Five9 officer plans sale of 17,767 company shares

Five9, Inc. (FIVN) officer Andrew Dignan has filed a Rule 144 notice indicating an intention to sell up to 17,767 shares of Five9 common stock through Morgan Stanley Smith Barney LLC.

Rhea-AI Filing Summary

Five9, Inc. (FIVN) officer Andrew Dignan has filed a Rule 144 notice indicating an intention to sell up to 17,767 shares of Five9 common stock through Morgan Stanley Smith Barney LLC. The shares were acquired upon the vesting of restricted stock units during the period from March 3, 2026 through June 3, 2026. In the prior three months, Dignan reported sales of Five9 common stock on June 3, 4, and 5, 2026, including Rule 10b5-1 plan sales, with disclosed aggregate sale proceeds on each date.

Key Figures

Shares to be sold under Rule 144: 17,767 shares Aggregate market value of securities to be sold: $614,205.19 Shares sold June 3, 2026: 2,558 shares +5 more

8 metrics

Shares to be sold under Rule 144 17,767 shares Common stock for account of Andrew Dignan

Aggregate market value of securities to be sold $614,205.19 Common stock listed in the Rule 144 notice

Shares sold June 3, 2026 2,558 shares Common stock sale by Andrew Dignan

Aggregate proceeds June 3, 2026 $63,463.98 Common stock sale by Andrew Dignan

Shares sold June 4, 2026 5,645 shares 10b5-1 sale of common stock

Aggregate proceeds June 4, 2026 $139,656.17 10b5-1 common stock sale

Shares sold June 5, 2026 3,073 shares 10b5-1 sale of common stock

Aggregate proceeds June 5, 2026 $74,520.25 10b5-1 common stock sale

Key Terms

Rule 144, restricted stock units, 10b5-1, Common, +1 more

5 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 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.

Common financial

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services"

securities to be sold financial

"The securities to be sold were acquired upon the vesting"

FAQ

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

What does the Rule 144 notice disclose for Five9, Inc. (FIVN)?

The notice discloses that Andrew Dignan, an officer of Five9, Inc., plans to sell up to 17,767 shares of Five9 common stock under Rule 144. The shares were acquired through the vesting of restricted stock units between March 3, 2026 and June 3, 2026.

How many Five9 (FIVN) shares are planned to be sold under this Rule 144 filing?

The filing states that up to 17,767 shares of Five9 common stock are to be sold. These shares are held for the account of Andrew Dignan and were acquired upon vesting of restricted stock units.

What prior sales by Andrew Dignan in Five9 (FIVN) stock are reported?

The document reports common stock sales in the past three months: 2,558 shares on June 3, 2026, 5,645 shares on June 4, 2026, and 3,073 shares on June 5, 2026, with each date showing aggregate sale proceeds in dollars.

Were any of the recent Five9 (FIVN) stock sales under a 10b5-1 plan?

Yes. The sales on June 4, 2026 and June 5, 2026 are identified as 10b5-1 Sales for Andrew Dignan, indicating they were executed under a pre-arranged Rule 10b5-1 trading plan.

Which broker is handling the planned Rule 144 sale for Five9 (FIVN) shares?

The notice identifies Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, as the broker-dealer through which the 17,767 Five9 common shares are to be sold under Rule 144.

How were the Five9 (FIVN) shares in this Rule 144 notice acquired?

According to the remarks, the securities to be sold were acquired upon the vesting of restricted stock units during the period from March 3, 2026 through June 3, 2026, and are now eligible for sale under Rule 144.

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

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Available on EDGAR 08/28/2026 - 04:27 PM EDT Accepted by SEC EDGAR 08/28/2026 - 04:26 PM EDT 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	17767	614205.19	74723531	08/28/2026	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			17767	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 ANDREW DIGNAN 3001 Bishop Drive, Suite 350 San Ramon CA 94583	Common	06/05/2026	3073	74520.25
10b5-1 Sales for ANDREW DIGNAN 3001 Bishop Drive, Suite 350 San Ramon CA 94583	Common	06/04/2026	5645	139656.17
ANDREW DIGNAN 3001 Bishop Drive, Suite 350 San Ramon CA 94583	Common	06/03/2026	2558	63463.98

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 3/3/2026 through 6/3/2026.
Date of Notice	08/28/2026
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)