BeOne Medicines (ONC) director sells 212 ADS to cover tax withholding

Rhea-AI Filing Summary

BeOne Medicines Ltd. director Sanders Corazon (Corsee) D. reported a small tax-related share sale. On May 22, 2026, the director sold 212 American Depositary Shares at $309.5896 per ADS, with each ADS representing 13 Ordinary Shares. The sale was mandated under a tax withholding provision tied to the vesting of a restricted share unit award, rather than a discretionary market trade.

Following this transaction, the director holds 54,470 Ordinary Shares directly and no American Depositary Shares. The footnotes state that the restricted share units vest based on service on the board, with potential accelerated vesting upon a change in control or certain termination events.

Insider Trade Summary

Net Seller: 212 shares ($65,633)

Net Sell 2 txns

Insider Sanders Corazon (Corsee) D.

Role null

Sold 212 shs ($66K)

Type	Security	Shares	Price	Value
Sale	American Depositary Shares	212	$309.5896	$66K
holding	Ordinary Shares	--	--	--

Holdings After Transaction: American Depositary Shares — 0 shares (Direct, null); Ordinary Shares — 54,470 shares (Direct, null)

Footnotes (1)

1. Each American Depositary Share represents 13 Ordinary Shares. The sale was effected pursuant to a mandatory tax withholding provision in the Reporting Person's restricted share unit award agreement in connection with the vesting of a restricted share unit award previously granted to the Reporting Person. The restricted share units shall become fully vested on the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the director resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events.

Key Figures

ADS sold: 212 American Depositary Shares Sale price per ADS: $309.5896 per ADS Post-transaction Ordinary Shares: 54,470 Ordinary Shares +1 more

4 metrics

ADS sold 212 American Depositary Shares Open-market sale on May 22, 2026

Sale price per ADS $309.5896 per ADS Price reported for the 212 ADS sale

Post-transaction Ordinary Shares 54,470 Ordinary Shares Shares held directly after the transaction

ADS-to-Ordinary ratio 1 ADS = 13 Ordinary Shares Equivalence disclosed in footnote

Key Terms

American Depositary Shares, restricted share unit, mandatory tax withholding provision, change in control

4 terms

American Depositary Shares financial

"Each American Depositary Share represents 13 Ordinary Shares."

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.

restricted share unit financial

"in connection with the vesting of a restricted share unit award"

A restricted share unit (RSU) is a promise by a company to give an employee a set number of company shares at a future date, typically after meeting time or performance conditions. For investors, RSUs matter because when they convert into actual shares they increase the number of shares outstanding (like unlocking more tickets in a game), which can dilute existing holders, and they align employee incentives with company performance, influencing behavior and long-term value.

mandatory tax withholding provision financial

"The sale was effected pursuant to a mandatory tax withholding provision"

change in control financial

"Unvested securities are subject to accelerated vesting upon a change in control"

A "change in control" occurs when the ownership or management of a company shifts significantly, such as through a merger, acquisition, or sale of a large part of its assets. This change can impact how the company is run and may influence its future direction. For investors, it matters because it can affect the company's stability, strategy, and value, often signaling potential changes in investment risk or opportunity.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Sanders Corazon (Corsee) D.

(Last) (First) (Middle)

C/O BEONE MEDICINES I GMBH

AESCHENGRABEN 27, 21ST FLOOR

(Street)

BASEL 4051

(City) (State) (Zip)

SWITZERLAND

(Country)

2. Issuer Name and Ticker or Trading Symbol
BeOne Medicines Ltd. [ ONC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/22/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares								54,470	D
American Depositary Shares(1)	05/22/2026		S(2)		212	D	$309.5896	0	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Each American Depositary Share represents 13 Ordinary Shares.

2. The sale was effected pursuant to a mandatory tax withholding provision in the Reporting Person's restricted share unit award agreement in connection with the vesting of a restricted share unit award previously granted to the Reporting Person. The restricted share units shall become fully vested on the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the director resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events.

Remarks:

	/s/ Qing Nian, as Attorney-in-Fact	05/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did BeOne Medicines (ONC) disclose for director Sanders Corazon?

BeOne Medicines director Sanders Corazon reported selling 212 American Depositary Shares. The transaction occurred on May 22, 2026, and was executed to satisfy mandatory tax withholding obligations tied to the vesting of a restricted share unit award rather than a discretionary open-market sale.

At what price were the BeOne Medicines (ONC) ADS sold in this insider transaction?

The 212 American Depositary Shares were sold at $309.5896 per ADS. Each ADS represents 13 Ordinary Shares of BeOne Medicines, so the reported price reflects the value of the underlying Ordinary Shares bundled into each ADS unit.

How many BeOne Medicines (ONC) shares does the director hold after the reported sale?

After the reported transaction, the director holds 54,470 Ordinary Shares directly. The filing shows zero American Depositary Shares remaining, so the director’s continuing equity exposure is entirely through Ordinary Shares rather than ADS instruments.

Why was the BeOne Medicines (ONC) ADS sale categorized as tax withholding related?

A footnote explains the ADS sale was executed under a mandatory tax withholding provision in the director’s restricted share unit award agreement. The sale covered tax obligations triggered by vesting, distinguishing it from a discretionary decision to reduce exposure to BeOne Medicines stock.

How do BeOne Medicines (ONC) American Depositary Shares relate to Ordinary Shares?

Each American Depositary Share of BeOne Medicines represents 13 Ordinary Shares. This ratio is disclosed in the footnotes, meaning ADS transactions effectively bundle multiple Ordinary Shares into a single traded ADS unit on the market.