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  4. [144] Five9, Inc. SEC Filing

Five9 officer may sell 3,932 shares for taxes

Five9, Inc. officer Bryan Lee filed a Form 144 for an issuer-mandated RSU tax-withholding sale of 3,932 shares plus previously reported June sales.

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
144

Rhea-AI Filing Summary

Five9, Inc. officer Bryan Lee has filed a Form 144 indicating the potential sale of 3,932 shares of Five9 common stock through Morgan Stanley Smith Barney on Nasdaq, with a proposed sale date of September 4, 2026. The shares relate to RSU vesting, and the filing notes the sale is issuer-mandated to cover tax withholding obligations rather than a discretionary trade. Over the prior three months, Bryan Lee reported sales of 16,620 shares on June 4, 2026 for $412,417.62 and 1,511 shares on June 5, 2026 for $36,641.75.

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Shares proposed to be sold 3,932 shares Five9 common stock under Form 144, proposed sale date September 4, 2026
Proceeds from June 4, 2026 sale $412,417.62 Sale of 16,620 shares of Five9 common stock on June 4, 2026
Shares sold June 4, 2026 16,620 shares Common stock of Five9 sold by Bryan Lee
Proceeds from June 5, 2026 sale $36,641.75 Sale of 1,511 shares of Five9 common stock on June 5, 2026
Shares sold June 5, 2026 1,511 shares Common stock of Five9 sold by Bryan Lee
Date of Notice September 3, 2026 Form 144 notice date for proposed sale of 3,932 shares
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
"vesting and settlement of Restricted Stock Units, and it does not"
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.
issuer-mandated sale financial
"represents an Issuer mandated sale by the Reporting Person to cover"
Nasdaq market
"09/04/2026 | Nasdaq"
The Nasdaq is a stock exchange where many companies' shares are bought and sold, functioning much like a marketplace for investments. It matters to investors because it provides a platform to buy and sell ownership stakes in companies, helping them track the value of those companies and make informed decisions. As one of the largest and most technology-focused markets, it also reflects trends and developments in the business world.

FAQ

What does the Form 144 filing for FIVN disclose about Bryan Lee's planned sale?
The Form 144 reports that Five9, Inc. officer Bryan Lee may sell up to 3,932 shares of Five9 common stock, related to RSU vesting, with a proposed sale date of September 4, 2026 on Nasdaq through Morgan Stanley Smith Barney.

Is Bryan Lee's planned sale of FIVN shares a discretionary trade?
No. The filing states the sale is an issuer-mandated sale by Bryan Lee to cover tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units and does not represent a discretionary trade by him.

How many FIVN shares has Bryan Lee sold in the past three months?
The filing lists sales of 16,620 shares of Five9 common stock on June 4, 2026 and 1,511 shares on June 5, 2026, for proceeds of $412,417.62 and $36,641.75, respectively.

Through which broker will Bryan Lee's FIVN shares potentially be sold?
The Form 144 indicates the 3,932 shares of Five9 common stock are to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, with trading on Nasdaq.

What type of security is involved in Bryan Lee's Form 144 for FIVN?
The securities involved are common stock of Five9, Inc., associated with the vesting and settlement of Restricted Stock Units (RSUs). The Form 144 covers a potential sale of 3,932 shares for tax withholding purposes.

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

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144: Filer Information

144: Issuer Information

144: Securities Information



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


* 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

144: Remarks and Signature

Source: View Original Filing on SEC EDGAR