RIDGEFIELD ACQUISITION CORP SEC EDGAR Filings (CIK 0000812152)

SEC EDGAR filings, ownership reports, and insider transactions for RIDGEFIELD ACQUISITION CORP.

Symbol
RDGA on OTC
Industry
Blank Checks (Office Of Real Estate & Construction)
Business address
3827 S Carson St, Unit 505 25 Pmb 1078, Carson City, NV, 89701
State of incorporation
CO
Fiscal year end
31 December
Former names
BIO MEDICAL AUTOMATION INC (to 22 Nov 2002), OZO DIVERSIFIED AUTOMATION INC /CO/ (to 22 Mar 1999)
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RIDGEFIELD ACQUISITION CORP has filed 237 SEC EDGAR filings since 13 Nov 1995

Latest Filings

Recent SEC filings for RIDGEFIELD ACQUISITION CORP including SC 13E3/A, DEF 14C, 10-Q and more.

Form type Document Filing Description Filing date Reporting date File number(s)
SC 13E3/A Open SC 13E3/A document View SEC filing for SC 13E3/A SC 13E3/A 12 Dec 2025 005-39963
DEF 14C Open DEF 14C document View SEC filing for DEF 14C DEF 14C 12 Dec 2025 16 Dec 2025 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 07 Nov 2025 30 Sep 2025 000-16335
PRER14C Open PRER14C document View SEC filing for PRER14C PRER14C 20 Oct 2025 000-16335
SC 13E3 Open SC 13E3 document | Open XBRL data View SEC filing for SC 13E3 SC 13E3 20 Oct 2025 005-39963
PRE 14C Open PRE 14C document View SEC filing for PRE 14C PRE 14C 17 Sep 2025 17 Sep 2025 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 08 Aug 2025 30 Jun 2025 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 09 May 2025 31 Mar 2025 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 14 Mar 2025 31 Dec 2024 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 08 Nov 2024 30 Sep 2024 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 08 Aug 2024 30 Jun 2024 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 13 May 2024 31 Mar 2024 000-16335
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SC 13D/A 29 Apr 2024 005-39963
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 25 Apr 2024 23 Apr 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 25 Apr 2024 23 Apr 2024 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 12 Mar 2024 31 Dec 2023 000-16335
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 04 Dec 2023 04 Dec 2023 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 13 Nov 2023 30 Sep 2023 000-16335
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SC 13D/A 17 Oct 2023 005-39963
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 13 Oct 2023 11 Oct 2023
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 11 Aug 2023 30 Jun 2023 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 11 May 2023 31 Mar 2023 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 28 Feb 2023 31 Dec 2022 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 04 Nov 2022 30 Sep 2022 000-16335
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 31 Oct 2022 27 Sep 2022 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 28 Jul 2022 30 Jun 2022 000-16335
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SC 13D/A 01 Jul 2022 005-39963
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 10 May 2022 31 Mar 2022 000-16335
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 28 Mar 2022 23 Mar 2022 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 11 Mar 2022 31 Dec 2021 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 28 Oct 2021 30 Sep 2021 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 12 Aug 2021 30 Jun 2021 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 06 May 2021 31 Mar 2021 000-16335
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 30 Mar 2021 26 Mar 2021
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 29 Mar 2021 26 Mar 2021 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 04 Mar 2021 31 Dec 2020 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 29 Oct 2020 30 Sep 2020 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 04 Aug 2020 30 Jun 2020 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 12 May 2020 31 Mar 2020 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 25 Feb 2020 31 Dec 2019 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 31 Oct 2019 30 Sep 2019 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 01 Aug 2019 30 Jun 2019 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 09 May 2019 31 Mar 2019 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 28 Mar 2019 31 Dec 2018 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 30 Oct 2018 30 Sep 2018 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 31 Jul 2018 30 Jun 2018 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 10 May 2018 31 Mar 2018 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 30 Mar 2018 31 Dec 2017 000-16335
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 07 Mar 2018 27 Feb 2018 000-16335
15-12G/A Open 15-12G/A document View SEC filing for 15-12G/A 15-12G/A 15 Feb 2018 000-16335
15-12G Open 15-12G document View SEC filing for 15-12G 15-12G 10 Jan 2018 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 13 Nov 2017 30 Sep 2017 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Aug 2017 30 Jun 2017 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 12 May 2017 31 Mar 2017 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 31 Mar 2017 31 Dec 2016 000-16335
10-Q/A Open 10-Q/A document | Open XBRL data View SEC filing for 10-Q/A 10-Q/A 17 Nov 2016 30 Sep 2016 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 03 Nov 2016 30 Sep 2016 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 19 Aug 2016 30 Jun 2016 000-16335
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q NOTIFICATION OF LATE FILING 16 Aug 2016 30 Jun 2016 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 13 May 2016 31 Mar 2016 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 30 Mar 2016 31 Dec 2015 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 13 Nov 2015 30 Sep 2015 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 13 Aug 2015 30 Jun 2015 000-16335
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 02 Jul 2015 01 Jul 2015 000-16335
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 23 Jun 2015 18 Jun 2015 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 12 May 2015 31 Mar 2015 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 14 Apr 2015 31 Dec 2014 000-16335
NT 10-K Open NT 10-K document View SEC filing for NT 10-K NT 10-K 31 Mar 2015 31 Dec 2014 000-16335
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 05 Mar 2015 01 Mar 2015 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Nov 2014 30 Sep 2014 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 13 Aug 2014 30 Jun 2014 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 13 May 2014 31 Mar 2014 000-16335
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 02 May 2014 01 May 2014 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 28 Mar 2014 31 Dec 2013 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 13 Nov 2013 30 Sep 2013 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 12 Aug 2013 30 Jun 2013 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 10 May 2013 31 Mar 2013 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 27 Mar 2013 31 Dec 2012 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Nov 2012 30 Sep 2012 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 09 Aug 2012 30 Jun 2012 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 15 May 2012 31 Mar 2012 000-16335
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 28 Mar 2012 31 Dec 2011 000-16335
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Nov 2011 30 Sep 2011 000-16335
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 10 Nov 2011
10-Q/A Open 10-Q/A document | Open XBRL data View SEC filing for 10-Q/A FORM 10-Q/A 14 Sep 2011 30 Jun 2011 000-16335
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 29 Aug 2011
10-Q Open 10-Q document View SEC filing for 10-Q FORM 10-Q 10 Aug 2011 30 Jun 2011 000-16335
8-K/A Open 8-K/A document View SEC filing for 8-K/A FORM 8-K 25 Jul 2011 05 Jul 2011 000-16335
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 08 Jul 2011 05 Jul 2011 000-16335
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Jul 2011 30 Jun 2011
10-Q Open 10-Q document View SEC filing for 10-Q FORM 10-Q 16 May 2011 31 Mar 2011 000-16335
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 15 Apr 2011 13 Apr 2011 000-16335
10-K Open 10-K document View SEC filing for 10-K FORM 10-K 31 Mar 2011 31 Dec 2010 000-16335
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 01 Feb 2011 31 Jan 2011 000-16335
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A SCHEDULE 13D/A 03 Dec 2010 005-39963
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Dec 2010 01 Dec 2010
10-Q Open 10-Q document View SEC filing for 10-Q FORM 10-Q 15 Nov 2010 30 Sep 2010 000-16335
10-Q Open 10-Q document View SEC filing for 10-Q FORM 10-Q 12 Aug 2010 30 Jun 2010 000-16335
10-Q Open 10-Q document View SEC filing for 10-Q RIDGEFIELD ACQUISITION CORP. FORM 10-Q 13 May 2010 31 Mar 2010 000-16335
10-K Open 10-K document View SEC filing for 10-K RIDGEFIELD ACQUISITION CORP. FORM 10-K 30 Mar 2010 31 Dec 2009 000-16335
8-K Open 8-K document View SEC filing for 8-K RIDGEFIELD ACQUISITION CORP. FORM 8-K 03 Mar 2010 01 Mar 2010 000-16335

About this filer

RIDGEFIELD ACQUISITION CORP files with the SEC under CIK 0000812152. This page aggregates EDGAR filings and related ownership activity.

Industry: Blank Checks.

See insider transactions for this issuer.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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