Washington-based private equity firm Arlington Capital Partners has agreed to sell its portfolio company Stellant Systems, Inc to aerospace components specialist TransDigm Group in a transaction valued at $960m, according to a report by Bloomberg.
Arlington, which focuses on government-regulated industries, said the deal marks the culmination of a multi-year investment in Stellant, during which it worked closely with management to expand the company’s manufacturing capabilities, product portfolio and workforce.
Headquartered in Torrance, California, Stellant is a designer and manufacturer of radio frequency and microwave amplification products, including vacuum electron devices and solid-state power amplifiers. The business serves defence, space, medical and industrial markets, supplying critical technologies used in radar, missile, secure communications and space platforms for the US Department of Defense and allied militaries. Stellant operates four manufacturing facilities across the US, encompassing more than 700,000 square feet, and employs around 950 people.
Arlington acquired Stellant as a carve-out and positioned it as a standalone platform through sustained investment in infrastructure, research and development, and human capital. During Arlington’s ownership, the company improved operational performance, including on-time delivery, and developed an expanded pipeline of new products, while fostering an employee-focused culture.
Peter Manos, Managing Partner at Arlington Capital Partners, said the sale reflects the firm’s strategy of building IP-rich platform businesses through organic and inorganic growth. He added that TransDigm represents a strong long-term owner for Stellant, given its focus on highly engineered aerospace and defence components.
Harris Williams acted as exclusive financial adviser to Arlington and Stellant, while Kirkland & Ellis served as legal counsel. The transaction is expected to close in 2026, subject to customary regulatory approvals and closing conditions.
