Nanotech Capital Raises and Investors in the U.S. – September 1st to 15th, 2025

Four interesting transactions closed in the Nanotech sector over the past two weeks. If you would like more info or would like to discuss the capital raising market for your company, please contact me.

Later Stage VC

1. Moleaer, nanobubble generators that deliver and ensure sustainable and chemical-free water quality improvement, raised $68.50 million through the combination of Series D venture funding from Xylem and other investors on September 4, 2025, putting the company’s pre-money valuation at $196 million.
2. Nanoramic, energy storage systems and materials that feature innovative electrode technology, raised venture funding from Top Material and Itochu on September 4, 2025.

Early Stage VC

3. Cecilia, modular microwave-based system that upcycles plastic waste into clean hydrogen and carbon nanotubes, raised venture funding from Fortius Ventures in September 2025.
4. SixLine Semiconductor, carbon nanotube alignment technology that addresses challenges faced by the semiconductor electronics space, raised venture funding from rpv in September 2025.

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Jesus Tueme

Managing Director

Please contact me if you have any questions or would like to discuss your capital raise:

Email: jtueme@castleplacement.com

(C) (646) 479-7616

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Sources: Information on this page was derived from a variety of sources including Bloomberg, Company Websites, Crunchbase, PitchBook and other news outlets. Castle Placement^® does not warrant or guarantee this information, nor makes any representations as to the accuracy of the information. For more Risks, see CPGO Risks and Disclaimers.