Top 10 Metals, Minerals and Mining Capital Raises and Investors in the U.S. – June 1st to 30th, 2026
Several interesting transactions closed in the Metals, Minerals and Mining sector over the past month. If you would like more info or would like to discuss the capital raising market for your company, please contact me.
PIPE
- Surge Battery Metals, exploration stage company that engages in the acquisition, exploration and development of mineral properties carried out in Canada and USA, received $36 million of development capital from SAF Group.
- USA Rare Earth, vertically integrated, domestic rare earth magnet supply chain that supports the state of energy, mobility, and national security in the United States, received $1.6 billion of development capital from investors.
Merger/Acquisition
- Arizona Sonoran Copper Company, mineral exploration company, was acquired by HudBay Minerals for CAD 2 billion.
- Casper Stolle Quarry & Contracting Company, mining quarry based in Dupo, Illinois, was acquired by Breedon Group, a subsidiary of Breedon Midco, for $120 million.
Later Stage VC
- Lilac, lithium extraction technology that absorbs lithium from brine resources, raised $34.37 million of Series D venture funding from investors, putting the company’s pre-money valuation at $763.63 million.
Early Stage VC
- Principal Mineral, strategic metals, high-performance alloys, and advanced materials that strengthen critical mineral supply chains, raised $280 million through a combination of debt and Series A venture funding in a deal led by Overmatch Ventures and The New Industrial Corporation, putting the company’s pre-money valuation at $463.40 million.
- Cuprum Metals, copper extraction technology that enhances the recovery of copper from mineral deposits, raised $19.4 million through a combination of Series A-1 and Series A-2 venture funding in a deal led by The Lundin Group, putting the company’s pre-money valuation at $68 million.
Seed Round
- Altillion, mineral extraction technology that recovers critical minerals from brine resources, raised $5 million of seed funding in a deal led by Flathead Forge and Energy Innovation Capital.
- MaverickX, bio-chemical platform that supports the production and processing of critical minerals and energy resources through biological technologies, raised $7.5 million of Seed-III funding from Chord Energy, Olive Tree Capital, and other investors, putting the company’s pre-money valuation at $101 million.
- Red Metals, domestic copper refining and production company that shortens the refined supply chain within the United States, raised $59 million of Series A venture funding in a deal led by Lightspeed Venture Partners.
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Tina Vital
Managing Director
Please contact me if you have any questions or would like to discuss your capital raise:
Email: tvital@castleplacement.com
(C) (917) 432-8474
Send us a message:
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.
