secwatch / observer
8-K filed June 20, 2025, 7:59 PM ET ticker BCHT CIK 0000728385
leadership confidence high sentiment neutral materiality 0.50

Birchtech Corp. Chairman Christopher Greenberg resigns; CEO MacPherson appointed interim Chairman

Birchtech Corp.

item 5.02item 9.01

Executive movements

Machine-extracted from this filing. Every card cites the SEC source. See all recent executive movements.

Departed

Christopher Greenberg

Director and Chairman of the Board
BCHT · Birchtech Corp.
Effective
2025-07-01
Successor
Richard MacPherson
Filed
June 20, 2025, 7:59 PM ET
Christopher Greenberg submitted his resignation as a director and Chairman of the Board of Birchtech Corp. (the “Company”), effective July 1, 2025.
Appointed (interim)

Richard MacPherson

Chairman of the Board (interim)
BCHT · Birchtech Corp.
Effective
2025-07-01
Filed
June 20, 2025, 7:59 PM ET
Richard MacPherson, President, Chief Executive Officer and a director of the Company, has been appointed Chairman of the Board on an interim basis, to be effective July 1, 2025.

Key facts

Extracted from this filing and checked against the source text.

Executive change SEC 8-K Item 5.02 confidence 0.95

Christopher Greenberg resigned as Director and Chairman of the Board at Birchtech Corp..

Action
resigned
Role
Director and Chairman of the Board
Exact text from the filing
Christopher Greenberg submitted his resignation as a director and Chairman of the Board of Birchtech Corp. (the “Company”), effective July 1, 2025.
View on SEC.gov
Executive change SEC 8-K Item 5.02 confidence 0.95

Richard MacPherson was appointed as Chairman of the Board (interim) at Birchtech Corp..

Action
appointed
Role
Chairman of the Board (interim)
Exact text from the filing
Richard MacPherson, President, Chief Executive Officer and a director of the Company, has been appointed Chairman of the Board on an interim basis, to be effective July 1, 2025.
View on SEC.gov

Birchtech Corp. filing history →

Source: SEC EDGAR
accession 0001477932-25-004727
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