Birchtech Corp. 8-K

What Happened
Birchtech Corp. (BCHT) announced in a Form 8-K filed May 6, 2026 that Fiona Fitzmaurice ceased serving as Chief Financial Officer effective May 1, 2026. Ms. Fitzmaurice had provided fractional CFO services under an agreement dated November 1, 2023; the company gave notice of termination in accordance with that agreement. The company stated the departure was not the result of any disagreement with management on the company’s operations, policies or practices.

Key Details

• Departure effective date: May 1, 2026.
• Employment basis: Ms. Fitzmaurice served under a fractional CFO agreement dated November 1, 2023.
• Company representation: Termination was not due to any disagreement with the company.
• Related filings: The 8-K includes exhibits for amended and restated employment agreements dated May 1, 2026 for Richard MacPherson and James Trettel, and a press release dated May 5, 2026.

Why It Matters
A CFO departure is a material executive change investors watch because it affects financial leadership and oversight. The filing confirms the exit followed contract terms and was not due to a reported dispute, which reduces immediate governance concern. The company has not disclosed a successor in this 8-K, so investors should monitor further SEC filings and company communications for information on interim coverage or a permanent replacement and any potential impact on financial reporting or guidance.