Five9's Panos Kozanian plans $281K stock sale

Panos Kozanian filed a Rule 144 notice to sell 8,246 Five9 shares, following a prior 5,521-share 10b5-1 sale in August 2026.

Rhea-AI Filing Summary

Five9, Inc. (FIVN) received a Rule 144 notice from Panos Kozanian covering a proposed sale of 8,246 shares of common stock, with an indicated aggregate market value of $281,188.60, through Morgan Stanley Smith Barney LLC Executive Financial Services on or after September 4, 2026 on NASDAQ.

The shares relate to Restricted Stock Units from the issuer dated September 3, 2026. Over the prior three months, Kozanian also reported a Rule 10b5-1 sale of 5,521 shares of Five9 common stock on August 11, 2026 for total proceeds of $184,464.89.

Key Figures

Planned shares to be sold: 8,246 shares Aggregate market value of planned sale: $281,188.60 Planned sale date: September 4, 2026 +2 more

5 metrics

Planned shares to be sold 8,246 shares Rule 144 notice for Five9 common stock by Panos Kozanian

Aggregate market value of planned sale $281,188.60 Indicated value for 8,246 shares in the Rule 144 filing

Planned sale date September 4, 2026 Proposed sale date for the Rule 144 transaction on NASDAQ

Shares sold in past 3 months 5,521 shares Rule 10b5-1 sale on August 11, 2026

Proceeds from August 11, 2026 sale $184,464.89 Sale of 5,521 shares of Five9 common stock

Key Terms

Rule 144, Restricted Stock Units, 10b5-1

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144"

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

"Common | 09/03/2026 | Restricted Stock Units | Issuer"

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.

10b5-1 regulatory

"10b5-1 Sales for PANOS KOZANIAN"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

FAQ

What does the Form 144 filing disclose for Five9, Inc. (FIVN)?

It discloses that Panos Kozanian plans a Rule 144 sale of 8,246 shares of Five9 common stock, with an aggregate market value of $281,188.60, through Morgan Stanley Smith Barney LLC Executive Financial Services on or after September 4, 2026 on NASDAQ.

How many Five9 (FIVN) shares is Panos Kozanian planning to sell under this Form 144?

The notice covers a proposed sale of 8,246 shares of Five9 common stock. The filing shows an indicated aggregate market value of $281,188.60 for this block, to be sold on or after September 4, 2026 on NASDAQ.

What prior sales by Panos Kozanian in Five9 (FIVN) stock are reported in the last three months?

The filing reports a Rule 10b5-1 sale of 5,521 shares of Five9 common stock by Panos Kozanian on August 11, 2026, with total sale proceeds of $184,464.89 during the past three months.

What type of Five9 (FIVN) securities are involved in this Form 144?

The securities are common stock of Five9, Inc. The Form 144 notes that they are related to Restricted Stock Units from the issuer dated September 3, 2026, with 8,246 shares covered by the planned Rule 144 sale.

Which broker is handling the planned Rule 144 sale for Panos Kozanian in Five9 (FIVN)?

The planned sale is listed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza. The filing ties this broker to the planned disposition of 8,246 shares of Five9 common stock on NASDAQ.

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

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Available on EDGAR 09/04/2026 - 04:38 PM Accepted by SEC EDGAR 09/04/2026 - 04:37 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	8246	281188.60	74723531	09/04/2026	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			8246	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	08/11/2026	5521	184464.89

144: Remarks and Signature

Remarks
Date of Notice	09/04/2026
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)