SCHEDULE 13G/A

BITDEER TECHNOLOGIES GROUP

Class A ordinary shares, par value US$0.0000001 · CUSIP: G11448100

Event date: 2026-09-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• JANE STREET GROUP, LLC

  Shares: 5,208,847.00 · Class: 2.3%

• Jane Street Capital, LLC

  Shares: 3,349,968.00 · Class: 1.5%

• Jane Street Global Trading, LLC

  Shares: 1,858,879.00 · Class: 0.8%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.