ONTF insider sells: Vattuone 22,884 shares for $183K

ONTF insider sells reported by Steven Vattuone.

Rhea-AI Filing Summary

ONTF insider sells reported by Steven Vattuone. The filing lists multiple 10b5-1 sales and restricted stock unit activity, including reported sales of 22,884 shares for $183,332.88 on 03/02/2026 and prior sales such as 80,000 shares for $638,746.00 on 12/30/2025. The transactions are presented as individual dispositions under Rule 144 and 10b5-1 plans.

Insights

Insider Transactions Specialist

Multiple Rule 144/10b5-1 sales by a named insider are disclosed, with specific shares and proceeds listed.

Steven Vattuone is reported as the seller in a series of dispositions, including 22,884 shares ($183,332.88) on 03/02/2026 and 80,000 shares ($638,746.00) on 12/30/2025. Several smaller trades dated 02/11/2026, 02/10/2026, and 12/09/2025 are also listed.

These entries show trade dates, share counts, and gross proceeds. Cash-flow treatment and any underlying plan terms are not detailed in the excerpt; subsequent filings may provide plan documents or settlement specifics.

Corporate Governance Advisor

Disclosure is routine but useful for tracking insider liquidity under 10b5-1 arrangements.

The record lists restricted stock unit activity dated 03/01/2026 and multiple sales identified as 10b5-1 transactions. Each sale is itemized with share counts and dollar amounts, supporting transparency on insider dispositions.

Timing and motivation are not stated in the excerpt; governance implications depend on broader context such as trading plan start dates or blackout periods disclosed elsewhere.

FAQ

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

What did ONTF insider Steven Vattuone report on Form 144?

He reported multiple proposed dispositions of Common stock under Rule 144 and 10b5-1. The filing lists specific trades including 22,884 shares for $183,332.88 on 03/02/2026 and 80,000 shares for $638,746.00 on 12/30/2025.

How many shares did Steven Vattuone sell on 03/02/2026 for ONTF?

He sold 22,884 shares on 03/02/2026 for $183,332.88. That sale is itemized in the filing as a 10b5-1 sale and is presented alongside other dispositions in late 2025 and early 2026.

Does the Form 144 excerpt show 10b5-1 sales for ONTF?

Yes, multiple entries are labeled 10b5-1 sales. The excerpt explicitly identifies several transactions as 10b5-1 sales, including entries dated 12/30/2025, 12/09/2025, and 03/02/2026.

Are restricted stock units mentioned in the ONTF filing?

Yes, Restricted Stock Units are listed with a date of 03/01/2026. The excerpt shows an RSU line associated with the issuer and the date but does not provide grant size or settlement mechanics in the provided text.

What proceeds were reported for the 12/30/2025 sale by Steven Vattuone?

The 12/30/2025 disposition lists 80,000 shares for $638,746.00. That sale is shown in the excerpt as a 10b5-1 sale and is itemized with share count and gross dollar amount.

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

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Accepted by SEC EDGAR 03/03/2026 - 04:29 PM EST 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	22013	176324.13	42282395	03/03/2026	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 Units	Issuer			22013	03/01/2026	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
STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	Common	03/02/2026	22884	183332.88
10b5-1 Sales for 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
10b5-1 Sales for STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	Common	12/30/2025	80000	638746.00
10b5-1 Sales for STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	Common	12/09/2025	7010	42327.08

144: Remarks and Signature

Remarks
Date of Notice	03/03/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/12/2024
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)