ONTF holder plans sale of 422 common shares

ONTF security holder Steven Vattuone filed a notice of proposed sale under Rule 144, covering 422 shares of common stock with an aggregate market value of $3,346.46.

Rhea-AI Filing Summary

ONTF security holder Steven Vattuone filed a notice of proposed sale under Rule 144, covering 422 shares of common stock with an aggregate market value of $3,346.46. The shares are to be sold through Morgan Stanley Smith Barney LLC on the NYSE on or about February 11, 2026.

The 422 shares were acquired on February 6, 2026 as Performance Stock Units from the issuer. The filing also lists several sales of the issuer’s common stock during the prior three months, including 80,000 shares sold on December 30, 2025 for $638,746.00 in a transaction noted as a Rule 10b5-1 sale.

FAQ

What does the ONTF Form 144 filing by Steven Vattuone disclose?

The filing discloses that Steven Vattuone intends to sell 422 ONTF common shares under Rule 144. These shares were recently acquired as Performance Stock Units, and the filing also summarizes his other ONTF stock sales during the prior three months.

How many ONTF shares does Steven Vattuone plan to sell in this Form 144?

He plans to sell 422 ONTF common shares. The filing lists an aggregate market value of $3,346.46 for this block, with the sale routed through a broker and executed on a national securities exchange.

How and where will the 422 ONTF shares be sold under this Form 144?

The 422 ONTF common shares are to be sold through Morgan Stanley Smith Barney LLC, at its New York office. The filing identifies the NYSE as the securities exchange and indicates an approximate sale date of February 11, 2026.

How did Steven Vattuone acquire the 422 ONTF shares covered by this Form 144?

The 422 ONTF common shares were acquired on February 6, 2026 via Performance Stock Units from the issuer. The filing shows the acquisition date and that the amount of securities acquired matches the amount proposed to be sold.

What prior ONTF stock sales by Steven Vattuone are disclosed in the last three months?

The filing lists multiple ONTF common stock sales, including 80,000 shares sold on December 30, 2025 for $638,746.00. Several of the listed transactions are labeled as Rule 10b5-1 sales, alongside smaller discretionary sales.

What is the largest single ONTF sale amount reported in the three-month history?

The largest single sale reported is 80,000 ONTF common shares on December 30, 2025, with gross proceeds of $638,746.00. This transaction is specifically described as a 10b5-1 sale for Steven Vattuone at his listed San Francisco address.

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Accepted by SEC EDGAR 02/11/2026 - 04:30 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	422	3346.46	42282395	02/11/2026	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	02/06/2026	Performance Stock Units	Issuer			422	02/06/2026	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	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
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	12/02/2025	12754	72220.80
STEVEN VATTUONE 301 Howard Street, Suite 1100 San Francisco CA 94105	Common	12/01/2025	13510	76940.80
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	02/11/2026
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)