BeOne Medicines insider plans sale of 718,718 ADS

Chan Lee has filed to sell shares of BeOne Medicines under Rule 144.

Rhea-AI Filing Summary

Chan Lee has filed to sell shares of BeOne Medicines under Rule 144. The planned transaction covers 718,718 American Depositary Shares (ADS), acquired in 2002, to be sold through Morgan Stanley Smith Barney LLC – Executive Financial Services on the NASDAQ, with a listed event date of 08/11/2026. The filing also notes that the ADS to be sold relate to the exercise of stock options for cash.

Over the prior three months, Lee reported multiple open-market sales, including 1,044 common shares for $337,932.36 on 07/30/2026 and several ADS transactions such as 1,669 ADS for $542,425.00 on 07/22/2026, 664 ADS for $200,833.44 on 07/08/2026, and additional ADS sales in June and May 2026, some under a Rule 10b5-1 trading plan.

Key Figures

ADS planned for sale: 718,718 ADS Planned sale date: 08/11/2026 Year acquired: 2002 +4 more

7 metrics

ADS planned for sale 718,718 ADS Planned Rule 144 sale through Morgan Stanley Smith Barney LLC

Planned sale date 08/11/2026 Listed transaction date for ADS sale related to stock option exercise

Year acquired 2002 Acquisition year for ADS to be sold under Rule 144

Common shares sold 1,044 shares Common stock sale on 07/30/2026

Proceeds from 07/30/2026 common sale $337,932.36 Aggregate amount for 1,044 common shares

ADS sold 07/22/2026 1,669 ADS ADS sale labeled as 10b5-1 Sales

Proceeds from 07/22/2026 ADS sale $542,425.00 Aggregate amount for 1,669 ADS

Key Terms

Rule 144, American Depositary Shares, 10b5-1 Sales, Exercise of Stock Options

4 terms

Rule 144 regulatory

"144: Securities To Be Sold"

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.

American Depositary Shares financial

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

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

10b5-1 Sales regulatory

"10b5-1 Sales for CHAN LEE Aeschengraben 27 Basel"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Exercise of Stock Options financial

"Exercise of Stock Options | Issuer | | | 2002 | 08/11/2026 | Cash"

FAQ

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

What does the ONC Form 144 filing by Chan Lee disclose?

The filing discloses that Chan Lee intends to sell 718,718 ADS of BeOne Medicines under Rule 144, with the securities acquired in 2002 and sales to be executed through Morgan Stanley Smith Barney LLC on the NASDAQ.

How many ONC ADS are planned for sale in this Form 144?

The planned sale covers 718,718 American Depositary Shares (ADS). These ADS were acquired in 2002 and are associated with the cash exercise of stock options, with the intended transaction date listed as 08/11/2026.

Which broker will handle the planned ONC Rule 144 sale for Chan Lee?

The planned Rule 144 sale will be handled by Morgan Stanley Smith Barney LLC – Executive Financial Services at 1 New York Plaza. The ADS are expected to be sold on the NASDAQ as indicated in the filing details.

What recent ONC share sales has Chan Lee reported in the last three months?

Recent activity includes 1,044 common shares sold for $337,932.36 on 07/30/2026, and ADS sales such as 1,669 ADS for $542,425.00 on 07/22/2026 and 664 ADS for $200,833.44 on 07/08/2026, plus additional ADS sales in June and May 2026.

Are Chan Lee’s recent ONC ADS sales under a Rule 10b5-1 plan?

Some of the recent ADS sales are identified as 10b5-1 Sales. For example, transactions on 07/22/2026, 07/08/2026, and 05/13/2026 are labeled as 10b5-1 Sales for Chan Lee in the transaction history.

What is the acquisition date of the ONC ADS being sold under Form 144?

The ADS to be sold under this Form 144 were acquired in 2002. The filing links these securities to the exercise of stock options for cash with a listed transaction date of 08/11/2026.

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

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Available on EDGAR 08/11/2026 - 04:31 PM Accepted by SEC EDGAR 08/11/2026 - 04:31 PM 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	0001980648
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	CHAN LEE
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	Officer

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	2002	718718.00	57914782	08/11/2026	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	08/11/2026	Exercise of Stock Options	Issuer			2002	08/11/2026	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
CHAN LEE Aeschengraben 27 Basel V8 4051	Common	07/30/2026	1044	337932.36
10b5-1 Sales for CHAN LEE Aeschengraben 27 Basel V8 4051	ADS	07/22/2026	1669	542425.00
10b5-1 Sales for CHAN LEE Aeschengraben 27 Basel V8 4051	ADS	07/08/2026	664	200833.44
CHAN LEE Aeschengraben 27 Basel V8 4051	ADS	06/16/2026	590	156925.25
CHAN LEE Aeschengraben 27 Basel V8 4051	ADS	06/11/2026	428	110267.78
CHAN LEE Aeschengraben 27 Basel V8 4051	ADS	06/08/2026	871	235539.14
10b5-1 Sales for CHAN LEE Aeschengraben 27 Basel V8 4051	ADS	05/13/2026	332	103159.04

144: Remarks and Signature

Remarks
Date of Notice	08/11/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/14/2025
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/ Chan Lee
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)