IRONSTONE PROPERTIES, INC.

Industry
Blank Checks (Office Of Real Estate & Construction)
Business address
909 Montgomery Street 3 Rd Floor, San Francisco, CA, 94133
State of incorporation
DE
Fiscal year end
31 December
Former names
IRONSTONE GROUP INC (to 08 Nov 2021)
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IRONSTONE PROPERTIES, INC. has filed 186 SEC EDGAR filings since 13 Nov 1995

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
10-Q Open Document | Data Open Filing FORM 10-Q 12 Nov 2025 30 Sep 2025 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 15 Aug 2025 30 Jun 2025 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 19 May 2025 31 Mar 2025 000-12346
10-K Open Document | Data Open Filing FORM 10-K 16 Apr 2025 31 Dec 2024 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 12 Nov 2024 30 Sep 2024 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 19 Sep 2024 30 Jun 2024 000-12346
10-K Open Document | Data Open Filing FORM 10-K 19 Sep 2024 31 Dec 2023 000-12346
UPLOAD Open Document Open Filing 27 Nov 2023
UPLOAD Open Document Open Filing 30 Oct 2023
UPLOAD Open Document Open Filing 06 Oct 2023
UPLOAD Open Document Open Filing 14 Sep 2023
10-K Open Document | Data Open Filing FORM 10-K 17 May 2023 31 Dec 2022 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 22 Nov 2022 30 Sep 2022 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 08 Aug 2022 30 Jun 2022 000-12346
4 Open Document Open Filing FORM 4 08 Jul 2022 06 Jun 2022
4 Open Document Open Filing FORM 4 08 Jul 2022 27 May 2022
8-K Open Document | Data Open Filing FORM 8-K 17 Jun 2022 16 Jun 2022 000-12346
8-K Open Document | Data Open Filing FORM 8-K 14 Jun 2022 13 Jun 2022 000-12346
8-K Open Document | Data Open Filing FORM 8-K 09 Jun 2022 09 Jun 2022 000-12346
8-K Open Document | Data Open Filing FORM 8-K 01 Jun 2022 01 Jun 2022 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 17 May 2022 31 Mar 2022 000-12346
10-K Open Document | Data Open Filing FORM 10-K 31 Mar 2022 31 Dec 2021 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 08 Nov 2021 30 Sep 2021 000-12346
8-K Open Document | Data Open Filing FORM 8-K 15 Oct 2021 30 Sep 2021 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 20 Aug 2021 30 Jun 2021 000-12346
NT 10-Q Open Document Open Filing FORM NT 10-Q 16 Aug 2021 30 Jun 2021 000-12346
10-Q/A Open Document | Data Open Filing FORM 10-Q/A 28 Jun 2021 31 Mar 2021 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 17 Jun 2021 31 Mar 2021 000-12346
8-K Open Document Open Filing FORM 8-K 17 Jun 2021 17 Jun 2021 000-12346
NT 10-K Open Document Open Filing FORM NT 10-K 31 Mar 2016 31 Dec 2015 000-12346
8-K Open Document Open Filing FORM 8-K 08 Jan 2016 08 Jan 2016 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 13 Nov 2015 30 Sep 2015 000-12346
8-K Open Document Open Filing FORM 8-K 18 Sep 2015 14 Sep 2015 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 18 Aug 2015 30 Jun 2015 000-12346
NT 10-Q Open Document Open Filing FORM NT 10-Q 13 Aug 2015 30 Jun 2015 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 20 May 2015 31 Mar 2015 000-12346
NT 10-Q Open Document Open Filing FORM NT 10-Q 18 May 2015 31 Mar 2015 000-12346
10-K Open Document | Data Open Filing FORM 10-K 15 Apr 2015 31 Dec 2014 000-12346
NT 10-K Open Document Open Filing FORM NT 10-K 01 Apr 2015 31 Dec 2014 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 14 Nov 2014 30 Sep 2014 000-12346
8-K Open Document Open Filing FORM 8-K 17 Sep 2014 12 Sep 2014 000-12346
3 Open Document Open Filing FORM 3 17 Sep 2014 15 Sep 2014
4/A Open Document Open Filing PRIMARY DOCUMENT 11 Sep 2014 02 Jan 2014
4/A Open Document Open Filing PRIMARY DOCUMENT 11 Sep 2014 20 Aug 2013
3/A Open Document Open Filing PRIMARY DOCUMENT 11 Sep 2014 01 Jul 2013
4 Open Document Open Filing PRIMARY DOCUMENT 05 Sep 2014 02 Jan 2014
3 Open Document Open Filing PRIMARY DOCUMENT 05 Sep 2014 02 Jan 2014
10-Q Open Document | Data Open Filing FORM 10-Q 14 Aug 2014 30 Jun 2014 000-12346
4 Open Document Open Filing FORM 4 02 Jul 2014 20 Aug 2013
4 Open Document Open Filing FORM 4 02 Jul 2014 02 Jan 2014
3 Open Document Open Filing FORM 3 30 Jun 2014 01 Jul 2013
4/A Open Document Open Filing FORM 4/A 09 Jun 2014 17 Dec 2013
4 Open Document Open Filing FORM 4 09 Jun 2014 20 Aug 2013
10-Q Open Document | Data Open Filing FORM 10-Q 14 May 2014 31 Mar 2014 000-12346
8-K Open Document Open Filing FORM 8-K 13 May 2014 13 May 2014 000-12346
10-K Open Document | Data Open Filing FORM 10-K 15 Apr 2014 31 Dec 2013 000-12346
NT 10-K/A Open Document Open Filing FORM NT 10-K/A 02 Apr 2014 31 Dec 2013 000-12346
NT 10-K Open Document Open Filing FORM NT 10-K 01 Apr 2014 31 Dec 2013 000-12346
UPLOAD Open Document Open Filing 04 Mar 2014
CORRESP Open Document Open Filing 27 Feb 2014
UPLOAD Open Document Open Filing 20 Feb 2014
4 Open Document Open Filing FORM 4 22 Jan 2014 17 Dec 2013
8-K/A Open Document Open Filing FORM 8-K/A 14 Jan 2014 06 Jan 2014 000-12346
UPLOAD Open Document Open Filing 07 Jan 2014
8-K Open Document Open Filing FORM 8-K 07 Jan 2014 02 Jan 2014 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 13 Nov 2013 30 Sep 2013 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 13 Aug 2013 30 Jun 2013 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 09 May 2013 31 Mar 2013 000-12346
10-K Open Document | Data Open Filing FORM 10-K 27 Mar 2013 31 Dec 2012 000-12346
8-K/A Open Document Open Filing FORM 8-K/A-2 14 Dec 2012 14 Dec 2012 000-12346
8-K/A Open Document Open Filing FORM 8-K/A 19 Nov 2012 19 Nov 2012 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 19 Nov 2012 30 Sep 2012 000-12346
NT 10-Q Open Document Open Filing NOTIFICATION OF LATE FILING 13 Nov 2012 30 Sep 2012 000-12346
8-K Open Document Open Filing FORM 8-K 22 Oct 2012 18 Oct 2012 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 14 Aug 2012 30 Jun 2012 000-12346
10-Q Open Document | Data Open Filing FORM 10-Q 21 May 2012 31 Mar 2012 000-12346
NT 10-Q Open Document Open Filing NOTIFICATION OF LATE FILING 16 May 2012 31 Mar 2012 000-12346
8-K Open Document Open Filing CURRENT REPORT 04 Apr 2012 30 Mar 2012 000-12346
4 Open Document Open Filing PRIMARY DOCUMENT 03 Apr 2012 31 Mar 2012
10-K Open Document | Data Open Filing FORM 10-K 28 Mar 2012 31 Dec 2011 000-12346