[144] FIVE9, INC. SEC Filing

Rhea-AI Filing Summary

Five9, Inc. (FIVN) filed a Form 144 reporting a proposed sale of 1,964 shares of common stock through Morgan Stanley Smith Barney LLC with an aggregate market value of $51,731.76. The filing lists approximately 77,262,690 shares outstanding and an approximate sale date of 09/04/2025 on Nasdaq. The shares were acquired as RSUs from the issuer on 09/03/2025 and payment/completion is recorded as 09/03/2025. The filer reports no sales in the past three months and includes the standard attestation that the seller is not aware of undisclosed material adverse information.

Positive

• No sales in the prior three months are reported, simplifying aggregation rules.
• Securities were acquired as RSUs, showing the sale relates to compensation vesting rather than a third-party transfer.
• Broker identified (Morgan Stanley Smith Barney LLC), providing execution transparency.

Negative

• Proposed sale by an insider could be perceived negatively by some investors despite small size.
• Near-immediate sale of RSUs (acquired 09/03/2025, sale approx. 09/04/2025) may raise questions about timing or liquidity needs.

Insights

Securities Analyst

TL;DR: Small-block insider sale of recently vested RSUs; likely routine but monitor for follow-up filings.

The filing shows a proposed disposition of 1,964 shares valued at $51,731.76, executed through a major broker. The shares were acquired as restricted stock units the day before the reported sale window, indicating a near-immediate sale of vested compensation rather than a scheduled large divestiture. Given the size relative to ~77.3 million shares outstanding, the direct market impact is likely minimal. Absence of sales in the prior three months reduces complexity around aggregation of recent dispositions.

Corporate Governance Expert

TL;DR: Filing meets disclosure obligations; includes standard attestation and broker details.

The Form 144 contains the required broker identification, transaction timing, and acquisition details showing an RSU vesting event followed by a proposed sale. The attestation about lack of material nonpublic information is present, aligning with compliance expectations. Investors should expect any subsequent Form 4 or amendment if additional context or sales occur, but none are reported here for the past 3 months.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	1964	51731.76	77262690	09/04/2025	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	09/03/2025	RSU	Issuer			1964	09/03/2025	Not Applicable

* 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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What did Five9 (FIVN) report on Form 144?

The filer reported a proposed sale of 1,964 common shares valued at $51,731.76 with an approximate sale date of 09/04/2025.

Who is the broker handling the proposed sale for FIVN?

The broker listed is Morgan Stanley Smith Barney LLC, address: Executive Financial Services, 1 New York Plaza, 8th Floor, New York, NY 10004.

How were the shares acquired that are being sold?

The shares were acquired as RSUs from the issuer on 09/03/2025, with payment/completion noted on the same date.

Were there any sales of Five9 stock by this person in the past three months?

The filing states "Nothing to Report" for securities sold during the past three months.

What does the attestation in the Form 144 state?

The signer represents they do not know any material adverse information about the issuer that has not been publicly disclosed and references Rule 10b5-1 plan language if applicable.