Every material Form 8-K Birchtech Corp. has filed with the SEC since March 17, 2026, read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). Newest first; each brief links to its own page and to the filing on SEC.gov.
Birchtech Corp. said Fiona Fitzmaurice stopped serving as Chief Financial Officer on May 1, 2026, after the company gave notice, and that the decision did not stem from any disagreement. Michael Mioska, a Chartered Professional Accountant, was appointed CFO effective the same day, and the CEO and COO signed extended employment agreements that run through May 31, 2030.
Michael Mioska appointed CFO effective May 1, 2026; his compensation terms are not yet finalized and will be disclosed later.
Fiona Fitzmaurice ceased as CFO on May 1, 2026; she had served under a fractional CFO agreement dated November 1, 2023.
Richard MacPherson's employment term extended to May 31, 2030, with a $1,000,000 base salary and a $500,000 cash retention bonus.
James Trettel named Chief Operating Officer on May 1, 2026, with a $600,000 base salary and a $250,000 cash retention bonus.
Birchtech Corp. said its Board set its 2026 Annual Meeting of Stockholders for Thursday, July 23, 2026, as a virtual-only meeting, and that it did not hold an annual meeting in 2025. Stockholders who want to submit a proposal or director nomination for that meeting must deliver it to the company's Secretary by the close of business on May 26, 2026.
Annual meeting date set for Thursday, July 23, 2026; virtual-only format
Deadline for stockholder proposals and director nominations: close of business May 26, 2026
Company did not hold an annual meeting in 2025; exact time and voting matters to come in the proxy statement
On March 17, 2026, Birchtech Corp. said underwriters partially exercised their option to buy additional shares from its February 27, 2026 public offering. The company sold 600,000 more shares at the $2.40 offering price, bringing the total offering to 6,850,000 shares and gross proceeds to about $16.4 million. The filing is a financing update that increases the number of shares outstanding, and 337,500 option shares remain unexercised.
600,000 additional shares sold on March 17, 2026 at the $2.40 offering price
Additional gross proceeds of approximately $1.4 million
Total offering: 6,850,000 shares and approximately $16.4 million in gross proceeds
Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.
Only material 8-Ks get a brief: results, deals, executive changes, restructuring, impairments, delisting notices, restatements, cybersecurity incidents and other disclosed events. Routine filings (vote results, exhibits only) are skipped. Every Birchtech Corp. filing is on SEC EDGAR ↗. 8-K briefs of other companies →