AmBase Corp

Symbol
ABCP on OTC
Business address
7857 West Sample Road, Suite 134, Coral Springs, FL, 33065
Fiscal year end
31 December
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AmBase Corp has filed 445 SEC EDGAR filings since 12 Feb 1996

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
8-K Open Document | Data Open Filing 8-K 19 Dec 2025 18 Dec 2025 001-07265
8-K Open Document | Data Open Filing 8-K 26 Nov 2025 25 Nov 2025 001-07265
10-Q Open Document | Data Open Filing 10-Q 06 Nov 2025 30 Sep 2025 001-07265
8-K Open Document | Data Open Filing 8-K 29 Sep 2025 26 Sep 2025 001-07265
8-K Open Document | Data Open Filing 8-K 11 Sep 2025 10 Sep 2025 001-07265
10-Q Open Document | Data Open Filing QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) 13 Aug 2025 30 Jun 2025 001-07265
8-K Open Document | Data Open Filing 8-K 25 Jul 2025 22 Jul 2025 001-07265
8-K Open Document | Data Open Filing 8-K 23 Jun 2025 23 Jun 2025 001-07265
8-K Open Document | Data Open Filing 8-K 09 Jun 2025 06 Jun 2025 001-07265
8-K Open Document | Data Open Filing 8-K 02 Jun 2025 27 May 2025 001-07265
10-Q Open Document | Data Open Filing 10-Q 13 May 2025 31 Mar 2025 001-07265
DEFA14A Open Document Open Filing DEFA14A 23 Apr 2025 001-07265
8-K Open Document | Data Open Filing 8-K 22 Apr 2025 22 Apr 2025 001-07265
8-K Open Document | Data Open Filing 8-K 27 Mar 2025 26 Mar 2025 001-07265
DEF 14A Open Document | Data Open Filing DEF 14A 25 Mar 2025 06 Jun 2025 001-07265
10-K Open Document | Data Open Filing 10-K 24 Mar 2025 31 Dec 2024 001-07265
8-K Open Document | Data Open Filing 8-K 13 Mar 2025 10 Mar 2025 001-07265
8-K Open Document | Data Open Filing 8-K 05 Dec 2024 04 Dec 2024 001-07265
10-Q Open Document | Data Open Filing 10-Q 13 Nov 2024 30 Sep 2024 001-07265
8-K Open Document | Data Open Filing 8-K 24 Sep 2024 23 Sep 2024 001-07265
8-K Open Document | Data Open Filing 8-K 21 Aug 2024 19 Aug 2024 001-07265
10-Q Open Document | Data Open Filing 10-Q 09 Aug 2024 30 Jun 2024 001-07265
8-K Open Document | Data Open Filing 8-K 05 Jun 2024 04 Jun 2024 001-07265
10-Q Open Document | Data Open Filing 10-Q 09 May 2024 31 Mar 2024 001-07265
SC 13D/A Open Document Open Filing SC 13D/A 01 May 2024 005-36772
4 Open Document Open Filing FORM 4 01 May 2024 30 Apr 2024
4 Open Document Open Filing PRIMARY DOCUMENT 01 May 2024 29 Apr 2024
8-K Open Document | Data Open Filing 8-K 01 May 2024 29 Apr 2024 001-07265
DEFA14A Open Document Open Filing DEFA14A 03 Apr 2024 001-07265
DEF 14A Open Document Open Filing DEF 14A 03 Apr 2024 04 Jun 2024 001-07265
SC 13D/A Open Document Open Filing SC 13D/A 01 Apr 2024 005-36772
8-K Open Document | Data Open Filing 8-K 01 Apr 2024 01 Apr 2024 001-07265
SC 13D/A Open Document Open Filing 26 Mar 2024 005-36772
PRE 14A Open Document Open Filing PRE 14A 22 Mar 2024 04 Jun 2024 001-07265
10-K Open Document | Data Open Filing 10-K 18 Mar 2024 31 Dec 2023 001-07265
SC 13D/A Open Document Open Filing 13 Mar 2024 005-36772
8-K Open Document | Data Open Filing 8-K 11 Mar 2024 08 Mar 2024 001-07265
SC 13D/A Open Document Open Filing SC 13D/A 08 Mar 2024 005-36772
4 Open Document Open Filing FORM 4 07 Mar 2024 28 Feb 2024
8-K Open Document | Data Open Filing 8-K 28 Feb 2024 28 Feb 2024 001-07265
8-K Open Document | Data Open Filing 8-K 27 Feb 2024 26 Feb 2024 001-07265
SC 13D/A Open Document Open Filing 23 Feb 2024 005-36772
8-K Open Document | Data Open Filing 8-K 23 Feb 2024 23 Feb 2024 001-07265
SC 13D/A Open Document Open Filing 20 Feb 2024 005-36772
4 Open Document Open Filing 20 Feb 2024 15 Feb 2024
8-K Open Document | Data Open Filing 8-K 08 Feb 2024 05 Feb 2024 001-07265
8-K Open Document | Data Open Filing 8-K 26 Jan 2024 26 Jan 2024 001-07265
8-K Open Document | Data Open Filing 8-K 28 Dec 2023 27 Dec 2023 001-07265
8-K Open Document | Data Open Filing 8-K 28 Nov 2023 27 Nov 2023 001-07265
10-Q Open Document | Data Open Filing 10-Q 09 Nov 2023 30 Sep 2023 001-07265
4 Open Document Open Filing 11 Oct 2023 09 Oct 2023
8-K Open Document | Data Open Filing 8-K 10 Oct 2023 06 Oct 2023 001-07265
4 Open Document Open Filing 26 Sep 2023 22 Sep 2023
4 Open Document Open Filing 12 Sep 2023 08 Sep 2023
SC 13D/A Open Document Open Filing 29 Aug 2023 005-36772
4 Open Document Open Filing 29 Aug 2023 25 Aug 2023
8-K Open Document | Data Open Filing 8-K 15 Aug 2023 15 Aug 2023 001-07265
4 Open Document Open Filing PRIMARY DOCUMENT 03 Aug 2023 01 Aug 2023
10-Q Open Document | Data Open Filing 10-Q 01 Aug 2023 30 Jun 2023 001-07265
8-K Open Document | Data Open Filing 8-K 20 Jul 2023 19 Jul 2023 001-07265
4 Open Document Open Filing 29 Jun 2023 27 Jun 2023
8-K Open Document | Data Open Filing 8-K 26 Jun 2023 22 Jun 2023 001-07265
4 Open Document Open Filing 14 Jun 2023 12 Jun 2023
4 Open Document Open Filing 09 Jun 2023 07 Jun 2023
8-K Open Document | Data Open Filing 8-K 02 Jun 2023 01 Jun 2023 001-07265
4 Open Document Open Filing PRIMARY DOCUMENT 02 Jun 2023 01 Jun 2023
SC 13D/A Open Document Open Filing 31 May 2023 005-36772
4 Open Document Open Filing PRIMARY DOCUMENT 30 May 2023 26 May 2023
4 Open Document Open Filing 26 May 2023 08 May 2023
8-K Open Document | Data Open Filing 8-K 11 May 2023 10 May 2023 001-07265
4 Open Document Open Filing 10 May 2023 08 May 2023
10-Q Open Document | Data Open Filing 10-Q 02 May 2023 31 Mar 2023 001-07265
8-K Open Document | Data Open Filing 8-K 10 Apr 2023 06 Apr 2023 001-07265
DEF 14A Open Document Open Filing AMBASE PROXY STATEMENT 2023 FOR YEAR END 2022 30 Mar 2023 31 Mar 2023 001-07265
10-K Open Document | Data Open Filing 10-K 28 Mar 2023 31 Dec 2022 001-07265
8-K Open Document | Data Open Filing 8-K 09 Feb 2023 09 Feb 2023 001-07265
4 Open Document Open Filing 30 Jan 2023 27 Jan 2023
3 Open Document Open Filing PRIMARY DOCUMENT 20 Jan 2023 20 Jan 2023
8-K Open Document | Data Open Filing 8-K 20 Jan 2023 20 Jan 2023 001-07265
4 Open Document Open Filing 29 Dec 2022 27 Dec 2022
4 Open Document Open Filing 27 Dec 2022 23 Dec 2022
10-Q Open Document | Data Open Filing 10-Q 03 Nov 2022 30 Sep 2022 001-07265
10-Q Open Document | Data Open Filing 10-Q 05 Aug 2022 30 Jun 2022 001-07265
8-K Open Document | Data Open Filing 8-K 03 Jun 2022 02 Jun 2022 001-07265
10-Q Open Document | Data Open Filing 10-Q 05 May 2022 31 Mar 2022 001-07265
4 Open Document Open Filing PRIMARY DOCUMENT 12 Apr 2022 11 Apr 2022
DEF 14A Open Document Open Filing PROXY STATEMENT 2022 29 Mar 2022 02 Jun 2022 001-07265
10-K Open Document | Data Open Filing 10-K 25 Mar 2022 31 Dec 2021 001-07265
5 Open Document Open Filing PRIMARY DOCUMENT 09 Feb 2022 31 Dec 2021
10-Q Open Document | Data Open Filing 10-Q 09 Nov 2021 30 Sep 2021 001-07265
10-Q Open Document | Data Open Filing 10-Q 10 Aug 2021 30 Jun 2021 001-07265
8-K Open Document Open Filing FORM 8-K ANNUAL MEETING VOTE RESULTS 6-3-2021 04 Jun 2021 04 Jun 2021 001-07265
10-Q Open Document | Data Open Filing 10-Q 11 May 2021 31 Mar 2021 001-07265
DEF 14A Open Document Open Filing AMBASE ANNUAL PROXY STATEMENT 2021 26 Mar 2021 31 Dec 2020 001-07265
10-K Open Document | Data Open Filing 10-K 24 Mar 2021 31 Dec 2020 001-07265
SC 13D/A Open Document Open Filing SC 13D/A 05 Feb 2021 005-36772
4 Open Document Open Filing PRIMARY DOCUMENT 05 Jan 2021 05 Jan 2021
10-Q Open Document | Data Open Filing 10-Q 10 Nov 2020 30 Sep 2020 001-07265
10-Q Open Document | Data Open Filing 10-Q 10 Aug 2020 30 Jun 2020 001-07265
8-K Open Document Open Filing FORM 8-K ANNUAL MEETING 2020 VOTING RESULTS 04 Jun 2020 04 Jun 2020 001-07265
4 Open Document Open Filing PRIMARY DOCUMENT 22 May 2020 20 May 2020
4 Open Document Open Filing PRIMARY DOCUMENT 22 May 2020 20 May 2020
DEFA14A Open Document Open Filing AMBASE CHANGE IN 2020 ANNUAL MEETING VENUE 19 May 2020 001-07265
10-Q Open Document | Data Open Filing 10-Q 07 May 2020 31 Mar 2020 001-07265
DEF 14A Open Document Open Filing PROXY 2020 25 Mar 2020 31 Dec 2019 001-07265
10-K Open Document | Data Open Filing 10-K 25 Mar 2020 31 Dec 2019 001-07265
8-K Open Document Open Filing FORM 8K ISZO CASE DISCONTINUANCE 1-2020 15 Jan 2020 15 Jan 2020 001-07265
3 Open Document Open Filing PRIMARY DOCUMENT 09 Jan 2020 31 Dec 2019
SC 13D/A Open Document Open Filing AMENDMENT NO. 4 TO THE SCHEDULE 13D 08 Jan 2020 005-36772
SC 13D Open Document Open Filing SC 13D 07 Jan 2020 005-36772
4 Open Document Open Filing 02 Jan 2020 30 Dec 2019
10-Q Open Document | Data Open Filing 10-Q 12 Nov 2019 30 Sep 2019 001-07265
10-Q Open Document | Data Open Filing 10-Q 12 Aug 2019 30 Jun 2019 001-07265
8-K Open Document Open Filing AMBASE ANNUAL MEETING 6-2019 VOTE RESULTS 07 Jun 2019 07 Jun 2019 001-07265
4 Open Document Open Filing FORM 4 05 Jun 2019 03 Jun 2019
8-K Open Document Open Filing LFA AMENDMENT 21 May 2019 21 May 2019 001-07265
10-Q Open Document | Data Open Filing 10-Q 13 May 2019 31 Mar 2019 001-07265
DEF 14A Open Document Open Filing AMBASE 2019 PROXY STATEMENT 27 Mar 2019 26 Mar 2019 001-07265
10-K Open Document | Data Open Filing 10-K 27 Mar 2019 31 Dec 2018 001-07265
8-K Open Document Open Filing AMT TAX CREDIT CARRYFORWARD REFUND 04 Mar 2019 04 Mar 2019 001-07265
8-K Open Document Open Filing FORM 8-K APPEAL COURT DECISION SPRUCE APPEAL 18 Jan 2019 18 Jan 2019 001-07265
10-Q Open Document | Data Open Filing 10-Q 09 Nov 2018 30 Sep 2018 001-07265
SC 13D/A Open Document Open Filing AMENDMENT NO. 3 TO THE SCHEDULE 13D 17 Oct 2018 005-36772
SC 13D/A Open Document Open Filing SEPTEMBER 20, 2018 21 Sep 2018 005-36772
4 Open Document Open Filing FORM 4 20 Sep 2018 18 Sep 2018
4/A Open Document Open Filing FORM 4/A 20 Sep 2018 07 Sep 2018
4/A Open Document Open Filing FORM 4/A 20 Sep 2018 30 Apr 2018
8-K Open Document Open Filing FORM 8-K ISZO TRIGGER RIGHTS AGREE 14 Sep 2018 14 Sep 2018 001-07265
4 Open Document Open Filing FORM 4 11 Sep 2018 07 Sep 2018
10-Q Open Document | Data Open Filing 10-Q 13 Aug 2018 30 Jun 2018 001-07265
8-K Open Document Open Filing AMBASE FORM 8-K ANNUAL MTG VOTING 08 Jun 2018 08 Jun 2018 001-07265
10-Q Open Document | Data Open Filing 10-Q 14 May 2018 31 Mar 2018 001-07265
4/A Open Document Open Filing FORM 4/A 03 May 2018 30 Apr 2018
4 Open Document Open Filing FORM 4 02 May 2018 30 Apr 2018
10-K/A Open Document Open Filing FORM 10-K AMENDMENT FOR 12-31-2017 30 Apr 2018 30 Apr 2018 001-07265
DEF 14A Open Document Open Filing AMBASE CORPORATION PROXY STATEMENT 2018 04 Apr 2018 04 Apr 2018 001-07265
10-K Open Document | Data Open Filing FORM 10-K - 12-31-2016 30 Mar 2018 31 Dec 2017 001-07265
8-K Open Document Open Filing FROM 8-K TAX LAW CHANGES 08 Mar 2018 06 Mar 2018 001-07265
SC 13D/A Open Document Open Filing FEBRUARY 21, 2018 21 Feb 2018 005-36772
8-K Open Document Open Filing COMPLETION SALE 100 PUTNAM & OTHER UPDATES 31 Jan 2018 31 Jan 2018 001-07265
8-K Open Document Open Filing ENTER INTO CONTRACT FOR SALE 100 PUTNAM 22 Jan 2018 22 Jan 2018 001-07265
4 Open Document Open Filing FORM 4 26 Dec 2017 21 Dec 2017
4 Open Document Open Filing FORM 4 06 Dec 2017 04 Dec 2017
4 Open Document Open Filing FORM 4 29 Nov 2017 27 Nov 2017
4 Open Document Open Filing FORM 4 14 Nov 2017 11 Oct 2017
SC 13D Open Document Open Filing NOVEMBER 14, 2017 14 Nov 2017 005-36772
10-Q Open Document | Data Open Filing FORM 10-Q 14 Nov 2017 30 Sep 2017 001-07265
8-K Open Document Open Filing FORM 8-K STRICT FORECLOSE & LIT FUND 26 Sep 2017 26 Sep 2017 001-07265
8-K Open Document Open Filing 111 WEST 57TH UPDATE PRELIM INJ HEARING-APPEAL 30 Aug 2017 30 Aug 2017 001-07265
8-K Open Document Open Filing 111 WEST UPDATE POSTPONEMENT OF PRELIMINARY INJUNCTION HEARING 15 Aug 2017 15 Aug 2017 001-07265
10-Q Open Document | Data Open Filing 11 Aug 2017 30 Jun 2017 001-07265
8-K Open Document Open Filing FORM 8-K 111 WEST 57TH UPDATE TRO 02 Aug 2017 02 Aug 2017 001-07265
8-K Open Document Open Filing FORM 8-K 111 WEST 57TH UPDATE 7-17 19 Jul 2017 19 Jul 2017 001-07265
8-K Open Document Open Filing FORM 8-K 111 WEST 57TH UPDATE 6-2017 29 Jun 2017 29 Jun 2017 001-07265
8-K Open Document Open Filing FORM 8-K ANNUAL MEETING VOTING 2017 01 Jun 2017 01 Jun 2017 001-07265
10-Q Open Document | Data Open Filing 11 May 2017 31 Mar 2017 001-07265
DEF 14A Open Document Open Filing AMBASE PROXY YR END 2017 ANNUAL MTG 06-01-2017 31 Mar 2017 31 Mar 2017 001-07265
10-K Open Document | Data Open Filing FORM 10-K - 12-31-2016 30 Mar 2017 31 Dec 2016 001-07265
SC 13G/A Open Document Open Filing FEBRUARY 14, 2017 14 Feb 2017 005-36772
4 Open Document Open Filing PRIMARY DOCUMENT 12 Dec 2016 09 Dec 2016
4 Open Document Open Filing PRIMARY DOCUMENT 08 Dec 2016 07 Dec 2016
10-Q Open Document | Data Open Filing 08 Nov 2016 30 Sep 2016 001-07265
10-Q Open Document | Data Open Filing 11 Aug 2016 30 Jun 2016 001-07265
3 Open Document Open Filing PRIMARY DOCUMENT 30 Jun 2016 30 Jun 2016
3 Open Document Open Filing PRIMARY DOCUMENT 30 Jun 2016 30 Jun 2016
8-K Open Document Open Filing FORM 8-K NEW DIRECTORS 30 Jun 2016 30 Jun 2016 001-07265
8-K Open Document Open Filing FORM 8-K ANNUAL MEETING VOTING RESULTS 07 Jun 2016 07 Jun 2016 001-07265
10-Q Open Document | Data Open Filing 12 May 2016 31 Mar 2016 001-07265
8-K Open Document Open Filing FORM 8-K JDS PMG 02 May 2016 02 May 2016 001-07265
DEF 14A Open Document Open Filing AMBASE PROXY 2016 11 Apr 2016 11 Apr 2016 001-07265
PRE 14A Open Document Open Filing AMBASE PRELIMINARY PROXY 2016 31 Mar 2016 31 Mar 2016 001-07265
10-K Open Document | Data Open Filing FORM 10-K - 12-31-2015 29 Mar 2016 31 Dec 2015 001-07265
4 Open Document Open Filing FORM 4 02 Mar 2016 29 Feb 2016
4 Open Document Open Filing FORM 4 26 Feb 2016 24 Feb 2016
4 Open Document Open Filing FORM 4 19 Feb 2016 17 Feb 2016
SC 13G/A Open Document Open Filing FEBRUARY 16, 2016 16 Feb 2016 005-36772
4 Open Document Open Filing FORM 4 15 Jan 2016 13 Jan 2016
4 Open Document Open Filing FORM 4 28 Dec 2015 23 Dec 2015
4 Open Document Open Filing FORM 4 08 Dec 2015 04 Dec 2015
4/A Open Document Open Filing FORM 4/A 20 Nov 2015 13 Nov 2015
4 Open Document Open Filing FORM 4 17 Nov 2015 13 Nov 2015
4 Open Document Open Filing FORM 4 12 Nov 2015 09 Nov 2015
10-Q Open Document | Data Open Filing 10 Nov 2015 30 Sep 2015 001-07265
4 Open Document Open Filing FORM 4 30 Sep 2015 28 Sep 2015
4 Open Document Open Filing FORM 4 28 Aug 2015 26 Aug 2015
4 Open Document Open Filing FORM 4 18 Aug 2015 14 Aug 2015
10-Q Open Document | Data Open Filing 12 Aug 2015 30 Jun 2015 001-07265
4 Open Document Open Filing FORM 4 12 Aug 2015 10 Aug 2015
4 Open Document Open Filing FORM 4 03 Aug 2015 30 Jul 2015
4 Open Document Open Filing FORM 4 27 Jul 2015 23 Jul 2015
4 Open Document Open Filing FORM 4 23 Jul 2015 21 Jul 2015
4 Open Document Open Filing FORM 4 21 Jul 2015 16 Jul 2015
4/A Open Document Open Filing FORM 4/A 16 Jul 2015 14 Jul 2015
4 Open Document Open Filing FORM 4 10 Jul 2015 08 Jul 2015
SC 13G/A Open Document Open Filing JULY 10, 2015 10 Jul 2015 005-36772
4 Open Document Open Filing FORM 4 06 Jul 2015 01 Jul 2015
8-K Open Document Open Filing FORM 8-K, 111 WEST 57TH DEBT FINANCING 30 Jun 2015 30 Jun 2015 001-07265
8-K Open Document Open Filing FORM 8-K, 111 WEST 57TH DEBT FINANCING 30 Jun 2015 30 Jun 2015 001-07265
4 Open Document Open Filing FORM 4 29 Jun 2015 25 Jun 2015
3 Open Document Open Filing FORM 3 29 Jun 2015 23 Jun 2015
8-K Open Document Open Filing FORM 8-K ANNUAL MEETING SHAREHOLDER VOTE 04 Jun 2015 04 Jun 2015 001-07265
10-Q Open Document | Data Open Filing 13 May 2015 31 Mar 2015 001-07265
DEF 14A Open Document Open Filing AMBASE PROXY 205 31 Mar 2015 31 Mar 2015 001-07265
10-K Open Document | Data Open Filing FORM 10-K - 12-31-2014 30 Mar 2015 31 Dec 2014 001-07265
SC 13G Open Document Open Filing FEBRUARY 13, 2015 17 Feb 2015 005-36772
8-K Open Document Open Filing IRS CONCLUDES 2012 TAX EXAM 29 Dec 2014 29 Dec 2014 001-07265
10-Q Open Document | Data Open Filing 12 Nov 2014 30 Sep 2014 001-07265
4 Open Document Open Filing PRIMARY DOCUMENT 17 Oct 2014 16 Oct 2014
10-Q Open Document | Data Open Filing 11 Aug 2014 30 Jun 2014 001-07265
4 Open Document Open Filing PRIMARY DOCUMENT 17 Jun 2014 13 Jun 2014
4 Open Document Open Filing PRIMARY DOCUMENT 13 Jun 2014 11 Jun 2014
8-K Open Document Open Filing FORM 8-K ANNUAL MEETING VOTING RESULTS 09 Jun 2014 09 Jun 2014 001-07265
10-Q Open Document | Data Open Filing 13 May 2014 31 Mar 2014 001-07265
DEF 14A Open Document Open Filing AMBASE PROXY STATEMENT 2014 31 Mar 2014 31 Dec 2013 001-07265
10-K Open Document | Data Open Filing FORM 10-K - 12-31-2013 26 Mar 2014 31 Dec 2013 001-07265
UPLOAD Open Document Open Filing 30 Jan 2014
4 Open Document Open Filing PRIMARY DOCUMENT 28 Jan 2014 24 Jan 2014
10-Q/A Open Document Open Filing FORM 10-Q/A AMENDMENT # 1 - 06/30/2013 17 Jan 2014 30 Jun 2013 001-07265
CORRESP Open Document Open Filing 17 Jan 2014