ON24 (NYSE: ONTF) Form 144 details 7,010-share planned stock sale

Rhea-AI Filing Summary

ON24 (ONTF) filed a Form 144 notice for a planned insider stock sale. The filing covers a proposed sale of 7,010 shares of ON24 common stock on the NYSE through Morgan Stanley Smith Barney LLC, with an aggregate market value of $42,480.60 at the time of the notice.

The shares to be sold were acquired as restricted stock units on December 1, 2025. The filing also lists recent insider selling activity by Steven Vattuone over the past three months under both 10b5-1 trading plans and discretionary trades, including 26,264 common shares sold on December 1, 2025 for gross proceeds of $149,161.14 and 9,453 shares sold on December 3, 2025 for $55,105.32.

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
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	7010	42480.60	42282395	12/09/2025	NYSE

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	12/01/2025	Restricted Stock Units	Issuer			7010	12/01/2025	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 STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	Common	12/03/2025	9453	55105.32
STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	Common	12/01/2025	26264	149161.14
10b5-1 Sales for STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	Common	11/24/2025	3821	20191.31
STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	Common	11/20/2025	4392	23267.94

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What insider stock sale did ON24 (ONTF) disclose in this Form 144?

The notice covers a planned sale of 7,010 shares of ON24 common stock on the NYSE, with an aggregate market value of $42,480.60 at the time of the filing.

How were the ON24 (ONTF) shares being sold under Form 144 acquired?

The 7,010 ON24 common shares covered by the notice were acquired on December 1, 2025 as restricted stock units from the issuer.

Which broker is handling the planned ON24 (ONTF) Form 144 sale?

The proposed sale of 7,010 ON24 common shares will be executed through Morgan Stanley Smith Barney LLC Executive Financial Services in New York.

Who is the seller named in the recent ON24 (ONTF) insider transactions?

The recent sales disclosed in the three-month history section are for the account of Steven Vattuone, including both Rule 10b5-1 plan trades and other sales.

What recent ON24 (ONTF) sales by Steven Vattuone are listed in the past 3 months?

Recent transactions include 9,453 common shares sold on December 3, 2025 for $55,105.32, 26,264 shares sold on December 1, 2025 for $149,161.14, 3,821 shares sold on November 24, 2025 for $20,191.31, and 4,392 shares sold on November 20, 2025 for $23,267.94.

What representation does the seller make in the ON24 (ONTF) Form 144?

By signing, the seller represents that they do not know any material adverse information about the issuer's current or prospective operations that has not been publicly disclosed, and similar representations apply if relying on a Rule 10b5-1 trading plan.