Insider sale: 9,855 shares reported by Bryan Lee

Bryan Lee reported insider sales of common stock under a 10b5-1 plan.

Rhea-AI Filing Summary

Bryan Lee reported insider sales of common stock under a 10b5-1 plan. The filing shows 9,855 shares sold on 03/04/2026 for an aggregate of $174,389.15. The filing also lists 1,756 Restricted Stock Units to be sold with an action date of 03/03/2026. Shares outstanding were 76,495,680 as of 03/05/2026.

Insights

Corporate Governance / Insider Transactions

Routine 10b5-1 insider sale disclosed; amounts and dates specified.

The excerpt lists a 10b5-1 sale of 9,855 common shares on 03/04/2026 for $174,389.15, attributed to Bryan Lee. It also lists 1,756 RSUs with an issuer sale date of 03/03/2026.

Cash‑flow treatment and plan terms are not stated in the excerpt; subsequent filings or the broker statement would provide settlement and withholding details. Observers may note the timing and quantities in the company’s next periodic filings.

FAQ

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

What did the Form 144 for FIVN disclose about Bryan Lee's transactions?

Answer: The Form 144 reports a 10b5-1 sale of 9,855 common shares on 03/04/2026 for $174,389.15. It also lists 1,756 Restricted Stock Units with an issuer action date of 03/03/2026.

How many shares outstanding were reported for FIVN in the filing?

Answer: The filing shows 76,495,680 shares outstanding as of 03/05/2026. This number is presented in the securities information section and serves as a baseline ownership figure in the excerpt.

Was Bryan Lee's sale part of a trading plan in the Form 144?

Answer: Yes. The filing attributes the trades to a 10b5-1 sales plan for Bryan Lee, which is explicitly mentioned alongside the sale of 9,855 shares on 03/04/2026 for $174,389.15.

Does the Form 144 specify how proceeds will be used or who receives them?

Answer: The excerpt does not state proceeds recipients or uses. It lists transaction quantities, dates, and aggregate amount $174,389.15, but not the allocation or settlement instructions for those proceeds.

Are Restricted Stock Units (RSUs) included in this Form 144 filing for FIVN?

Answer: The filing lists 1,756 Restricted Stock Units with an issuer action date of 03/03/2026. The RSUs are noted in the "Securities To Be Sold" section of the excerpt.

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

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Accepted by SEC EDGAR 03/05/2026 - 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	0002063775
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	BRYAN LEE
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	1756	31414.84	76495680	03/05/2026	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	03/03/2026	Restricted Stock Units	Issuer			1756	03/03/2026	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 BRYAN LEE 3001 Bishop Drive, Suite 350 San Ramon CA 94583	Common	03/04/2026	9855	174389.15

144: Remarks and Signature

Remarks
Date of Notice	03/05/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/03/2025
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/ Bryan Lee
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)