Steven Vattuone sells common shares

Steven Vattuone reported multiple sales of common stock in a Form 144 filing.

Rhea-AI Filing Summary

Steven Vattuone reported multiple sales of common stock in a Form 144 filing.

The filing lists sales including 80,000 shares on 12/30/2025 and smaller lots: 9,453 shares on 12/03/2025, 7,010 shares on 12/09/2025, 325 shares on 02/10/2026, and 422 shares on 02/11/2026. The filing also lists securities to be sold on 03/01/2026: 18,558 restricted stock and 4,326 performance shares.

Insights

Insider Transactions Analyst

Multiple insider dispositions reported; amounts and dates are explicit in the filing.

The filing shows specific sale transactions by Steven Vattuone, including a large block of 80,000 shares on 12/30/2025 and several smaller sales in December 2025 and February 2026. These entries are recorded as common stock sales with dollar amounts listed per line.

Timing and cash‑flow recipients are stated per transaction lines; planned disposals on 03/01/2026 list 18,558 restricted and 4,326 performance shares. Subsequent filings may show whether those planned disposals were executed.

FAQ

What shares did Steven Vattuone report selling in the ONTF Form 144?

He reported several sales, including 80,000 shares on 12/30/2025. The filing also lists sales of 9,453 shares on 12/03/2025, 7,010 on 12/09/2025, 325 on 02/10/2026, and 422 on 02/11/2026.

Does the Form 144 show any planned sales by Steven Vattuone for ONTF?

Yes — the filing lists planned sales dated 03/01/2026. It identifies 18,558 restricted stock and 4,326 performance shares with an issuer designation for the 03/01/2026 entries.

Are dollar values provided for the reported transactions in the Form 144?

Yes — the filing includes dollar amounts per sale line. Example lines show values such as $638,744.00 for 80,000 shares and smaller amounts tied to the other dated sales.

What is the filing type and its significance for ONTF insider activity?

This is a Form 144, used to report proposed or completed sales by affiliates or insiders. It documents specific sale dates, share counts, and listed securities to be sold, providing a public record of insider dispositions.

Who is the reporting person named in the Form 144 for ONTF?

The reporting person is Steven Vattuone, with an address shown in San Francisco. The filing attributes the listed common stock sales and the securities-to-be-sold entries to that reporting individual.

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

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Accepted by SEC EDGAR 03/02/2026 - 05:50 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	0001335061
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	ON24, INC.
SEC File Number	001-39965
Address of Issuer	301 Howard Street, Suite 1100 San Francisco CALIFORNIA 94105
Phone	(415) 369-8000
Name of Person for Whose Account the Securities are To Be Sold	STEVEN VATTUONE
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	22884	183332.88	42282395	03/02/2026	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	03/01/2026	Restricted stock	Issuer			18558	03/01/2026	Not Applicable
Common	03/01/2026	Performance Shares	Issuer			4326	03/01/2026	Not Applicable

* 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
STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	COMMON	02/11/2026	422	3342.24
STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	Common	02/10/2026	325	2577.71
STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	common	12/30/2025	80000	638744.00
STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	common	12/09/2025	7010	42327.08
STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	common	12/03/2025	9453	55105.32

144: Remarks and Signature

Remarks
Date of Notice	03/02/2026
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/ Steven Vattuone
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)