Five9 insider plans 6,986-share stock sale

Five9 executive Andrew Dignan filed a Rule 144 notice to sell 6,986 shares and disclosed additional recent 10b5-1 stock sales.

Available on EDGAR 09/17/2026 - 04:31 PM EDT Accepted by SEC EDGAR 09/17/2026 - 04:31 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Five9, Inc. (FIVN) insider Andrew Dignan filed a Rule 144 notice covering a planned sale of 6,986 shares of common stock held via restricted stock units, through Morgan Stanley Smith Barney LLC. The filing also lists recent 10b5-1 plan sales of Five9 common stock by Dignan in August and September 2026.

Key Figures

Shares to be sold under Rule 144: 6,986 shares Reported value for planned sale: $238,082.88 10b5-1 sale on August 28, 2026: 17,767 shares; $622,393.54 +3 more

6 metrics

Shares to be sold under Rule 144 6,986 shares Planned sale of Five9 common stock related to restricted stock units

Reported value for planned sale $238,082.88 Value reported alongside the 6,986 Five9 shares in the securities information section

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

10b5-1 sale on September 4, 2026 7,279 shares; $242,472.95 Five9 common stock sold under a 10b5-1 plan

Non-10b5-1 sale on September 3, 2026 3,295 shares; $110,217.75 Five9 common stock sale listed separately from 10b5-1 transactions

10b5-1 sale on September 8, 2026 2,746 shares; $86,690.06 Five9 common stock sold under a 10b5-1 plan

Key Terms

Rule 144, Restricted Stock Units, 10b5-1, Issuer

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

"Common | 09/03/2026 | Restricted Stock Units | Issuer"

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 regulatory

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

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Issuer regulatory

"Restricted Stock Units | Issuer | | | 6986 | 09/03/2026"

FAQ

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

What does the Form 144 filing disclose for Five9, Inc. (FIVN)?

It discloses that Andrew Dignan filed a Rule 144 notice for the potential sale of 6,986 shares of Five9 common stock related to restricted stock units, and lists several recent 10b5-1 plan sales of Five9 stock in August and September 2026.

How many Five9 (FIVN) shares are covered by Andrew Dignan’s new Rule 144 notice?

The notice covers a potential sale of 6,986 shares of Five9 common stock. These shares are tied to restricted stock units, with the acquisition date shown as September 3, 2026, and are to be sold through Morgan Stanley Smith Barney LLC.

What recent 10b5-1 sales of Five9 (FIVN) shares did Andrew Dignan report?

Reported 10b5-1 sales include 17,767 shares on August 28, 2026 for $622,393.54, 7,279 shares on September 4, 2026 for $242,472.95, and 2,746 shares on September 8, 2026 for $86,690.06, plus an additional non-10b5-1 sale on September 3, 2026.

What non-10b5-1 sale did Andrew Dignan report for Five9 (FIVN)?

He reported a sale of 3,295 shares of Five9 common stock on September 3, 2026 for $110,217.75. This line is listed separately from the 10b5-1 plan sales in the three-month transaction history section.

Which broker is involved in Andrew Dignan’s planned Five9 (FIVN) share sale?

The planned sale of 6,986 shares of Five9 common stock is listed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004.

What dollar amounts are associated with Andrew Dignan’s recent Five9 (FIVN) stock sales?

Reported proceeds include $622,393.54 on August 28, 2026, $242,472.95 on September 4, 2026, $110,217.75 on September 3, 2026, and $86,690.06 on September 8, 2026, each tied to specific share sales of Five9 common stock.

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

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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	6986	238082.88	74723531	09/17/2026	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	09/03/2026	Restricted Stock Units	Issuer			6986	09/03/2026	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 ANDREW DIGNAN 3001 Bishop Drive, Suite 350 San Ramon CA 94583	Common	09/08/2026	2746	86690.06
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
Date of Notice	09/17/2026
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)