Birchtech Corp. SEC EDGAR Filings (CIK 0000728385)

SEC EDGAR filings, ownership reports, and insider transactions for Birchtech Corp..

Symbol
BCHT, BCHTD on OTC
Industry
Measuring & Controlling Devices, Nec (Industrial Applications And Services)
Business address
1810 Jester Drive, Corsicana, TX, 75109
State of incorporation
DE
Fiscal year end
31 December
Former names
Midwest Energy Emissions Corp. (to 12 Aug 2024), China Youth Media, Inc. (to 06 Oct 2011), DIGICORP, INC. (to 25 Sep 2008), DIGICORP (to 31 Mar 2008)
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Birchtech Corp. has filed 780 SEC EDGAR filings since 09 Aug 2001

Latest Filings

Recent SEC filings for Birchtech Corp. including S-1, 8-K, 4 and more.

Form type Document Filing Description Filing date Reporting date File number(s)
S-1 Open S-1 document | Open XBRL data View SEC filing for S-1 S-1 13 Jan 2026 333-292701
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 05 Jan 2026 29 Dec 2025 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 29 Dec 2025 23 Dec 2025 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 15 Dec 2025 12 Dec 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 15 Dec 2025 12 Dec 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 15 Dec 2025 11 Dec 2025
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 13 Nov 2025 30 Sep 2025 000-33067
DRS Open DRS document View SEC filing for DRS 23 Oct 2025 377-08605
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Aug 2025 30 Jun 2025 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Jun 2025 20 Jun 2025
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 23 Jun 2025 20 Jun 2025
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 20 Jun 2025 13 Jun 2025 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 15 May 2025 31 Mar 2025 000-33067
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 31 Mar 2025 31 Dec 2024 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 31 Mar 2025 28 Mar 2025 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 04 Mar 2025 04 Mar 2025 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Jan 2025 09 Jan 2025
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 06 Jan 2025 30 Dec 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 06 Jan 2025 30 Dec 2024 000-33067
ARS Open ARS document View SEC filing for ARS ARS 27 Nov 2024 31 Dec 2023 000-33067
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 27 Nov 2024 27 Nov 2024 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 15 Nov 2024 29 Oct 2024 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Nov 2024 30 Sep 2024 000-33067
PRE 14A Open PRE 14A document View SEC filing for PRE 14A PRE 14A 13 Nov 2024 30 Dec 2024 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 21 Oct 2024 08 Oct 2024 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 17 Oct 2024 15 Oct 2024 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 12 Aug 2024 30 Jun 2024 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 01 Aug 2024 30 Jul 2024 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Jun 2024 24 Jun 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 26 Jun 2024 24 Jun 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 13 Jun 2024 07 Jun 2024 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 15 May 2024 31 Mar 2024 000-33067
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 16 Apr 2024 31 Dec 2023 000-33067
NT 10-K Open NT 10-K document View SEC filing for NT 10-K NT 10-K 01 Apr 2024 31 Dec 2023 000-33067
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 13 Mar 2024 005-80249
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 05 Mar 2024 04 Mar 2024 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 04 Mar 2024 27 Feb 2024 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2024 15 Jan 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2024 15 Jan 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2024 15 Jan 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2024 15 Jan 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2024 15 Jan 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2024 15 Jan 2024
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Jan 2024 15 Jan 2024
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 04 Jan 2024 28 Dec 2023 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Dec 2023 11 Dec 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 13 Dec 2023 11 Dec 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 07 Dec 2023 05 Dec 2023 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Dec 2023 30 Nov 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Dec 2023 30 Nov 2023
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 20 Nov 2023 30 Sep 2023 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q NT 10-Q 14 Nov 2023 30 Sep 2023 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 14 Nov 2023 13 Nov 2023 000-33067
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 07 Nov 2023 01 Nov 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 07 Nov 2023 01 Nov 2023 000-33067
ARS Open ARS document View SEC filing for ARS ARS 06 Nov 2023 31 Dec 2022 000-33067
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 03 Nov 2023 03 Nov 2023 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Nov 2023 31 Oct 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Nov 2023 31 Oct 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Nov 2023 31 Oct 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 16 Oct 2023 10 Oct 2023 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Oct 2023 29 Sep 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Oct 2023 29 Sep 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Oct 2023 29 Sep 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 15 Sep 2023 12 Sep 2023 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 14 Sep 2023 11 Sep 2023 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 16 Aug 2023 30 Jun 2023 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q NT 10-Q 14 Aug 2023 30 Jun 2023 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Aug 2023 28 Jul 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Aug 2023 28 Jul 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Aug 2023 28 Jul 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 10 Jul 2023 10 Jul 2023 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 06 Jul 2023 03 Jul 2023 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Jun 2023 28 Jun 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Jun 2023 28 Jun 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 Jun 2023 28 Jun 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Jun 2023 07 Jun 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Jun 2023 05 Jun 2023
10-Q/A Open 10-Q/A document | Open XBRL data View SEC filing for 10-Q/A FORM 10-Q/A 07 Jun 2023 31 Mar 2023 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 06 Jun 2023 31 Mar 2023 000-33067
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 02 Jun 2023 26 May 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 30 May 2023 26 May 2023 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q NT 10-Q 15 May 2023 31 Mar 2023 000-33067
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 15 May 2023 31 Dec 2022 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 20 Apr 2023 17 Apr 2023 000-33067
NT 10-K Open NT 10-K document View SEC filing for NT 10-K NT 10-K 31 Mar 2023 31 Dec 2022 000-33067
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 01 Mar 2023 01 Mar 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 22 Feb 2023 20 Feb 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 15 Feb 2023 10 Feb 2023 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Feb 2023 01 Feb 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Feb 2023 01 Feb 2023
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Feb 2023 01 Feb 2023
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 03 Feb 2023 31 Jan 2023 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 25 Jan 2023 25 Jan 2023 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 18 Jan 2023 18 Jan 2023 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 07 Dec 2022 01 Dec 2022 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 Nov 2022 15 Nov 2022
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Nov 2022 30 Sep 2022 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 10 Nov 2022 08 Nov 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 02 Nov 2022 28 Oct 2022 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Nov 2022 28 Oct 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 30 Sep 2022 28 Sep 2022 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Sep 2022 02 Sep 2022
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 31 Aug 2022 30 Aug 2022 000-33067
RW Open RW document View SEC filing for RW RW 24 Aug 2022 333-260960
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 15 Aug 2022 30 Jun 2022 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 08 Aug 2022 03 Aug 2022 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 06 Jun 2022 31 May 2022 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Jun 2022 31 May 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Jun 2022 31 May 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Jun 2022 31 May 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Jun 2022 31 May 2022
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Jun 2022 31 May 2022
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 18 May 2022 31 Mar 2022 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q NT 10-Q 16 May 2022 31 Mar 2022 000-33067
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 05 Apr 2022 31 Dec 2021 000-33067
NT 10-K Open NT 10-K document View SEC filing for NT 10-K NT 10-K 31 Mar 2022 31 Dec 2021 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 10 Mar 2022 08 Mar 2022 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 25 Feb 2022 24 Feb 2022 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 17 Feb 2022 16 Feb 2022 000-33067
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 07 Feb 2022 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 28 Jan 2022 24 Jan 2022 000-33067
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 24 Jan 2022 24 Jan 2022 000-33067
PRE 14A Open PRE 14A document View SEC filing for PRE 14A PRE 14A 10 Jan 2022 10 Jan 2022 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 26 Nov 2021 22 Nov 2021 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Nov 2021 22 Nov 2021
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Nov 2021 22 Nov 2021
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Nov 2021 22 Nov 2021
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Nov 2021 22 Nov 2021
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Nov 2021 22 Nov 2021
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 24 Nov 2021 22 Nov 2021
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 15 Nov 2021 30 Sep 2021 000-33067
S-1 Open S-1 document | Open XBRL data View SEC filing for S-1 FORM S-1 10 Nov 2021 333-260960
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 05 Nov 2021 19 Oct 2021 000-33067
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 05 Oct 2021 05 Oct 2021 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 16 Aug 2021 30 Jun 2021 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Jul 2021 29 Jun 2021
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 28 Jun 2021 23 Jun 2021 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 09 Jun 2021 03 Jun 2021 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 07 Jun 2021 01 Jun 2021 000-33067
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 21 May 2021 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 18 May 2021 13 May 2021 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 17 May 2021 31 Mar 2021 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 May 2021 01 May 2021
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 30 Apr 2021 03 Jun 2021 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Apr 2021 19 Apr 2021
PRE 14A Open PRE 14A document View SEC filing for PRE 14A PRE 14A 16 Apr 2021 16 Apr 2021 000-33067
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 05 Apr 2021 31 Dec 2020 000-33067
NT 10-K Open NT 10-K document View SEC filing for NT 10-K NT 10-K 31 Mar 2021 31 Dec 2020 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 22 Mar 2021 22 Mar 2021
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 12 Mar 2021 08 Mar 2021 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 10 Mar 2021 10 Mar 2021 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Jan 2021 27 Jan 2021
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 29 Jan 2021 27 Jan 2021
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Dec 2020 14 Dec 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Dec 2020 14 Dec 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Dec 2020 14 Dec 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Dec 2020 14 Dec 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Dec 2020 14 Dec 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 16 Dec 2020 14 Dec 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Dec 2020 30 Nov 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Dec 2020 30 Nov 2020
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 23 Nov 2020 30 Sep 2020 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q NT 10-Q 16 Nov 2020 30 Sep 2020 000-33067
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 30 Oct 2020 21 Oct 2020
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 23 Oct 2020 21 Oct 2020 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 23 Sep 2020 23 Sep 2020 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 19 Aug 2020 30 Jun 2020 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q NT 10-Q 14 Aug 2020 30 Jun 2020 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 06 Aug 2020 04 Aug 2020 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 14 Jul 2020 08 Jul 2020 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jul 2020 08 Jul 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jul 2020 08 Jul 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jul 2020 08 Jul 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jul 2020 08 Jul 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jul 2020 08 Jul 2020
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 06 Jul 2020 31 Mar 2020 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q NT 10-Q 29 Jun 2020 31 Mar 2020 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 09 Jun 2020 03 Jun 2020 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 15 May 2020 15 May 2020 000-33067
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 14 May 2020 31 Dec 2019 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 14 Apr 2020 13 Apr 2020 000-33067
NT 10-K Open NT 10-K document View SEC filing for NT 10-K NT 10-K 30 Mar 2020 31 Dec 2019 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 19 Nov 2019 15 Nov 2019 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Nov 2019 30 Sep 2019 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 24 Oct 2019 23 Oct 2019 000-33067
D/A Open D/A document View SEC filing for D/A 21 Aug 2019 021-343104
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Aug 2019 30 Jun 2019 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 25 Jul 2019 25 Jul 2019 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Jul 2019 28 Jun 2019
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Jul 2019 28 Jun 2019
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Jul 2019 28 Jun 2019
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Jul 2019 28 Jun 2019
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Jul 2019 28 Jun 2019
D Open D document View SEC filing for D 28 Jun 2019 021-343104
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 27 Jun 2019 27 Jun 2019 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 19 Jun 2019 18 Jun 2019 000-33067
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 12 Jun 2019 05 Jun 2019
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 07 Jun 2019 04 Jun 2019 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 06 Jun 2019 04 Jun 2019
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 15 May 2019 31 Mar 2019 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 15 May 2019 14 May 2019 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 15 May 2019 14 May 2019
10-K/A Open 10-K/A document View SEC filing for 10-K/A FORM 10-K/A 30 Apr 2019 31 Dec 2018 000-33067
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 11 Apr 2019 31 Dec 2018 000-33067
NT 10-K Open NT 10-K document View SEC filing for NT 10-K NT 10-K 01 Apr 2019 31 Dec 2018 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 01 Mar 2019 25 Feb 2019 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jan 2019 31 Dec 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jan 2019 31 Dec 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jan 2019 31 Dec 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jan 2019 31 Dec 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jan 2019 31 Dec 2018
8-K Open 8-K document View SEC filing for 8-K FROM 8-K 21 Dec 2018 17 Dec 2018 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Dec 2018 30 Nov 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Dec 2018 30 Nov 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Dec 2018 30 Nov 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Dec 2018 30 Nov 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 04 Dec 2018 30 Nov 2018
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 13 Nov 2018 30 Sep 2018 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Nov 2018 31 Oct 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Nov 2018 31 Oct 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Nov 2018 31 Oct 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Nov 2018 31 Oct 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Nov 2018 31 Oct 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Nov 2018 31 Oct 2018
3 Open 3 document View SEC filing for 3 PRIMARY DOCUMENT 15 Oct 2018 08 Oct 2018
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 12 Oct 2018 08 Oct 2018 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Oct 2018 30 Sep 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Oct 2018 30 Sep 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Oct 2018 30 Sep 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Oct 2018 30 Sep 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Oct 2018 30 Sep 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 01 Oct 2018 30 Sep 2018
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 18 Sep 2018 12 Sep 2018 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2018 31 Aug 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2018 31 Aug 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2018 31 Aug 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2018 31 Aug 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2018 31 Aug 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 05 Sep 2018 31 Aug 2018
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Aug 2018 30 Jun 2018 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Aug 2018 31 Jul 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Aug 2018 31 Jul 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Aug 2018 31 Jul 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Aug 2018 31 Jul 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Aug 2018 31 Jul 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Aug 2018 31 Jul 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jul 2018 06 Jul 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jul 2018 06 Jul 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jul 2018 06 Jul 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jul 2018 30 Jun 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jul 2018 30 Jun 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jul 2018 30 Jun 2018
D Open D document View SEC filing for D 28 Jun 2018 021-315713
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 20 Jun 2018 14 Jun 2018 000-33067
4/A Open 4/A document View SEC filing for 4/A PRIMARY DOCUMENT 12 Jun 2018 08 Jun 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Jun 2018 08 Jun 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Jun 2018 08 Jun 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Jun 2018 08 Jun 2018
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 21 May 2018 31 Mar 2018 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q NT 10-Q 14 May 2018 31 Mar 2018 000-33067
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 30 Apr 2018 30 Apr 2018 000-33067
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 17 Apr 2018 31 Dec 2017 000-33067
NT 10-K Open NT 10-K document View SEC filing for NT 10-K NT 10-K 02 Apr 2018 31 Dec 2017 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Feb 2018 23 Feb 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Feb 2018 23 Feb 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 27 Feb 2018 23 Feb 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Feb 2018 05 Feb 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Feb 2018 05 Feb 2018
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Feb 2018 05 Feb 2018
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 20 Nov 2017 30 Sep 2017 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q NT 10-Q 14 Nov 2017 30 Sep 2017 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 14 Sep 2017 11 Sep 2017 000-33067
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10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 15 May 2015 31 Mar 2015 000-33067
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 24 Apr 2015 23 Apr 2015 000-33067
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10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 20 Mar 2015 31 Dec 2014 000-33067
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 26 Feb 2015 20 Feb 2015 000-33067
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 05 Dec 2014 01 Dec 2014 000-33067
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 01 Dec 2014 24 Nov 2014 000-33067
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 21 Nov 2014 18 Nov 2014 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 20 Nov 2014 16 Nov 2014 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Nov 2014 30 Sep 2014 000-33067
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ARS Open ARS document View SEC filing for ARS AUTO-GENERATED PAPER DOCUMENT 27 Oct 2014 31 Dec 2013 000-33067
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10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Aug 2014 30 Jun 2014 000-33067
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D/A Open D/A document View SEC filing for D/A 16 May 2014 021-216685
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 15 May 2014 31 Mar 2014 000-33067
D Open D document View SEC filing for D 05 May 2014 021-216814
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10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 14 Mar 2014 31 Dec 2013 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 05 Feb 2014 30 Jan 2014 000-33067
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SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 21 Jan 2014 005-80249
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4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 02 Jan 2014 01 Jan 2014
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 20 Dec 2013 18 Dec 2013 000-33067
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 18 Dec 2013 12 Dec 2013 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 12 Nov 2013 30 Sep 2013 000-33067
D/A Open D/A document View SEC filing for D/A 13 Sep 2013 021-201196
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 Aug 2013 30 Jun 2013 000-33067
D Open D document View SEC filing for D 12 Aug 2013 021-201196
4/A Open 4/A document View SEC filing for 4/A PRIMARY DOCUMENT 19 Jul 2013 19 Mar 2013
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 03 Jul 2013 27 Jun 2013 000-33067
8-K/A Open 8-K/A document View SEC filing for 8-K/A 8-K/A 27 Jun 2013 18 Jun 2013 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 21 Jun 2013 18 Jun 2013 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 05 Jun 2013 01 Jun 2013 000-33067
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10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 14 May 2013 31 Mar 2013 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 07 May 2013 01 May 2013 000-33067
D Open D document View SEC filing for D 09 Apr 2013 021-194692
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 09 Apr 2013 005-80249
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4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Mar 2013 19 Mar 2013
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 13 Mar 2013 31 Dec 2012 000-33067
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 01 Feb 2013 005-80249
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 03 Jan 2013 31 Dec 2012
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10-K/A Open 10-K/A document | Open XBRL data View SEC filing for 10-K/A FORM 10-K/A 21 Dec 2012 31 Dec 2011 000-33067
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 14 Dec 2012
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 13 Nov 2012 30 Sep 2012 000-33067
10-Q/A Open 10-Q/A document | Open XBRL data View SEC filing for 10-Q/A 07 Sep 2012 30 Sep 2011 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 10 Aug 2012 30 Jun 2012 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jul 2012 21 Jun 2011
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 09 Jul 2012 05 Jul 2012
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10-Q/A Open 10-Q/A document | Open XBRL data View SEC filing for 10-Q/A 02 Jul 2012 30 Sep 2011 000-33067
10-Q/A Open 10-Q/A document | Open XBRL data View SEC filing for 10-Q/A 02 Jul 2012 30 Jun 2011 000-33067
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 11 May 2012 31 Mar 2012 000-33067
D Open D document View SEC filing for D 02 May 2012 021-177557
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 12 Apr 2012 31 Dec 2011 000-33067
NT 10-K Open NT 10-K document View SEC filing for NT 10-K FORM NT 10-K 29 Mar 2012 31 Dec 2011 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 27 Mar 2012 21 Mar 2012 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 28 Feb 2012 23 Feb 2012 000-33067
SC 13G Open SC 13G document View SEC filing for SC 13G SC 13G 24 Feb 2012 005-80249
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 21 Feb 2012 16 Feb 2012
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 17 Feb 2012 16 Feb 2012 000-33067
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CORRESP Open CORRESP document View SEC filing for CORRESP 20 Jan 2012
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 13 Jan 2012 09 Jan 2012 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 12 Jan 2012 10 Jan 2012
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 10 Jan 2012 10 Jan 2012 000-33067
D Open D document View SEC filing for D 05 Jan 2012 021-171274
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10-Q/A Open 10-Q/A document | Open XBRL data View SEC filing for 10-Q/A FORM 10-Q/A 23 Dec 2011 30 Jun 2011 000-33067
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10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 21 Nov 2011 30 Sep 2011 000-33067
CORRESP Open CORRESP document View SEC filing for CORRESP 18 Nov 2011
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 07 Nov 2011 01 Nov 2011 000-33067
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D Open D document View SEC filing for D 06 Oct 2011 021-166870
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10-Q/A Open 10-Q/A document | Open XBRL data View SEC filing for 10-Q/A FORM 10-Q/A 05 Oct 2011 30 Jun 2011 000-33067
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 19 Sep 2011 13 Sep 2011 000-33067
DEF 14C Open DEF 14C document View SEC filing for DEF 14C DEF 14C 15 Sep 2011 13 Sep 2011 000-33067
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10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q FORM 10-Q 22 Aug 2011 30 Jun 2011 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q FORM NT 10-Q 15 Aug 2011 30 Jun 2011 000-33067
8-K/A Open 8-K/A document View SEC filing for 8-K/A FORM 8-K/A 10 Aug 2011 21 Jun 2011 000-33067
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8-K Open 8-K document View SEC filing for 8-K FORM 8-K 27 Jun 2011 21 Jun 2011 000-33067
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10-Q Open 10-Q document View SEC filing for 10-Q FORM 10-Q 23 May 2011 31 Mar 2011 000-33067
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10-K Open 10-K document View SEC filing for 10-K FORM 10-K 19 Apr 2011 31 Dec 2010 000-33067
8-K Open 8-K document View SEC filing for 8-K FORM 8-K 19 Apr 2011 15 Apr 2011 000-33067
NT 10-K Open NT 10-K document View SEC filing for NT 10-K FORM NT10-K 31 Mar 2011 31 Dec 2010 000-33067
8-K Open 8-K document View SEC filing for 8-K 15 Dec 2010 19 Nov 2010 000-33067
10-Q Open 10-Q document View SEC filing for 10-Q 22 Nov 2010 30 Sep 2010 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q 15 Nov 2010 30 Sep 2010 000-33067
10-Q Open 10-Q document View SEC filing for 10-Q CHINA YOUTH MEDIA, INC. FORM 10-Q 23 Aug 2010 30 Jun 2010 000-33067
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SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A DENNIS L. PELINO / CHINA YOUTH MEDIA, INC. 07 Jul 2010 005-80249
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 07 Jul 2010 15 Oct 2009
10-Q Open 10-Q document View SEC filing for 10-Q CHINA YOUTH MEDIA, INC FORM 10-Q 21 May 2010 31 Mar 2010 000-33067
NT 10-Q Open NT 10-Q document View SEC filing for NT 10-Q 17 May 2010 31 Mar 2010 000-33067
10-K Open 10-K document View SEC filing for 10-K FORM 10-K 15 Apr 2010 31 Dec 2009 000-33067
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Apr 2010 22 Oct 2009
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 14 Apr 2010 22 Oct 2009
NT 10-K Open NT 10-K document View SEC filing for NT 10-K NT 10-K 31 Mar 2010 31 Dec 2009 000-33067

About this filer

Birchtech Corp. files with the SEC under CIK 0000728385. This page aggregates EDGAR filings and related ownership activity.

Industry: Measuring & Controlling Devices, Nec.

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.
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Updates follow new EDGAR submissions and periodic data refreshes.

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