[144] ON24 INC. SEC Filing

Rhea-AI Filing Summary

Onto Innovation (ONTF) insider Steven Vattuone has filed a Form 144 notice to sell common shares. The filing covers 325 common shares with an aggregate market value of 2577.71, to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services on the NYSE, with an approximate sale date of 02/10/2026.

The shares to be sold were acquired as performance shares from the issuer on 02/10/2026, with payment described as not applicable. The filing also lists prior sales over the past three months, including 80,000 common shares sold on 12/30/2025 for gross proceeds of 638744.00, along with several additional transactions in November and December 2025.

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	325	2577.71	42282395	02/10/2026	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	02/10/2026	Performance shares	Issuer			325	02/10/2026	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	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
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
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

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)