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BCHTNYSE
Birchtech Corp.
Measuring & Controlling Devices, NEC · DE · CIK 728385
Birchtech Corp. provides activated carbon technologies for air and water purification, including mercury capture and forever chemical removal
red 8-K · 90d
$55M
Market cap
$2.05
Last close
+2.5%
1D
-1.0%
5D
58K
Volume
Price · last 39 sessions+26.5%
May 4L $1.32 · H $2.34Jun 29
273
Total filings
Jun 24, 2026
Last filing
12/31
Fiscal year end
DEF 14ADEF 14AJun 24, 202610-QFORM 10-QMay 13, 20268-K/AExecutive ChangeMay 12, 20268-KExecutive ChangeMay 6, 20268-KCompany UpdateApr 13, 202610-KFORM 10-KMar 31, 20268-KCompany UpdateMar 17, 20268-KMaterial Agreement · Company UpdateFeb 27, 2026424B4424B4Feb 27, 2026S-1/AS-1/AFeb 12, 2026S-1/AS-1/AFeb 3, 2026S-1S-1Jan 13, 20268-KCompany UpdateJan 5, 20268-KSecurity-Holder Rights · Bylaw AmendmentDec 29, 202510-QFORM 10-QNov 13, 202510-QFORM 10-QAug 14, 20258-KExecutive ChangeJun 20, 202510-QFORM 10-QMay 15, 202510-KFORM 10-KMar 31, 20258-KRestatementMar 31, 20258-KResults of OperationsMar 4, 20258-KShareholder VoteJan 6, 2025DEF 14ADEF 14ANov 27, 20248-KBylaw Amendment · Company UpdateNov 15, 202410-QFORM 10-QNov 14, 20248-KCompany UpdateOct 21, 20248-KBylaw Amendment · Reg FD DisclosureOct 17, 202410-QFORM 10-QAug 12, 20248-KCompany UpdateAug 1, 20248-KExecutive ChangeJun 13, 202410-QFORM 10-QMay 15, 202410-KFORM 10-KApr 16, 20248-KCompany UpdateMar 5, 20248-KMaterial Agreement · Results of OperationsMar 4, 20248-KCompany UpdateJan 4, 20248-KShareholder VoteDec 7, 202310-QFORM 10-QNov 20, 20238-KCompany UpdateNov 14, 20238-KExecutive ChangeNov 7, 2023DEF 14ADEF 14ANov 3, 20238-KExecutive ChangeOct 16, 20238-KCompany UpdateSep 15, 20238-KAuditor ChangeSep 14, 202310-QFORM 10-QAug 16, 20238-KCompany UpdateJul 10, 20238-KExecutive ChangeJul 6, 202310-Q/AFORM 10-Q/AJun 7, 202310-QFORM 10-QJun 6, 20238-KExecutive ChangeMay 30, 202310-KFORM 10-KMay 15, 20238-KResults of OperationsApr 20, 20238-KExecutive ChangeFeb 15, 20238-KMaterial AgreementFeb 3, 20238-KReg FD DisclosureJan 25, 20238-KResults of OperationsJan 18, 20238-KExecutive ChangeDec 7, 202210-QFORM 10-QNov 14, 20228-KMaterial Agreement · Agreement TerminatedNov 2, 20228-KMaterial Agreement · New Debt / ObligationSep 30, 20228-KMaterial Agreement · New Debt / ObligationAug 31, 202210-QFORM 10-QAug 15, 20228-KAuditor ChangeAug 8, 20228-KExecutive Change · Equity IssuanceJun 6, 202210-QFORM 10-QMay 18, 202210-KFORM 10-KApr 5, 20228-KResults of OperationsMar 10, 20228-KShareholder VoteFeb 25, 20228-KResults of OperationsFeb 17, 2022DEFA14ADEFA14AFeb 7, 20228-KMaterial Agreement · Company UpdateJan 28, 2022DEF 14ADEF 14AJan 24, 20228-KExecutive ChangeNov 26, 202110-QFORM 10-QNov 15, 2021S-1FORM S-1Nov 10, 20218-KResults of OperationsNov 5, 20218-KReg FD DisclosureOct 5, 202110-QFORM 10-QAug 16, 20218-KEquity Issuance · Company UpdateJun 28, 20218-KShareholder VoteJun 9, 20218-KMaterial Agreement · Company UpdateJun 7, 2021
Insider Activity
In the 90 days to Feb 27, 2026: 1 insider bought $750K.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Feb 27, 2026 | Macpherson RichardPresident and CEO | Buy | 312,500 | $2.40 | $750K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
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