The Partner Companies Secures $318M in Growth Capital as Lattice Materials Triples Infrared Manufacturing Capacity

New updates have been reported about The Partner Companies.

The Partner Companies (TPC) is expanding its defense and aerospace footprint through a major capacity build-out at portfolio company Lattice Materials, funded in part by an $18.5 million investment from the U.S. Department of War and backed by over $300 million in new corporate financing. Lattice, a critical supplier of custom-grown silicon and germanium crystals and infrared optical components, will more than double its production footprint with an 80,000-square-foot facility in Bozeman, Montana, breaking ground in spring 2026. The facility is designed to strengthen the domestic supply chain for high-performance infrared optics used in systems such as fighter jets, armored vehicles, UAVs, missiles, satellites, and night vision equipment, and is expected to add 50 jobs over three years. Enhanced capabilities will include the largest optics-grade boule growth capacity in North America, increased output for large and standard boules, internal zone refining, advanced etching, mega-boule cropping, and expanded precision grinding, machining and polishing, with the site targeting LEED Gold certification.

For TPC, the Lattice expansion is a flagship execution of its growth strategy to scale specialty manufacturing assets serving mission-critical markets. The Department of War’s direct investment validates Lattice’s role as a key node in secure U.S. supply chains for critical minerals and infrared technologies, while reinforcing TPC’s positioning in defense-related manufacturing. Complementing this, TPC completed more than $300 million in capital raises in 2025: a strategic equity investment exceeding $100 million from Tensile Capital Management and a syndicated credit facility of over $200 million led by Huntington Bank with Key Bank as joint lead arranger. These financings bolster TPC’s balance sheet and provide long-term flexibility to fund organic expansions like Lattice’s new plant and potential acquisitions across its 11 specialty manufacturers in the U.S., U.K., Mexico and Asia. TPC leaders emphasize that Lattice’s facility build demonstrates the group’s commitment to anticipating demand, accelerating delivery timelines, and providing resilient, U.S-based manufacturing solutions to aerospace, defense, medical technology, energy and broader industrial customers.