Filing Flows › Birchtech (BCHT) › Q4 2025
Birchtech (BCHT) Q4 2025 earnings results (fourth quarter 2025)
10-K filed Mar 31, 2026
Birchtech (BCHT) reported revenue of $3.8M for the fourth quarter 2025 (Q4 2025), -32% from a year earlier and -49% from the quarter before. Operating margin was -34.6%, net loss $593K (15.6% of revenue).
Birchtech, Q4 2025: revenue $3.8M (-32% year over year), operating margin -34.6%, net loss $593K, operating cash flow $964K. The chart follows the revenue to costs, profit and cash.
| Q4 2025 | Amount | Q/Q | Y/Y |
|---|---|---|---|
| Revenue | $3.8M | -49% | -32% |
| Operating profit | −$1.3M | -262% | — |
| Net earnings | −$593K | -175% | — |
| Operating cash flow | $964K | +200% | — |
| Free cash flow | $958K | +205% | — |
What changed
Revenue was $3.8M in Q4 2025, down 32% year over year and down 49% from the previous quarter. Product Revenue was the largest line at 95% of revenue.
Gross margin was 30.8%, down 28.8 points from Q4 2024. Operating costs exceeded revenue by $1.3M, an operating margin of -34.6%. Operating expenses fell 27% while revenue fell 32%. The fastest-growing cost line was Other operating costs (+16%). The quarter ended with a net loss of $593K, after a profit of $788K the previous quarter. Non-operating items added $775K, -144% of pre-tax earnings, so the bottom line overstates operating performance.
Operating cash flow was $1.0M. Non-cash charges added back $94K of depreciation and amortization and $20K of share-based compensation. Working capital and other items added $1.4M. Capital expenditures of $6K left free cash flow of $1.0M.
Questions
What was Birchtech's revenue in the fourth quarter 2025?
Birchtech (BCHT) reported revenue of $3.8M for the fourth quarter 2025 (Q4 2025), -32% from a year earlier and -49% from the quarter before.
Was Birchtech profitable in the fourth quarter 2025?
Operating loss was $1.3M (-34.6% of revenue) and net loss $593K.
Source: Birchtech 10-K on SEC EDGAR.