---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-25-034689"
form_type: "8-K"
ticker: "ABCP"
cik: "0000020639"
company_name: "AmBase Corp"
filed_at: "2025-09-11T23:59:59+00:00"
generated_at: "2026-05-17T06:55:07.328245+00:00"
event_type: "debt"
sentiment: "negative"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# AmBase Corp. enters into $100K promissory note with CEO Richard A. Bianco for working capital

## Summary
- Note: $100,000 principal, 6.5% interest, due Sept 30, 2028 or earlier upon receipt of funds from certain sources.
- Option for conversion into a litigation funding agreement pari passu with third-party funders.
- Company has going concern qualification; seeking additional funding for 111 West 57th Property litigation.
- Company considering further funding alternatives up to $5M from third-party litigation funders.

## SEC filing metadata
- accession: 0001140361-25-034689
- form_type: 8-K
- ticker: ABCP
- cik: 0000020639
- company_name: AmBase Corp
- filed_at: 2025-09-11T23:59:59+00:00
- event_type: debt
- sentiment: negative
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/20639/000114036125034689/0001140361-25-034689-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/20639/000114036125034689/ef20055480_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-25-034689
- JSON: https://secwatch.observer/filing/0001140361-25-034689.json
- Plain text: https://secwatch.observer/filing/0001140361-25-034689.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.