Proposed ADS sale reported for ONC (NASDAQ: ONC) on 06/08/2026

Rhea-AI Filing Summary

The issuer reported a proposed sale of ADS securities on NASDAQ, filed on 06/08/2026. The filing lists 36,900.64 ADS and references a 06/05/2026 transaction date tied to Restricted Stock Vesting Under a Registered Plan.

Insights

Securities Counsel

Form 144 notice of proposed ADS sale linked to restricted stock vesting.

The filing records a proposed disposition of 36,900.64 ADS with a transaction date of 06/05/2026 and a filing date of 06/08/2026. It identifies the source as Restricted Stock Vesting Under a Registered Plan.

The cash‑flow treatment and purchaser details are not disclosed in the excerpt; timing and execution depend on the seller complying with Section 144 notice requirements and market conditions. Subsequent filings may report completion or sales details.

Key Figures

ADS quantity: 36,900.64 ADS Filing date: 06/08/2026 Transaction date: 06/05/2026 +2 more

5 metrics

ADS quantity 36,900.64 ADS listed in the filing as the securities to be sold

Filing date 06/08/2026 date the Form 144 entry shows

Transaction date 06/05/2026 date tied to restricted stock vesting under a registered plan

Market listed NASDAQ exchange shown in the securities section

Broker/agent Morgan Stanley Smith Barney LLC firm listed with address in the filing

Key Terms

ADS, Form 144, Restricted Stock Vesting Under a Registered Plan

3 terms

ADS financial

"Securities Information ADS ... NASDAQ"

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Form 144 regulatory

"form_type: 144 ... Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Vesting Under a Registered Plan financial

"Restricted Stock Vesting Under a Registered Plan Issuer"

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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
ADS	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	136	36900.64	54885669	06/08/2026	NASDAQ

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 *
ADS	06/05/2026	Restricted Stock Vesting Under a Registered Plan	Issuer			136	06/05/2025	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

Nothing to Report

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)

FAQ

What does ONC's Form 144 report?

The filing reports a proposed sale of ADS with a listed quantity of 36,900.64 ADS and a filing date of 06/08/2026. It links the sale to vesting from a registered restricted stock plan on 06/05/2026.

Does the Form 144 confirm the ADSs were sold?

No. The form is a notice of a proposed sale; it records the intended transaction date 06/05/2026 and the filing date 06/08/2026, but it does not provide a completion confirmation or sale proceeds.

What is the source of the ADSs in the filing?

The entry explicitly states the ADSs arose from Restricted Stock Vesting Under a Registered Plan, dated 06/05/2026, indicating the shares became eligible for resale upon vesting under a registered plan.

Where will the ADSs trade according to the filing?

The filing lists NASDAQ as the market in the securities section. The form records exchange information alongside the ADS quantity and filing date 06/08/2026.

Who is listed as handling the transaction in the filing?

The excerpt shows Morgan Stanley Smith Barney LLC Executive Financial Services at the address provided, indicating the broker or firm associated with the notice on 06/08/2026.