Five9 stockholder plans $91K Rule 144 share sale

Stockholder Andrew Dignan files a Rule 144 notice to resell 2,746 Five9 common shares acquired from vested restricted stock units.

Rhea-AI Filing Summary

Five9, Inc. (FIVN) is the issuer for a planned resale of its common stock by stockholder Andrew Dignan under Rule 144. The notice covers a proposed sale of 2,746 shares of common stock, with a reference market value of $91,359.42 as of September 8, 2026.

The shares to be sold were acquired upon the vesting of restricted stock units during the period from March 4, 2024 through September 3, 2026. The notice also lists earlier Rule 10b5-1 and other sales of Five9 common stock by the same person during the prior three months.

Key Figures

Proposed shares to be sold: 2,746 shares Reference market value: $91,359.42 Shares sold September 4, 2026: 7,279 shares +5 more

8 metrics

Proposed shares to be sold 2,746 shares Five9 common stock covered by the Rule 144 notice

Reference market value $91,359.42 Market value tied to the 2,746 Five9 shares as of September 8, 2026

Shares sold September 4, 2026 7,279 shares Five9 common stock sold for $242,472.95 in a past three-month transaction

Proceeds September 4, 2026 sale $242,472.95 Gross proceeds for 7,279 shares of Five9 common stock

Shares sold September 3, 2026 3,295 shares Five9 common stock sold for $110,217.75 in a past three-month transaction

Proceeds September 3, 2026 sale $110,217.75 Gross proceeds for 3,295 shares of Five9 common stock

Shares sold August 28, 2026 17,767 shares Five9 common stock sold under a 10b5-1 plan for $622,393.54

Proceeds August 28, 2026 sale $622,393.54 Gross proceeds for 17,767 shares of Five9 common stock

Key Terms

Rule 144, restricted stock units, 10b5-1 Sales, Form 144

4 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

"The securities to be sold were acquired upon the vesting of restricted stock units"

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 Sales regulatory

"10b5-1 Sales for ANDREW DIGNAN 3001 Bishop Drive, Suite 350"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

FAQ

What does the Form 144 filing for FIVN disclose about planned share sales?

It discloses that Andrew Dignan intends to resell 2,746 shares of Five9, Inc. common stock under Rule 144, with a referenced market value of $91,359.42 as of September 8, 2026. The shares come from vested restricted stock units.

How many Five9 (FIVN) shares has Andrew Dignan sold in the past three months?

The notice lists sales of 7,279 shares on September 4, 2026 for $242,472.95, 3,295 shares on September 3, 2026 for $110,217.75, and 17,767 shares on August 28, 2026 for $622,393.54.

What is the source of the Five9 (FIVN) shares being sold under this Form 144?

The shares were acquired upon the vesting of restricted stock units during the period from March 4, 2024 through September 3, 2026, as stated in the remarks section signed by Andrew Dignan.

Is the planned Five9 (FIVN) share sale under a Rule 10b5-1 trading plan?

The planned 2,746-share sale is disclosed under Rule 144. The filing specifically labels certain prior sales during the past three months as “10b5-1 Sales”, but does not label the new proposed 2,746-share sale that way.

Who is the broker named for the planned Five9 (FIVN) Rule 144 sale?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, in connection with the 2,746 Five9 common shares referenced in the notice.

What role does Rule 144 play in this Five9 (FIVN) filing?

Rule 144 provides a safe harbor for the public resale of restricted or control securities. This notice supplies required information about the issuer, the security holder, and the amount of Five9 common stock that may be sold under that rule.

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

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Available on EDGAR 09/08/2026 - 04:27 PM Accepted by SEC EDGAR 09/08/2026 - 04:25 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	0002000932
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	ANDREW DIGNAN
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	2746	91359.42	74723531	09/08/2026	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	03/04/2024	Restricted Stock Units	Issuer			2746	03/04/2024	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 ANDREW DIGNAN 3001 Bishop Drive, Suite 350 San Ramon CA 94583	Common	09/04/2026	7279	242472.95
ANDREW DIGNAN 3001 Bishop Drive, Suite 350 San Ramon CA 94583	Common	09/03/2026	3295	110217.75
10b5-1 Sales for ANDREW DIGNAN 3001 Bishop Drive, Suite 350 San Ramon CA 94583	Common	08/28/2026	17767	622393.54

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 3/4/2024 through 09/03/2026.
Date of Notice	09/08/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/02/2025
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/ Andrew Dignan
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)