Three Corona aerospace suppliers, three new owners in a year
Control of Corona's flight-critical aerospace cluster is shifting hands. In roughly twelve months, three of the city's specialized suppliers have changed owners — one to a strategic buyer, one to a venture-backed roll-up, one through the public markets — moving the region's highest-skill manufacturing onto corporate and Wall Street balance sheets.
The most recent came in May, when Parker Hannifin agreed to buy the commercial and defense aerospace business of CIRCOR International for $2.55 billion in cash. CIRCOR Aerospace is headquartered in Corona, where it runs roughly 187,000 square feet across two facilities making fluid-control and landing-gear systems for commercial and military aircraft. The seller is the private-equity firm KKR, which had bought CIRCOR for $1.8 billion in 2023 — a sale that hands a Cleveland-based industrial giant a Corona operation it expects to grow at double-digit rates. The deal is expected to close in the second half of this year.
Nine months earlier, Cal-Draulics — a Corona hydraulics maker founded in 1950 whose parts have flown on nearly every major American aircraft program from the F-4 to the F-35 — was absorbed into Amca, the Advanced Manufacturing Company of America. Amca is a year-old, venture-backed platform assembling legacy aerospace suppliers; it raised $76.5 million to start in 2025 and has since closed a $300 million round, buying up small, high-precision shops across Southern California. Cal-Draulics' former owner joined Amca's engineering team as part of the deal.
The third is a public company. Karman Space & Defense, whose AMRO division operates a Corona plant opened in 2021, priced an $854 million secondary stock offering at $61 a share in late May. Karman itself took none of the proceeds — the sale was existing backers cashing out — but the appetite is the signal: the offering cleared against a backlog the company puts north of $1 billion, evidence of how hot investor demand for this corner of defense manufacturing has run.
The three deals run on different mechanics, but the direction is one. Corona sits on a dense cluster of small, specialized aerospace suppliers — the kind of flight-critical machining and hydraulics work that takes decades to build and can't be stood up overnight. That scarcity is exactly what outside capital is now paying for. For the region, the open question is what consolidation does over time: whether ownership concentrated in Cleveland, El Segundo, and the public markets keeps reinvesting in Corona floor space and Corona headcount, or eventually rationalizes it. State employment records show no layoff notices filed at any of the three sites through late June, so for now the work stays. The capital structure above it does not.