SCHEDULE 13G/A

IREN LTD

Ordinary shares, no par value · CUSIP: Q4982L109

Event date: 2025-12-31

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: 15,447,088.34 · Class: 4.7%

• Jane Street Capital, LLC

  Shares: 131,418.00 · Class: 0.0%

• Jane Street Options, LLC

  Shares: 11,910,731.00 · Class: 3.6%

• Jane Street Global Trading, LLC

  Shares: 3,404,939.34 · Class: 1.0%

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