Birchtech BCHT SEC Filings

NYSE BCHT
$1.11 -0.04 (-3.48%)
At close: Nov 10, 2026 · 4:00 PM EST
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Birchtech Corp. (BCHT) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
1SCHEDULE 13GBeneficial Ownership Report0000935836-26-000520Oct 5, 2026 3:48 AM
210-QQuarterly & Annual Report0001477932-26-004988Aug 13, 2026 8:16 PM
38-KCurrent Report0001477932-26-004563Jul 28, 2026 8:30 PM
4ARSOthers0001477932-26-003964Jun 24, 2026 11:31 AM
5DEF 14AOthers0001477932-26-003963Jun 24, 2026 11:30 AM
6PRE 14AOthers0001477932-26-003688Jun 8, 2026 8:15 PM
710-QQuarterly & Annual Report0001477932-26-003054May 13, 2026 8:16 PM
88-KCurrent Report0001477932-26-002995May 12, 2026 8:16 PM
93Insider Transaction0000945836-26-000003May 6, 2026 9:47 PM
108-KCurrent Report0001477932-26-002802May 6, 2026 8:15 PM
118-KCurrent Report0001477932-26-002165Apr 13, 2026 8:15 PM
1210-KQuarterly & Annual Report0001477932-26-001835Mar 31, 2026 8:15 PM
138-KCurrent Report0001104659-26-029450Mar 17, 2026 8:05 PM
144Insider Transaction0001358094-26-000001Mar 2, 2026 1:39 PM
158-KCurrent Report0001104659-26-021534Feb 27, 2026 9:01 PM
16424B4Prospectus0001104659-26-021168Feb 27, 2026 3:11 PM
17CERTOthers0001143313-26-000011Feb 25, 2026 10:14 PM
18EFFECTOthers9999999995-26-000607Feb 17, 2026 5:15 AM
19CORRESPOthers0001104659-26-014433Feb 12, 2026 10:27 PM
20CORRESPOthers0001104659-26-014431Feb 12, 2026 10:25 PM
21CORRESPOthers0001104659-26-014430Feb 12, 2026 10:24 PM
22CORRESPOthers0001104659-26-014428Feb 12, 2026 10:22 PM
23S-1Prospectus0001104659-26-014131Feb 12, 2026 6:27 PM
248-A12BOthers0001104659-26-013041Feb 11, 2026 1:00 PM
25CORRESPOthers0001104659-26-012055Feb 9, 2026 9:00 PM
26CORRESPOthers0001104659-26-012054Feb 9, 2026 9:00 PM
27S-1Prospectus0001104659-26-009808Feb 3, 2026 10:11 PM
28S-1Prospectus0001104659-26-003397Jan 13, 2026 9:57 PM
298-KCurrent Report0001477932-26-000031Jan 5, 2026 9:37 PM
308-KCurrent Report0001477932-25-009214Dec 29, 2025 9:30 PM
314Insider Transaction0001358094-25-000008Dec 15, 2025 2:32 AM
324Insider Transaction0001358094-25-000007Dec 15, 2025 2:23 AM
334Insider Transaction0001358094-25-000006Dec 15, 2025 1:49 AM
3410-QQuarterly & Annual Report0001477932-25-008185Nov 13, 2025 9:16 PM
35DRSOthers0001104659-25-101822Oct 23, 2025 8:07 PM
3610-QQuarterly & Annual Report0001477932-25-005905Aug 14, 2025 8:17 PM
374Insider Transaction0000945836-25-000004Jun 23, 2025 10:00 PM
384Insider Transaction0000945836-25-000003Jun 23, 2025 9:53 PM
398-KCurrent Report0001477932-25-004727Jun 20, 2025 8:30 PM
4010-QQuarterly & Annual Report0001477932-25-003808May 15, 2025 8:15 PM
4110-KQuarterly & Annual Report0001477932-25-002237Mar 31, 2025 8:25 PM
428-KCurrent Report0001477932-25-002233Mar 31, 2025 8:20 PM
438-KCurrent Report0001477932-25-001435Mar 4, 2025 5:07 PM
444Insider Transaction0000945836-25-000002Jan 13, 2025 10:33 PM
453Insider Transaction0000945836-25-000001Jan 6, 2025 4:38 PM
468-KCurrent Report0001477932-25-000056Jan 6, 2025 2:51 PM
47ARSOthers0001477932-24-007663Nov 27, 2024 11:02 AM
48DEF 14AOthers0001477932-24-007662Nov 27, 2024 11:00 AM
498-KCurrent Report0001477932-24-007251Nov 15, 2024 1:00 PM
5010-QQuarterly & Annual Report0001477932-24-007130Nov 14, 2024 11:03 AM
...

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