[144] ON24, Inc. SEC Filing

Rhea-AI Filing Summary

ON24, Inc. (ONTF) Form 144 notice for proposed sale of common stock. The notice reports an intended sale of 20,116 shares through Morgan Stanley Smith Barney on the NYSE with an aggregate market value of $112,850.76 and an approximate sale date of 09/09/2025. The shares were acquired as Restricted Stock Units on 09/01/2025 and payment is recorded as N/A. The filer, identified in prior transactions as Steven Vattuone, sold multiple blocks totaling 21,376 shares in August and September 2025 generating gross proceeds shown per trade.

Insights

Securities Compliance Analyst

TL;DR: Insider filing indicates planned sale of company shares under Rule 144; includes prior 10b5-1 and open-market trades.

This Form 144 documents a planned disposition of 20,116 ONTF common shares via Morgan Stanley Smith Barney with an approximate sale date of 09/09/2025. The securities were acquired as Restricted Stock Units on 09/01/2025. The filing lists multiple recent sales by Steven Vattuone, including a noted 10b5-1 sale on 08/21/2025. From a compliance perspective, the form supplies required transaction dates, amounts, broker, and aggregate market value, consistent with Rule 144 disclosure norms.

Equity Research Analyst

TL;DR: Insider selling activity is documented but not accompanied by operational or financial metrics; impact appears neutral without further context.

The filing shows planned and recent insider sales totaling material share counts over weeks: recent executed sales include 6,394; 3,549; 3,222; 5,117 (10b5-1); and 3,094 shares, producing stated gross proceeds per trade. While these amounts are meaningful at the transaction level, the form does not provide company financials or context to assess valuation impact. Investors must reference company filings for broader material implications.

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	20116	112850.76	42306290	09/09/2025	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	09/01/2025	Restricted Stock Units	Issuer			20116	09/01/2025	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
STEVEN VATTUONE 50 Beale Street, 8th Floor San Francisco CA 94105	Common	09/04/2025	6394	35274.42
STEVEN VATTUONE 50 Beale Street, 8th Floor San Francisco CA 94105	Common	09/03/2025	3549	19261.84
STEVEN VATTUONE 50 Beale Street, 8th Floor San Francisco CA 94105	Common	09/02/2025	3222	18052.22
10b5-1 Sales for STEVEN VATTUONE 50 Beale Street, 8th Floor San Francisco CA 94105	Common	08/21/2025	5117	26852.99
STEVEN VATTUONE 50 Beale Street, 8th Floor San Francisco CA 94105	Common	08/20/2025	3094	16131.50

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)