Companies: 10,795·Total market cap: $144.5T
AmBase Corporation

AmBase Corporation

ABCPOTCReal Estate● Active
$0.25
$-0.01(-2.00%)
Market Cap$20809859
P/E Ratio
52W High$0.326
52W Low$0.138
SEC Filings

AmBase Corporation (ABCP) SEC Filings & 10-K Annual Reports

SEC EDGAR regulatory submissions (10-K, 10-Q, 8-K), latest forms, and full filing history — quick links to financials and earnings below.

SEC EDGAR · data.sec.gov · CIK 0000020639 · ABCP · OTC · as of Jun 9, 2026

Filing snapshot

453
Total Filings
8-K
Latest Form
2026-05-29
Most Recent
1985
Filing Since

Source: SEC EDGAR (data.sec.gov) · CIK 0000020639 · Updated hourly · Not investment advice

Latest Annual Report

10-K · Annual ReportFY
Filed Date
2026-03-30
Fiscal Year End
Mar 30, 2026
Accession No.
0001140361-26-012027
Primary Document
ef20060640_10-k.htm
Source: data.sec.gov · CIK 0000020639 · Accession 0001140361-26-012027

Latest Key Filings

10-QQuarterly Report
10-Q
2026-05-11
8-KCurrent Report
8-K
2026-05-29Material Event
Form 4Insider Activity
Ownership Change Disclosures

Executive & director trade disclosures. Full buy/sell sentiment analysis on the dedicated tab.

SEC Filing History

Hide Form 4 / 144
8-KCurrent Report
8-K
2026-05-29
View
10-QQuarterly Report
10-Q
2026-05-11
View
DEF 14AProxy Statement
DEF 14A
2026-03-31
View
10-KAnnual Report
10-K
2026-03-30
View
8-KCurrent Report
8-K
2026-03-04
View
8-KCurrent Report
8-K
2026-02-25
View
8-KCurrent Report
8-K
2026-01-29
View
8-KCurrent Report
8-K
2026-01-21
View
8-KCurrent Report
8-K
2025-12-19
View
8-KCurrent Report
8-K
2025-11-26
View
10-QQuarterly Report
10-Q
2025-11-06
View
8-KCurrent Report
8-K
2025-09-29
View
8-KCurrent Report
8-K
2025-09-11
View
10-QQuarterly Report
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D)
2025-08-13
View
8-KCurrent Report
8-K
2025-07-25
View
Showing 1–15 of 357 filingsForm 4 / 144 hidden· 453 total in EDGAR

About SEC Filings & 10-K Annual Reports

Data source: SEC EDGAR (data.sec.gov)  |  Updated: Hourly  |  CIK: 0000020639  |  Exchange: OTC · Real Estate

AmBase Corporation (OTC: ABCP) has submitted 453 documents to the U.S. Securities and Exchange Commission (SEC) since its IPO in 1985. As a Real Estate sector company with CIK 0000020639, all filings are publicly accessible via the EDGAR database at no cost.

The annual 10-K report is AmBase Corporation's most comprehensive regulatory disclosure. The most recent AmBase Corporation 10-K was filed on 2026-03-30 for fiscal year ending 2026. Historical ABCP 10-K annual reports are available from 1996 through 2026.

Investors researching AmBase Corporation SEC filings can access 10-K annual reports, quarterly 10-Q reports, material event 8-K filings, and proxy statements directly from the links above. All documents are sourced from the official SEC EDGAR system.

Source: SEC EDGAR · data.sec.gov · SEC Form 10-K · SEC Form 10-Q · SEC Form 8-K2026-06-09

Frequently Asked Questions

ABCP SEC Filings · 8 questions

AmBase Corporation (ABCP) SEC filings are publicly available on this page and on the official SEC EDGAR database at sec.gov. You can browse all 453 filings and access original documents at no cost. AmBase Corporation's CIK is 0000020639.

ABCP SEC filingsAmBase Corporation SEC documentsfind ABCP 10-K