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Birchtech Corp.
BCHT · SEC Filings
website
15
Birchtech Corp. operates as an environmental technology and services company, specializing in crafti...
Price
1.14
Market Cap
29.99 M
Float
22.73 M
Country
US
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Industrials
Exchange
AMEX
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TYPE
HEADLINE
FILED AT
TYPE
HEADLINE
FILED AT
TYPE
HEADLINE
FILED AT
TYPE
HEADLINE
FILED AT
All
Chronological
Financials
Registrations
Prospectus
News
Proxies
Ownerships
Other
Birchtech Corp.
BCHT · SEC Filings
22.73 M
Float
1.14
Price
29.99 M
Market Cap
Financials
TYPE
HEADLINE
FILED AT
10-Q
Form 10-Q - Quarterly report [Sections 13 or 15(d)]
Aug 13, 2026
10-Q
Form 10-Q - Quarterly report [Sections 13 or 15(d)]
May 13, 2026
10-K
Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]
Mar 31, 2026
10-Q
Form 10-Q - Quarterly report [Sections 13 or 15(d)]
Nov 13, 2025
10-Q
Form 10-Q - Quarterly report [Sections 13 or 15(d)]
Aug 14, 2025
10-Q
Form 10-Q - Quarterly report [Sections 13 or 15(d)]
May 15, 2025
News
TYPE
HEADLINE
FILED AT
8-K
Birchtech Corp. Announces Results of 2026 Annual Meeting and Reduction of Authorized Common Stock
Jul 28, 2026
8-K/A
CFO Appointment Finalized with Oyster HR Inc., Annual Salary Set at $425,000 CAD, Plus Discretionary Bonuses
May 12, 2026
8-K
Birchtech Corp. Appoints Michael Mioska as Chief Financial Officer
May 6, 2026
8-K
Birchtech Corp. Announces Date for 2026 Annual Meeting of Stockholders
Apr 13, 2026
8-K
Birchtech Corp. Announces Partial Exercise of Over-Allotment Option
Mar 17, 2026
8-K
Birchtech Prices $15 Million Public Offering and Uplists to NYSE American
Feb 27, 2026
Prospectus
TYPE
HEADLINE
FILED AT
424B4
UPLIST | Offering amount: $15,000,000 | Shares: 6,250,000 | Price: $2.400 | Bank: Lake Street Capital Markets; Huntington Capital Markets
Feb 27, 2026
424B3
Form 424B3 - Prospectus [Rule 424(b)(3)]
Jan 11, 2017
Registrations
TYPE
HEADLINE
FILED AT
S-1/A
Form S-1/A - General form for registration of securities under the Securities Act of 1933: [Amend]
Feb 12, 2026
8-A12B
Form 8-A12B - Registration of securities [Section 12(b)]
Feb 11, 2026
S-1/A
Form S-1/A - General form for registration of securities under the Securities Act of 1933: [Amend]
Feb 3, 2026
S-1
Form S-1 - General form for registration of securities under the Securities Act of 1933
Jan 13, 2026
DRS
Form DRS - Draft Registration Statement
Oct 23, 2025
RW
Form RW - Registration Withdrawal Request
Aug 24, 2022
Proxies
TYPE
HEADLINE
FILED AT
DEF 14A
Form DEF 14A - Other definitive proxy statements
Jun 24, 2026
PRE 14A
Form PRE 14A - Other preliminary proxy statements
Jun 8, 2026
DEF 14A
Form DEF 14A - Other definitive proxy statements
Nov 27, 2024
PRE 14A
Form PRE 14A - Other preliminary proxy statements
Nov 13, 2024
DEF 14A
Form DEF 14A - Other definitive proxy statements
Nov 3, 2023
DEFA14A
Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Feb 7, 2022
Ownerships
TYPE
HEADLINE
FILED AT
SCHEDULE 13G
LYTTON LAURENCE W (Filed by)
Oct 5, 2026
3
Mioska Michael David (Reporting)
May 6, 2026
4
MacPherson Richard (Reporting)
Mar 2, 2026
4
Kaye David M (Reporting)
Dec 15, 2025
4
MacPherson Richard (Reporting)
Dec 15, 2025
4
Pavlish John (Reporting)
Dec 15, 2025
Chronological
TYPE
HEADLINE
FILED AT
Other
TYPE
HEADLINE
FILED AT
EFFECT
Form EFFECT - Notice of Effectiveness
Feb 18, 2026
CORRESP
Form CORRESP - Correspondence
Feb 12, 2026
CORRESP
Form CORRESP - Correspondence
Feb 12, 2026
CORRESP
Form CORRESP - Correspondence
Feb 12, 2026
CORRESP
Form CORRESP - Correspondence
Feb 12, 2026
CORRESP
Form CORRESP - Correspondence
Feb 9, 2026
