AmBase Corp
AmBase Corp (OTC: ABCP) is a holding company with a single material asset: an equity investment in 111 West 57th Street, a residential development property in New York City, acquired in 2013. The company generates no operating revenue from this investment and has recorded net losses in each reported period, including a net loss of $4,560,000 ($0.05 per share) for the year ended December 31, 2025. Operations are funded through related-party loans, primarily from R.A. Bianco, who had made cumulative additional loans to the company aggregating $3,600,000 as of December 31, 2025, plus further loans of $400,000 in January and February 2026. The company carries a going concern qualification from its auditors, Marcum LLP, reflecting a working capital deficiency and ongoing need to raise funds. AmBase is incorporated in Delaware and headquartered in Hartford, Connecticut, and has operated under this structure at least through the fiscal year ended December 31, 2025.
Products & Services
The company's sole disclosed asset is an equity investment in the 111 West 57th Street residential development property in New York City, acquired in 2013.
Revenue Model
AmBase generates no disclosed operating revenue. The company funds operations through related-party loans from R.A. Bianco and, in 2024, through an equity offering that was used in part to repay prior outstanding loans aggregating $3,548,000 plus accrued interest.
Customers & Markets
The end market is New York City luxury residential real estate, specifically tied to the 111 West 57th Street development. No tenants, customers, or occupancy data are disclosed in the filing excerpts.
Geographic Exposure
Concentrated entirely in New York City, New York, through the 111 West 57th Street equity investment. Corporate headquarters is Hartford, Connecticut.
Financial Snapshot
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