Five9 legal chief sells 29,817 shares

Five9, Inc.’s Chief Administrative and Legal Officer, Tiffany N. Meriweather, reported selling a total of 29,817 shares of Five9 common stock in open-market transactions.

Rhea-AI Filing Summary

Five9, Inc.’s Chief Administrative and Legal Officer, Tiffany N. Meriweather, reported selling a total of 29,817 shares of Five9 common stock in open-market transactions. She sold 8,497 shares on May 13, 2026 at a weighted average price of $21.22 per share and 21,320 shares on May 14, 2026 at a weighted average price of $20.98 per share. After these sales, she directly holds 281,298 Five9 common shares, indicating she continues to maintain a substantial equity stake in the company.

Insider Trade Summary

Net Seller: 29,817 shares

Net Sell 2 txns

Insider Meriweather Tiffany N.

Role Chief Admin. & Legal Officer

Sold 29,817 shs ($628K)

Type	Security	Shares	Price	Value
Sale	Common Stock	21,320	$20.98	$447K
Sale	Common Stock	8,497	$21.22	$180K

Holdings After Transaction: Common Stock — 281,298 shares (Direct)

Footnotes (2)

1. F1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.20 to $21.22, 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.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.97 to $21.10, 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.

Key Figures

Shares sold May 13, 2026: 8,497 shares Price May 13, 2026: $21.22/share Shares sold May 14, 2026: 21,320 shares +3 more

6 metrics

Shares sold May 13, 2026 8,497 shares Open-market sale of common stock at weighted average $21.22

Price May 13, 2026 $21.22/share Weighted average sale price for 8,497 common shares

Shares sold May 14, 2026 21,320 shares Open-market sale of common stock at weighted average $20.98

Price May 14, 2026 $20.98/share Weighted average sale price for 21,320 common shares

Total shares sold 29,817 shares Aggregate of two open-market sales reported in Form 4

Shares held after transactions 281,298 shares Direct ownership of Five9 common stock after May 14, 2026 sale

Key Terms

open-market sale, weighted average price, Common Stock, non-derivative

4 terms

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

non-derivative financial

"transaction_type: non-derivative"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

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

Five9 disclosed that Chief Administrative and Legal Officer Tiffany N. Meriweather sold company common stock in two open-market transactions, totaling 29,817 shares. The sales occurred on May 13 and May 14, 2026, at weighted average prices slightly above $21 per share.

How many Five9 (FIVN) shares did Tiffany N. Meriweather sell and at what prices?

She sold 8,497 Five9 common shares on May 13, 2026 at a weighted average price of $21.22, and 21,320 shares on May 14, 2026 at a weighted average price of $20.98. In total, 29,817 shares were sold in open-market transactions.

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

After the reported open-market sales, Tiffany N. Meriweather directly holds 281,298 shares of Five9 common stock. This post-transaction figure reflects her remaining equity stake following the total sale of 29,817 shares across May 13 and May 14, 2026.

What type of insider transactions were reported for Five9 (FIVN) on these dates?

The filing reports open-market sales of Five9 common stock, coded as “S” transactions. Both trades involved non-derivative common shares sold directly by the insider, rather than option exercises, gifts, or tax-withholding dispositions, according to the transaction details provided.

Were the reported Five9 (FIVN) insider sales executed at a single price or a range of prices?

Each transaction was executed at multiple prices within a narrow range, reported as a weighted average. On May 13, trades ranged from $21.20 to $21.22 per share, and on May 14, from $20.97 to $21.10, with full breakdowns available on request.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/15/2026 - 05:29 PM Learn about SEC filing dates

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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 CALIFORNIA 94583

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

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

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

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

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	05/13/2026		S		8,497	D	$21.22(1)	302,618	D
Common Stock	05/14/2026		S		21,320	D	$20.98(2)	281,298	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 price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.20 to $21.22, 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.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.97 to $21.10, 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/ Bryan Lee, Attorney in Fact	05/15/2026
	** 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.
* Form 4: SEC 1474 (03-26)