Lane42 Investment Partners announced that it provided a senior secured term loan to Principal Mineral in support of its acquisition of Isola Group. Financial terms of the transaction were not disclosed.
Isola Group is a manufacturer of copper-clad laminates and dielectric prepreg materials used in the production of advanced multilayer printed circuit boards. Through the acquisition, Principal Mineral will establish what it described as the only vertically integrated Western foil-to-laminate platform.
Principal Mineral is focused on rebuilding the industrial “missing midstream” of the critical materials supply chain. The company develops and scales manufacturing capabilities that transform strategic materials into essential inputs for advanced electronics, communications systems, AI infrastructure, defense technologies, and energy applications.
In April 2025, Principal Mineral established Camden Copper, which it said is North America’s only producer of electrodeposited copper foil and the sole U.S. manufacturer of defense-grade electrodeposited copper foil.
The acquisition of Isola adds copper-clad laminate manufacturing capabilities in the United States and Europe. Copper foil and copper-clad laminates are foundational materials used in printed circuit boards, which are core components in advanced electronic systems.
The deal is expected to strengthen Principal Mineral’s ability to serve customers across the electronics value chain while improving manufacturing capabilities and supply-chain resilience for industries such as defense, advanced manufacturing, communications infrastructure, computing, aerospace, medical, automotive, and energy.
Lane42 said the financing reflects its focus on supporting high-quality businesses operating in sectors tied to U.S. economic growth, industrial reshoring, and supply-chain resilience.
Since launching in March 2025, Lane42 has expanded to 21 investment professionals and 35 employees across offices in New York City and Santa Monica. The firm has also supported growth at partner companies including Rising Tide, Aqua Terra Permian, and Avocet Partners.
Holland & Knight served as legal counsel to Principal Mineral. Latham & Watkins served as legal counsel to Lane42. Reed Smith served as legal counsel to Isola.
KEY QUOTES:
“Principal Mineral is building a highly differentiated platform at the intersection of advanced manufacturing, critical materials, and supply chain resilience. The acquisition of Isola creates a strategically important supplier serving defense, electronics, and industrial end markets, and we are pleased to provide financing that supports the company’s long-term growth objectives. This transaction reflects the type of opportunity we seek at Lane42: strong assets, experienced leadership, meaningful scale, and exposure to attractive long-term growth trends.”
Cass Traub, Co-Founder, Chief Operating Officer, and Chief Financial Officer of Lane42
“One of Lane42’s core strengths is partnering with management teams pursuing strategically significant opportunities where traditional financing solutions may not fully address a company’s needs. This transaction demonstrates Lane42’s ability to deliver flexible financing for high-quality businesses operating in sectors we believe are critical to US economic growth and industrial reshoring.”
Rob Ruberton, Co-Founder and Portfolio Manager at Lane42
“We are entering a transformative phase of growth for Principal Mineral, and Lane42’s partnership provides the strategic resources needed to drive continued innovation and growth in the strategic materials and minerals space to better support our customers. Lane42’s creativity and ability to move quickly throughout the process were instrumental in helping us achieve our objectives.”
Adam Johnson, Chief Executive Officer and Co-Founder of Principal Mineral
