SCHEDULE 13G/A

BLACK SPADE ACQUISITION III

Class A ordinary shares, $0.0001 par value, included as part of the units · CUSIP: G1154S103

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

• RP Investment Advisors LP

  Shares: 0.00 · Class: 0.0%

• RP Select Opportunities Master Fund Ltd.

  Shares: 0.00 · Class: 0.0%

• RP Debt Opportunities Fund Ltd.

  Shares: 0.00 · Class: 0.0%

• RP Alternative Global Bond Fund

  Shares: 0.00 · Class: 0.0%

• RP Alternative Credit Opportunities Fund

  Shares: 0.00 · Class: 0.0%

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