Ex-BeOne director plans $788K ADS stake sale

BeOne Medicines Ltd. (ONC) has a notice of proposed sale under Rule 144 filed for securities beneficially owned by former director Corazon D. Sanders.

Rhea-AI Filing Summary

BeOne Medicines Ltd. (ONC) has a notice of proposed sale under Rule 144 filed for securities beneficially owned by former director Corazon D. Sanders. The notice covers the planned sale of 2,075 ADS of BeOne Medicines Ltd., with an aggregate market value of $788,500.00, to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services on or after 08/25/2026 on the NASDAQ market. The ADS were acquired by exercise of options under a registered plan for cash. In the preceding three months, Sanders sold 945 shares of common stock of BeOne Medicines Ltd. on 06/15/2026 for aggregate proceeds of $250,893.81.

Key Figures

ADS to be sold: 2,075 ADS Aggregate market value of ADS: $788,500.00 Planned sale date for ADS: 08/25/2026 +2 more

5 metrics

ADS to be sold 2,075 ADS Planned sale under Rule 144 for BeOne Medicines Ltd.

Aggregate market value of ADS $788,500.00 Value associated with the 2,075 ADS to be sold

Planned sale date for ADS 08/25/2026 Date associated with the Rule 144 ADS sale

Common shares sold in past 3 months 945 shares Common stock of BeOne Medicines Ltd. sold on 06/15/2026

Proceeds from prior common share sale $250,893.81 Aggregate proceeds from sale of 945 common shares on 06/15/2026

Key Terms

Rule 144, ADS, Exercise of Options Under a Registered Plan

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

ADS financial

"ADS | Morgan Stanley Smith Barney LLC Executive Financial Services"

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.

Exercise of Options Under a Registered Plan financial

"Exercise of Options Under a Registered Plan | Issuer"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What securities are being sold under Rule 144 for BeOne Medicines Ltd. (ONC)?

The notice covers the proposed sale of 2,075 American Depositary Shares (ADS) of BeOne Medicines Ltd., with an aggregate market value of $788,500.00, to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services.

Who is selling BeOne Medicines Ltd. (ONC) shares under this Form 144?

The securities are to be sold for the account of Corazon D. Sanders, identified as a Former Director of BeOne Medicines Ltd.

How and when were the BeOne Medicines Ltd. (ONC) ADS to be sold acquired?

The 2,075 ADS to be sold on or after 08/25/2026 were acquired by exercise of options under a registered plan, with the form indicating the acquisition method as Cash.

On which market will the BeOne Medicines Ltd. (ONC) ADS be sold?

The notice states that the ADS of BeOne Medicines Ltd. are to be sold on the NASDAQ market.

What BeOne Medicines Ltd. (ONC) shares has Corazon D. Sanders sold in the past 3 months?

In the preceding three months, 945 shares of common stock of BeOne Medicines Ltd. were sold on 06/15/2026 for aggregate proceeds of $250,893.81.

Which broker is handling the BeOne Medicines Ltd. (ONC) Rule 144 sale?

The proposed sale of 2,075 ADS is to be handled by Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, NY.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/25/2026 - 04:02 PM EDT Accepted by SEC EDGAR 08/25/2026 - 04:01 PM EDT 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	0001796536
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	BeOne Medicines Ltd.
SEC File Number	001-37686
Address of Issuer	Aeschengraben 27 Basel SWITZERLAND 4051
Phone	41616851900
Name of Person for Whose Account the Securities are To Be Sold	CORAZON D. SANDERS
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	Former Director

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	2075	788500.00	57914782	08/25/2026	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	08/25/2026	Exercise of Options Under a Registered Plan	Issuer			2075	08/25/2026	Cash

* 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
CORAZON D. SANDERS 94 Solaris Avenue, Camana Bay Grand Cayman E9 KY1 1108	Common	06/15/2026	945	250893.81

144: Remarks and Signature

Remarks
Date of Notice	08/25/2026
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/ Corazon D. Sanders
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)