BeOne Medicines (ONC) accounting chief sells ADSs to cover tax on RSU vesting

Rhea-AI Filing Summary

BeOne Medicines Ltd. Principal Accounting Officer Titus B. Ball reported routine tax-related share sales. On June 8, 2026, he sold a total of 136 American Depositary Shares of BeOne Medicines in open-market transactions at weighted average prices of about $271.06 and $272.08. Footnotes state these sales were required under a mandatory tax withholding provision tied to the vesting of a previously granted restricted share unit award. Following these transactions, Ball reported direct ownership of 70,629 Ordinary Shares of BeOne Medicines.

Insider Trade Summary

Net Seller: 136 shares ($36,901)

Net Sell 3 txns

Insider Ball Titus B.

Role Principal Accounting Officer

Sold 136 shs ($37K)

Type	Security	Shares	Price	Value
Sale	American Depositary Shares	100	$271.0576	$27K
Sale	American Depositary Shares	36	$272.08	$10K
holding	Ordinary Shares	--	--	--

Holdings After Transaction: American Depositary Shares — 36 shares (Direct, null); Ordinary Shares — 70,629 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. 1/4th of the securities will vest on each anniversary of June 5, 2024, subject to continued service. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $271.00 to $271.48, inclusive. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of American Depositary Shares sold at each separate price. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $272.00 to $272.24, inclusive. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of American Depositary Shares sold at each separate price.

Key Figures

ADS sold (total): 136 American Depositary Shares Sale price block 1: $271.0576 per ADS Sale price block 2: $272.0800 per ADS +2 more

5 metrics

ADS sold (total) 136 American Depositary Shares Open-market sales on June 8, 2026

Sale price block 1 $271.0576 per ADS Weighted average for 100 ADS sold

Sale price block 2 $272.0800 per ADS Weighted average for 36 ADS sold

Ordinary Shares held 70,629 Ordinary Shares Direct ownership after reported transactions

ADS to Ordinary ratio 1 ADS = 13 Ordinary Shares ADS representation per footnote

Key Terms

American Depositary Shares, restricted share unit, mandatory tax withholding provision, weighted average price

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 previously granted"

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 in the Reporting Person's restricted share unit award agreement"

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

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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^*

Ball Titus B.

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/08/2026

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								70,629	D
American Depositary Shares(1)	06/08/2026		S(2)		100	D	$271.0576(3)	36	D
American Depositary Shares(1)	06/08/2026		S(2)		36	D	$272.08(4)	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. 1/4th of the securities will vest on each anniversary of June 5, 2024, subject to continued service.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $271.00 to $271.48, inclusive. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of American Depositary Shares sold at each separate price.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $272.00 to $272.24, inclusive. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of American Depositary Shares sold at each separate price.

Remarks:

	/s/ Qing Nian, as Attorney-in-Fact	06/10/2026
	** 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)