Birchtech Corp. (BCHT) SEC Filings https://ir.birchtech.com/public-filings/all-sec-filings/rss Birchtech Corp. (BCHT) - All SEC Filings en-us https://d1io3yog0oux5.cloudfront.net/_37d2b45c44e3c7bec0de500a7ac688ab/birchtech/files/theme/images/logo600.png Birchtech Corp. Logo Equisolve Investor Relations Suite <![CDATA[8-K - Current report]]> https://ir.birchtech.com/public-filings/all-sec-filings/content/0001477932-26-002165/0001477932-26-002165.pdf Mon, 13 Apr 26 00:00:00 -0400 https://ir.birchtech.com/public-filings/all-sec-filings/content/0001477932-26-002165/0001477932-26-002165.pdf <![CDATA[10-K - Annual report [Section 13 and 15(d), not S-K Item 405]]]> https://ir.birchtech.com/public-filings/all-sec-filings/content/0001477932-26-001835/0001477932-26-001835.pdf Tue, 31 Mar 26 00:00:00 -0400 https://ir.birchtech.com/public-filings/all-sec-filings/content/0001477932-26-001835/0001477932-26-001835.pdf <![CDATA[8-K - Current report]]> https://ir.birchtech.com/public-filings/all-sec-filings/content/0001104659-26-029450/0001104659-26-029450.pdf Tue, 17 Mar 26 00:00:00 -0400 https://ir.birchtech.com/public-filings/all-sec-filings/content/0001104659-26-029450/0001104659-26-029450.pdf <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://ir.birchtech.com/public-filings/all-sec-filings/content/0001358094-26-000001/0001358094-26-000001.pdf Mon, 02 Mar 26 00:00:00 -0500 https://ir.birchtech.com/public-filings/all-sec-filings/content/0001358094-26-000001/0001358094-26-000001.pdf <![CDATA[8-K - Current report]]> https://ir.birchtech.com/public-filings/all-sec-filings/content/0001104659-26-021534/0001104659-26-021534.pdf Fri, 27 Feb 26 00:00:00 -0500 https://ir.birchtech.com/public-filings/all-sec-filings/content/0001104659-26-021534/0001104659-26-021534.pdf <![CDATA[424B4 - Prospectus [Rule 424(b)(4)]]]> https://ir.birchtech.com/public-filings/all-sec-filings/content/0001104659-26-021168/0001104659-26-021168.pdf Fri, 27 Feb 26 00:00:00 -0500 https://ir.birchtech.com/public-filings/all-sec-filings/content/0001104659-26-021168/0001104659-26-021168.pdf <![CDATA[CERT - Certification by an exchange approving securities for listing]]> https://ir.birchtech.com/public-filings/all-sec-filings/content/0001143313-26-000011/0001143313-26-000011.pdf Wed, 25 Feb 26 00:00:00 -0500 https://ir.birchtech.com/public-filings/all-sec-filings/content/0001143313-26-000011/0001143313-26-000011.pdf <![CDATA[EFFECT - Notice of Effectiveness]]> https://ir.birchtech.com/public-filings/all-sec-filings/content/9999999995-26-000607/9999999995-26-000607.pdf Tue, 17 Feb 26 00:00:00 -0500 https://ir.birchtech.com/public-filings/all-sec-filings/content/9999999995-26-000607/9999999995-26-000607.pdf <![CDATA[CORRESP - Correspondence]]> https://ir.birchtech.com/public-filings/all-sec-filings/content/0001104659-26-014433/0001104659-26-014433.pdf Thu, 12 Feb 26 00:00:00 -0500 https://ir.birchtech.com/public-filings/all-sec-filings/content/0001104659-26-014433/0001104659-26-014433.pdf <![CDATA[CORRESP - Correspondence]]> https://ir.birchtech.com/public-filings/all-sec-filings/content/0001104659-26-014431/0001104659-26-014431.pdf Thu, 12 Feb 26 00:00:00 -0500 https://ir.birchtech.com/public-filings/all-sec-filings/content/0001104659-26-014431/0001104659-26-014431.pdf