ONC (NASDAQ: ONC): Insider ADS sales reported in June 2026

Rhea-AI Filing Summary

Form 144 filing reports ADS dispositions by an affiliate of the issuer. The notice lists ADS as the security type with dates in June 2026 and specific recent dispositions: 1,949 ADS for $501,354.72 on 06/11/2026 and 4,940 ADS for $1,336,547.63 on 06/08/2026. The filing also references a restricted stock vesting under a registered plan dated 06/15/2026.

Insights

Compliance Officer

Form 144 lists specific ADS dispositions and a restricted‑stock vesting event in June 2026.

The filing documents sales of ADS with dollar values attached and a separate line for restricted stock vesting under a registered plan. The entries appear as standard Section 16 disposition notices and include transaction dates and amounts.

Timing and cash‑flow recipients are the sellers/issuer as shown; regulatory compliance and reporting completeness are the main items to verify in subsequent broker or Form 4 disclosures.

Key Figures

Reported ADS line item: 3,693 (unit shown in excerpt) ADS sold on 06/11/2026: 1,949 ADS Proceeds or value for 06/11 sale: $501,354.72 +3 more

6 metrics

Reported ADS line item 3,693 (unit shown in excerpt) listed with 06/16/2026 on the securities line

ADS sold on 06/11/2026 1,949 ADS sale reported for John Oyler on 06/11/2026

Proceeds or value for 06/11 sale $501,354.72 associated with the 1,949 ADS sale on 06/11/2026

ADS sold on 06/08/2026 4,940 ADS sale reported for John Oyler on 06/08/2026

Proceeds or value for 06/08 sale $1,336,547.63 associated with the 4,940 ADS sale on 06/08/2026

Restricted stock vesting date 06/15/2026 Restricted Stock Vesting Under a Registered Plan (ADS)

Key Terms

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

4 terms

Form 144 regulatory

"144: Securities To Be Sold — Form 144 disposition notice"

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.

ADS market

"ADS | 06/15/2026 | Restricted Stock Vesting Under a Registered Plan"

Ads are paid promotional messages a company places across media — online, on TV, in print, or on social platforms — to attract customers, explain products, or shape public perception. For investors, ads matter because they drive sales growth, affect how much a company must spend to win customers, and influence brand strength and long-term value. Ads can also create regulatory or reputational risk if claims are misleading, which can affect profits and stock price.

Restricted Stock Vesting Under a Registered Plan financial

"Restricted Stock Vesting Under a Registered Plan | Issuer | 06/15/2026"

Issuer regulatory

"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

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	3693	980686.49	54885669	06/16/2026	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	06/15/2026	Restricted Stock Vesting Under a Registered Plan	Issuer			3693	06/15/2026	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
JOHN OYLER 94 Solaris Avenue, Camana Bay Grand Cayman E9 KY1 1108	ADS	06/11/2026	1949	501354.72
JOHN OYLER 94 Solaris Avenue, Camana Bay Grand Cayman E9 KY1 1108	ADS	06/08/2026	4940	1336547.63

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 the ONC Form 144 disclose about recent ADS sales?

The Form 144 discloses two ADS dispositions in June 2026: 1,949 ADS for $501,354.72 on 06/11/2026 and 4,940 ADS for $1,336,547.63 on 06/08/2026. These entries are reported as sales by an affiliate in the filing.

Does the filing show any equity vesting events for ONC?

Yes. The filing lists a Restricted Stock Vesting Under a Registered Plan dated 06/15/2026 for ADS, recorded under the issuer line. The entry identifies the vesting event but does not state the number of vested ADS in the excerpt.

Who is the named seller in the Form 144 excerpt for ONC?

The excerpt names John Oyler with an address in the Cayman Islands as the reporting person tied to the ADS dispositions on 06/11/2026 and 06/08/2026. The filing lists the transactions and associated dollar amounts under his name.

Are proceeds recipients or method of sale detailed in the excerpt?

The excerpt shows dollar amounts for the reported ADS dispositions but does not specify the method of sale or the recipient of proceeds. The filing lists values and dates; further broker or Form 4 records would clarify execution details.