Five9 officer plans Rule 144 sale of 2,706 shares

Five9 officer Leena K. Mansharamani filed a Rule 144 notice for 2,706 shares after selling 2,658 shares in the prior three months under a Rule 10b5-1 plan.

Rhea-AI Filing Summary

Five9, Inc. (FIVN) received a Rule 144 notice from officer Leena K. Mansharamani covering a proposed sale of 2,706 shares of common stock, with an indicated aggregate market value of $92,274.60 as of September 4, 2026. The shares relate to Restricted Stock Units and are to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services.

The notice also reports that during the prior three months, sales under a Rule 10b5-1 trading plan for Leena K. Mansharamani totaled 2,658 shares of Five9 common stock, with aggregate proceeds of $90,955.43. The filer signed the notice on September 4, 2026.

Key Figures

Proposed shares to be sold: 2,706 shares Aggregate market value of proposed sale: $92,274.60 Shares sold in past three months: 2,658 shares +2 more

5 metrics

Proposed shares to be sold 2,706 shares Common stock covered by the Rule 144 notice for Leena K. Mansharamani

Aggregate market value of proposed sale $92,274.60 Value associated with 2,706 shares of Five9 common stock as of September 4, 2026

Shares sold in past three months 2,658 shares Rule 10b5-1 sales for Leena K. Mansharamani reported on September 3, 2026

Aggregate proceeds from past three months’ sales $90,955.43 Total value of 2,658 Five9 common shares sold under a Rule 10b5-1 plan

Proposed sale date September 4, 2026 Date associated with the 2,706-share Rule 144 sale

Key Terms

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

"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.

Rule 10b5-1 regulatory

"10b5-1 Sales for LEENA K MANSHARAMANI"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Form 144 regulatory

"144: Securities To Be Sold"

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 latest Form 144 filing disclose for Five9, Inc. (FIVN)?

It discloses that officer Leena K. Mansharamani filed a Rule 144 notice to potentially sell 2,706 shares of Five9 common stock, with an indicated aggregate market value of $92,274.60 as of September 4, 2026, through Morgan Stanley Smith Barney LLC.

How many Five9 (FIVN) shares has Leena K. Mansharamani sold in the last three months?

The notice reports that over the past three months, sales under a Rule 10b5-1 plan for Leena K. Mansharamani totaled 2,658 shares of Five9 common stock, generating aggregate proceeds of $90,955.43 on September 3, 2026.

What type of securities are covered by this Form 144 for Five9 (FIVN)?

The Form 144 covers common stock of Five9, Inc., related to Restricted Stock Units to be sold for the account of officer Leena K. Mansharamani, with the prospective sale routed through Morgan Stanley Smith Barney LLC Executive Financial Services.

When was the Rule 144 notice for Five9 (FIVN) signed and dated?

The notice lists a proposed sale date of September 4, 2026 and bears the signature “/s/ Leena K Mansharamani” dated September 4, 2026, indicating when the officer executed the Form 144 filing.

Is the Five9 (FIVN) Form 144 sale under a Rule 10b5-1 trading plan?

The filing specifically labels the past three months’ activity as “10b5-1 Sales for LEENA K MANSHARAMANI”, covering 2,658 shares sold on September 3, 2026. The prospective 2,706-share sale is disclosed under Rule 144, with RSUs as the source.

On which market are the Five9 (FIVN) shares in this Form 144 traded?

The securities referenced in the notice are Five9 common stock listed on the NASDAQ, with brokerage handling by Morgan Stanley Smith Barney LLC Executive Financial Services in New York.

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

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Available on EDGAR 09/04/2026 - 04:37 PM Accepted by SEC EDGAR 09/04/2026 - 04:37 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	0001846877
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. COM
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	LEENA K MANSHARAMANI
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	2706	92274.60	74723531	09/04/2026	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	09/03/2026	Restricted Stock Units	Issuer			2706	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 LEENA K MANSHARAMANI 3001 Bishop Drive, Suite 350 San Ramon CA 94583	COMMON	09/03/2026	2658	90955.43

144: Remarks and Signature

Remarks
Date of Notice	09/04/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/04/2026
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	/s/ Leena K Mansharamani
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)