Exhibit 32.2 Certification of Periodic Financial Report Pursuant to 18 U.S.C. 1350, the undersigned, John P. Ferrara , the Chief Financial Officer of AmBase Corporation (the "issuer"), hereby certifies that the report on Form 10-Q accompanying this certification (the "report") fully complies with the requirements of section 13(A) or 15(d) of the Securities Exchange Act of 1937 (15 U.S.C. 78 m or 78o(d)) and that information contained in the report fairly presents, in all material respects, the financial condition and results of operations of the issuer. /s/ John P. Ferrara - ---------------------------- John P. Ferrara Vice President and Chief Financial Officer (Chief Financial Officer) AmBase Corporation November 12, 2003