TransDigm Group acquired Stellant Systems, Inc. for approximately $960 million in cash (including certain tax benefits), a transaction announced in December 2025, structured as all cash.
Stellant Systems, Inc. operates in Power & Control, is based in Torrance, California (HQ); plants in PA, NY and MA, had revenue of about approximately $300 million (CY2025E). Torrance, California-based designer and manufacturer of high-power electronic components and subsystems for the aerospace and defense end market; a portfolio company of Arlington Capital Partners. Roughly 50% of revenue is aftermarket and nearly all is from proprietary products. Manufacturing in Torrance CA; Williamsport PA; Melville NY; and Topsfield MA; about 950 employees.
Its highly engineered, proprietary products generate significant aftermarket revenue and fit well with TransDigm's long-standing business strategy, adding new products and services to TransDigm's portfolio.
About 50% aftermarket revenue, nearly all proprietary, diverse commercial and defense platforms
We are excited to have an agreement to acquire Stellant. The Company's highly engineered, proprietary products generate significant aftermarket revenue and fit well with our long-standing business strategy. The Company has established positions across a diverse range of both commercial and defense platforms, adding new products and services to TransDigm's portfolio.Mike Lisman, Chief Executive Officer, TransDigm Group
Advisory firms were not disclosed for this transaction.