Accounting Policies, by Policy (Policies)

6 Months Ended

Jun. 30, 2025

Summary of Significant Accounting Policies [Abstract]

Basis of Presentation

The accompanying condensed consolidated financial statements of AmBase Corporation and subsidiaries (“AmBase” or the “Company”) are unaudited and subject to year-end adjustments. All material intercompany transactions and balances have been eliminated. In the opinion of management, these financial statements reflect all adjustments, consisting only of normal recurring adjustments unless otherwise disclosed, necessary for a fair presentation of the Company’s consolidated financial position, results of operations and cash flows. Results for interim periods are not necessarily indicative of results for the full year. The unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 8 of Regulation S-X. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that it deems reasonable, that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from such estimates and assumptions. The unaudited interim condensed consolidated financial statements presented herein are condensed and should be read in conjunction with the Company’s consolidated financial statements filed in its Annual Report on Form 10‑K for the year ended December 31, 2024.

New Accounting Pronouncements

New accounting pronouncements

On December 14, 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU requires the use of consistent categories and greater disaggregation in tax rate reconciliations and income taxes paid disclosures. These amendments are effective for fiscal years beginning after December 15, 2024. These income tax disclosure requirements can be applied either prospectively or retrospectively to all periods presented in the financial statements. We are currently evaluating the impact of adopting this standard; however, we do not expect it to have a material impact on our consolidated financial statements.

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendments in this update require footnote disclosures on disaggregated information about specific categories underlying certain income statement expense line items that are considered relevant. This includes items such as employee compensation. The amendments in ASU 2024-03 are effective for fiscal years beginning after December 15, 2026. Early adoption is permitted. We are currently evaluating the impact of adopting this standard; however, we do not expect it to impact the Company’s consolidated financial position, results of operations, or cash flows.

Other new accounting pronouncements issued, but not effective until after June 30, 2025, did not and are not expected to have a material impact on our financial position, results of operations or liquidity.