SCHEDULE 13G/A

AXT Inc

Common Stock, $0.001 par value · CUSIP: 00246W103

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: 2,760,847.00 · Class: 4.2%

• Jane Street Capital, LLC

  Shares: 2,081,165.00 · Class: 3.2%

• Jane Street Global Trading, LLC

  Shares: 679,682.00 · Class: 1.0%

• Jane Street Singapore Pte. Ltd

  Shares: 0.00 · Class: 0.0%

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