SCHEDULE 13G

CAPITAL PROPERTIES INC /RI/

Class A Common Stock, $.01 par value · CUSIP: 140430109

Event date: 2025-09-30

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

• P. Oppenheimer Investment Parternship, LP

  Shares: 292,967 · Class: 4.44%

• Oppenheimer-Close Investment Partnership, LP

  Shares: 5,091 · Class: 0.08%

• Oppenheimer + Close, LLC

  Shares: 50,065 · Class: 0.76%

• Oppvest, LLC

  Shares: 298,058 · Class: 4.52%

• Carl K. Oppenheimer

  Shares: 348,123 · Class: 5.27%

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