Spirit AeroSystems
2025
$4.7B
Why
Bring back in-house the Wichita fuselage and aerostructures business Boeing had sold in 2005, after quality escapes at Spirit, including on the Alaska Airlines door-plug jet, disrupted 737 and 787 production. Announced in July 2024 and closed on December 8, 2025 in an all-stock deal worth about $8.3 billion including debt.
Impact
Gives Boeing direct control of 737 fuselages and its largest source of spare parts. Airbus took over Spirit's Airbus-related work as part of the break-up.
Outcome
Integration is under way; Boeing's 2026 risk disclosures list realizing the expected quality improvements and synergies from Spirit as a key uncertainty.