Five9 officer plans $144K stock sale

Officer Panos Kozanian has filed a Rule 144 notice to sell 4,332 Five9 common shares, with additional recent 10b5-1 plan sales disclosed.

Rhea-AI Filing Summary

Five9, Inc. (FIVN) received a notice under Rule 144 that officer Panos Kozanian plans to sell company stock. The notice covers a proposed sale of 4,332 shares of common stock through Morgan Stanley Smith Barney, with an indicated aggregate value of $144,125.64 on NASDAQ. These shares were acquired on September 3, 2026 via Restricted Stock Units granted by the issuer. The filing also reports prior Rule 10b5-1 plan sales by Kozanian in the last three months totaling 13,767 shares of common stock and aggregate sale proceeds of $459,180.38.

Key Figures

Proposed shares to be sold: 4,332 shares Aggregate value of proposed sale: $144,125.64 Shares sold on September 4, 2026: 8,246 shares +3 more

6 metrics

Proposed shares to be sold 4,332 shares Common stock under Rule 144 notice

Aggregate value of proposed sale $144,125.64 4,332 shares of common stock on NASDAQ

Shares sold on September 4, 2026 8,246 shares Rule 10b5-1 sale by Panos Kozanian

Proceeds from September 4, 2026 sale $274,715.49 Rule 10b5-1 sale of Five9 common stock

Shares sold on August 11, 2026 5,521 shares Rule 10b5-1 sale by Panos Kozanian

Proceeds from August 11, 2026 sale $184,464.89 Rule 10b5-1 sale of Five9 common stock

Key Terms

Rule 144, Restricted Stock Units, Rule 10b5-1 plan, aggregate market value

4 terms

Rule 144 regulatory

"filed a notice under Rule 144 that officer Panos Kozanian plans"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Units financial

"These shares were acquired on September 3, 2026 via Restricted Stock Units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Rule 10b5-1 plan regulatory

"reports prior Rule 10b5-1 plan sales by Kozanian in the last"

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

aggregate market value financial

"with an indicated aggregate market value of $144,125.64 on NASDAQ"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

What does Five9 (FIVN) disclose in this Form 144 filing?

The filing discloses that officer Panos Kozanian plans to sell 4,332 shares of Five9 common stock under Rule 144, and reports additional sales in the prior three months made under a Rule 10b5-1 plan.

How many Five9 (FIVN) shares are proposed for sale in this notice?

The notice covers a proposed sale of 4,332 shares of Five9 common stock. The indicated aggregate market value for these shares is $144,125.64, with trading on NASDAQ through Morgan Stanley Smith Barney.

How were the Five9 (FIVN) shares in this Form 144 acquired?

The 4,332 shares of Five9 common stock covered by the notice were acquired on September 3, 2026 through Restricted Stock Units granted by the issuer, Five9, Inc.

What recent 10b5-1 plan sales by Panos Kozanian of Five9 (FIVN) stock are reported?

The filing reports 10b5-1 plan sales of 8,246 shares on September 4, 2026 for $274,715.49 and 5,521 shares on August 11, 2026 for $184,464.89, all in Five9 common stock.

What is the total amount of Five9 (FIVN) stock sold or planned for sale in this period?

The filing shows 4,332 shares proposed for sale plus prior 10b5-1 plan sales of 13,767 shares, for a combined 18,099 shares of Five9 common stock reported over the period covered.

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

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Available on EDGAR 09/08/2026 - 04:30 PM Accepted by SEC EDGAR 09/08/2026 - 04:30 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001940974
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Five9, Inc.
SEC File Number	001-36383
Address of Issuer	3001 Bishop Drive, Suite 350 San Ramon CALIFORNIA 94583
Phone	9252012000
Name of Person for Whose Account the Securities are To Be Sold	PANOS KOZANIAN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	4332	144125.64	74723531	09/08/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/03/2026	Restricted Stock Units	Issuer			4332	09/03/2026	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for PANOS KOZANIAN 3001 Bishop Drive, Suite 350 San Ramon CA 94583	Common	09/04/2026	8246	274715.49
10b5-1 Sales for PANOS KOZANIAN 3001 Bishop Drive, Suite 350 San Ramon CA 94583	Common	08/11/2026	5521	184464.89

144: Remarks and Signature

Remarks
Date of Notice	09/08/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/06/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Panos Nareg Kozanian
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)