serving as Senior Vice President and Chief Accounting Officer, and is treated as a reporting insider for these equity transactions.

Why were the Five9 (FIVN) shares sold according to the filing?

The filing states that the sales were mandated by Five9 to cover tax withholding obligations related to the vesting and settlement of restricted stock units, rather than optional sales initiated by the officer.

Were the Five9 (FIVN) stock sales discretionary trades by the insider?

No. The filing explains that the sale to cover taxes was mandated by Five9 and "does not represent a discretionary trade" by the reporting person, but instead was linked to restricted stock unit vesting.

How many Five9 (FIVN) shares does the insider own after these transactions?

After the reported sales, the officer directly beneficially owns 38,571 shares of Five9 common stock, as shown in the post-transaction holdings column.

Were the Five9 (FIVN) sales made under a Rule 10b5-1 trading plan?

Yes. The explanation notes that the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2024, which pre-arranged the transactions.

What price ranges applied to the Five9 (FIVN) stock sales in this Form 4?

The filing notes weighted-average prices and indicates that some shares were sold in multiple transactions at prices ranging from $20.18 to $20.42 and from $20.42 to $20.73, with full breakdowns available on request.