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Birchtech Corp. — All Filings

789 total filings on record

Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-Q 10-Q/A 10KSB 10KSB/A 10QSB 10SB12G 3 3/A 4 4/A 424B3 424B4 5 8-A12B 8-K 8-K/A ARS CERT CORRESP D D/A DEF 14A DEF 14C DEFA14A DRS EFFECT NT 10-K NT 10-Q PRE 14A PRE 14C REGDEX RW S-1 S-1/A SC 13D SC 13D/A SC 13G SC 13G/A SC 14F1 UPLOAD
Form Description Accession Number Filed Period
8-K FORM 8-K 0001477932-21-003382 May 18, 2021 May 13, 2021
10-Q FORM 10-Q 0001477932-21-003344 May 17, 2021 Mar 31, 2021
4 PRIMARY DOCUMENT 0000945836-21-000005 May 7, 2021 May 1, 2021
DEF 14A DEF 14A 0001477932-21-002797 Apr 30, 2021 Jun 3, 2021
4 PRIMARY DOCUMENT 0000945836-21-000004 Apr 21, 2021 Apr 19, 2021
PRE 14A PRE 14A 0001477932-21-002437 Apr 16, 2021 —
10-K FORM 10-K 0001477932-21-002039 Apr 5, 2021 Dec 31, 2020
NT 10-K NT 10-K 0001477932-21-001911 Mar 31, 2021 Dec 31, 2020
4 PRIMARY DOCUMENT 0000945836-21-000003 Mar 22, 2021 —
8-K FORM 8-K 0001477932-21-001403 Mar 12, 2021 Mar 8, 2021
8-K FORM 8-K 0001477932-21-001347 Mar 10, 2021 —
4 PRIMARY DOCUMENT 0000945836-21-000002 Jan 29, 2021 Jan 27, 2021
4 PRIMARY DOCUMENT 0000945836-21-000001 Jan 29, 2021 Jan 27, 2021
4 PRIMARY DOCUMENT 0000945836-20-000009 Dec 16, 2020 Dec 14, 2020
4 PRIMARY DOCUMENT 0000945836-20-000010 Dec 16, 2020 Dec 14, 2020
4 PRIMARY DOCUMENT 0000945836-20-000011 Dec 16, 2020 Dec 14, 2020
4 PRIMARY DOCUMENT 0000945836-20-000012 Dec 16, 2020 Dec 14, 2020
4 PRIMARY DOCUMENT 0000945836-20-000013 Dec 16, 2020 Dec 14, 2020
4 PRIMARY DOCUMENT 0000945836-20-000014 Dec 16, 2020 Dec 14, 2020
4 PRIMARY DOCUMENT 0000945836-20-000008 Dec 1, 2020 Nov 30, 2020
4 PRIMARY DOCUMENT 0000945836-20-000007 Dec 1, 2020 Nov 30, 2020
10-Q FORM 10-Q 0001477932-20-006882 Nov 23, 2020 Sep 30, 2020
NT 10-Q NT 10-Q 0001477932-20-006663 Nov 16, 2020 Sep 30, 2020
3 PRIMARY DOCUMENT 0000945836-20-000006 Oct 30, 2020 Oct 21, 2020
8-K FORM 8-K 0001477932-20-006043 Oct 23, 2020 Oct 21, 2020
8-K FORM 8-K 0001477932-20-005566 Sep 23, 2020 —
10-Q FORM 10-Q 0001477932-20-005080 Aug 19, 2020 Jun 30, 2020
NT 10-Q NT 10-Q 0001477932-20-004920 Aug 14, 2020 Jun 30, 2020
8-K FORM 8-K 0001477932-20-004577 Aug 6, 2020 Aug 4, 2020
8-K FORM 8-K 0001477932-20-003970 Jul 14, 2020 Jul 8, 2020
4 PRIMARY DOCUMENT 0000945836-20-000001 Jul 9, 2020 Jul 8, 2020
4 PRIMARY DOCUMENT 0000945836-20-000002 Jul 9, 2020 Jul 8, 2020
4 PRIMARY DOCUMENT 0000945836-20-000003 Jul 9, 2020 Jul 8, 2020
4 PRIMARY DOCUMENT 0000945836-20-000004 Jul 9, 2020 Jul 8, 2020
4 PRIMARY DOCUMENT 0000945836-20-000005 Jul 9, 2020 Jul 8, 2020
10-Q FORM 10-Q 0001477932-20-003741 Jul 6, 2020 Mar 31, 2020
NT 10-Q NT 10-Q 0001477932-20-003640 Jun 29, 2020 Mar 31, 2020
8-K FORM 8-K 0001477932-20-003266 Jun 9, 2020 Jun 3, 2020
8-K FORM 8-K 0001477932-20-002791 May 15, 2020 —
10-K FORM 10-K 0001477932-20-002679 May 14, 2020 Dec 31, 2019
8-K FORM 8-K 0001477932-20-001960 Apr 14, 2020 Apr 13, 2020
NT 10-K NT 10-K 0001477932-20-001687 Mar 30, 2020 Dec 31, 2019
8-K FORM 8-K 0001477932-19-006721 Nov 19, 2019 Nov 15, 2019
10-Q FORM 10-Q 0001477932-19-006565 Nov 14, 2019 Sep 30, 2019
8-K FORM 8-K 0001477932-19-006011 Oct 24, 2019 Oct 23, 2019
D/A — 0000945836-19-000018 Aug 21, 2019 —
10-Q FORM 10-Q 0001477932-19-004811 Aug 14, 2019 Jun 30, 2019
8-K FORM 8-K 0001477932-19-004316 Jul 25, 2019 —
4 PRIMARY DOCUMENT 0000945836-19-000017 Jul 1, 2019 Jun 28, 2019
4 PRIMARY DOCUMENT 0000945836-19-000016 Jul 1, 2019 Jun 28, 2019