ClearSign Technologies (CLIR) Q4 2025 earnings summary

Executive summary

• Achieved record quarterly revenue of $3.7 million in Q4 2025 and record annual revenue of $5.2 million, up 44% year-over-year, driven by large process burner orders and expanding product lines.

• Significant market interest from major refiners and petrochemical companies, with a growing proposal pipeline and backlog.

• Asset-light business model leveraging partnerships, notably with Zeeco, to scale manufacturing and delivery.

• Advanced flexible fuel burner technology, including 100% hydrogen-capable solutions, broadening addressable markets and enabling clients to meet strict emissions regulations cost-effectively.

Financial highlights

• Q4 2025 revenue was $3.7M, up from $590K in Q4 2024, mainly from a $2.6M process burner order; full year 2025 revenue reached $5.2M, a 44% increase from $3.6M in 2024.

• Gross profit for 2025 was $1.4M, with a gross margin of 27%, down from 31% in 2024 due to warranty accruals.

• Net loss for 2025 was $5.5M, compared to $5.3M in 2024, primarily due to $746K in non-recurring legal fees.

• Net cash used in operations was $4.7M for 2025, compared to $4.4M in 2024; cash and equivalents stood at $9.2M at year-end.

Outlook and guidance

• Revenue flows expected to remain lumpy in the near term due to large, long-term orders, but long-term outlook is healthy with continued momentum and a strong proposal pipeline.

• Focus on building backlog, achieving breakeven at a $16M annual run rate, and converting opportunities into orders.

• Confident in cash position and working capital to support growth; projects are typically self-funding.

• Key milestones include major project startups and industry demonstrations in 2026.