BeOne Medicines (ONC) Principal Accounting Officer Titus B. Ball Sells 132 ADS

What Happened
Titus B. Ball, Principal Accounting Officer of BeOne Medicines (ONC), sold 132 American Depositary Shares (ADS) on September 1, 2026, at $355.86 per ADS, generating gross proceeds of $46,974. The sale was made to satisfy a mandatory tax-withholding obligation in connection with the vesting of a previously granted restricted share unit (RSU) award.

Key Details

• Transaction date and price: 2026-09-01 — 132 ADS sold at $355.86 each; total ≈ $46,974.
• ADS to ordinary share conversion: 1 ADS = 13 ordinary shares → 132 ADS = 1,716 ordinary shares.
• Reason: Sale effected pursuant to mandatory tax withholding under the Reporting Person's RSU award agreement (vesting-related).
• Vesting schedule note: 1/4 of the securities vest each anniversary of August 31, 2023, subject to continued service.
• Shares owned after transaction: Not specified in the provided filing.
• Filing timeliness: Form 4 filed 2026-09-03 for a 2026-09-01 transaction (filed within the standard reporting window).

Context
This was a tax-withholding sale tied to RSU vesting rather than an independent open-market decision to reduce or add to holdings. Such withholding sales are routine and do not necessarily indicate the insider’s view of the company’s prospects.