Five9 insider files to sell 5,324 RSUs

Five9, Inc. notice of proposed sale of common stock by an insider.

Rhea-AI Filing Summary

Five9, Inc. notice of proposed sale of common stock by an insider.

The filing lists 5,324 RSUs to be sold with an effective date of 03/03/2026 and records a prior sale of 5,255 common shares on 12/04/2025 with an aggregate figure of 106,939.25.

Insights

Securities Counsel

Routine Rule 144 notice showing an insider resale of RSUs and a recent prior sale.

The filing identifies 5,324 RSUs with an effective date of 03/03/2026. It also records a prior disposal of 5,255 shares on 12/04/2025 with an aggregate value of 106,939.25. The entry lists the issuer as the counterparty for the RSUs.

Timing and method details for the proposed sale are not provided in the excerpt; cash‑flow treatment and plan limits are not stated. Subsequent filings or broker records would disclose settlement mechanics and whether sales comply with volume or holding‑period limits.

FAQ

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

What does the FIVN Form 144 disclose about the current sale?

It discloses a proposed sale of 5,324 RSUs with an effective date of 03/03/2026. The filing lists the securities as RSUs issued by the company and names the reporting individual, but sale mechanics are not detailed in the excerpt.

Who is listed as the seller in the FIVN filing?

The filing names Matthew Tuckness at the provided address as the reporting party. The entry associates the proposed sale with RSUs and identifies the issuer as the counterparty on 03/03/2026.

Does the filing show recent prior sales by the same person for FIVN?

Yes, it records a prior sale of 5,255 common shares on 12/04/2025 with an aggregate figure of 106,939.25. That prior transaction is listed under securities sold during the past three months.

Does the Form 144 state who receives the proceeds for the FIVN RSU sale?

The provided excerpt does not specify who receives the proceeds. It records the RSUs as 'Issuer' in the counterparty column but does not state the cash‑flow recipient or intended use of proceeds.

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

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Accepted by SEC EDGAR 03/03/2026 - 04:48 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	0002080340
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 Dr. Ste 350 San Ramon CALIFORNIA 94583
Phone	9252012000
Name of Person for Whose Account the Securities are To Be Sold	Matthew Tuckness
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	5324	93010.28	76550422	03/04/2026	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	03/03/2026	RSU	Issuer			5324	03/03/2026	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Matthew Tuckness 3001 Bishop Dr. Suite 350 San Ramon CA 94583	Common	12/04/2025	5255	106939.25

144: Remarks and Signature

Remarks	The sale reported on this Form 144 represents an Issuer mandated sale by the Reporting Person to cover tax withholding obligations in connection with the vesting and settlement of Restricted Stock Units, and it does not represent a discretionary trade by the Reporting Person.
Date of Notice	03/03/2026
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	Matthew Tuckness
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)