ClearSign Technologies (CLIR) Registration Filing summary

Company overview and business model

• Designs and develops decarbonization and emissions control technologies for industrial and commercial combustion systems, focusing on energy, chemical, and petrochemical sectors.

• Patented ClearSign Core™ technology reduces NOx emissions and improves efficiency without external flue gas recirculation or selective catalytic reduction.

• Commercialized process burner, flaring, and boiler burner technologies, with successful deployments in refining and oil production.

• Developing ClearSign Eye sensing products for combustion and transportation markets, aiming for retrofit and new equipment applications.

• Targets markets driven by increasingly stringent air pollution regulations, especially in the U.S. energy sector.

Financial performance and metrics

• As of July 17, 2025, 52,426,282 shares of common stock outstanding; aggregate market value of non-affiliate shares is approximately $31.5 million.

• Historical net tangible book value as of March 31, 2025: $11.2 million ($0.214 per share); pro forma net tangible book value after offering: $21.1 million ($0.292 per share).

• Immediate dilution to new investors in the offering is estimated at $0.233 per share at an assumed price of $0.525.

Use of proceeds and capital allocation

• Net proceeds from securities sales will be used for general corporate purposes, including working capital, R&D, marketing, sales, and potential acquisitions.

• Pending use, proceeds may be invested in short-term, interest-bearing or investment-grade securities.