Boeing completed its acquisition of Spirit AeroSystems on December 8, 2025. The deal was announced as a roughly $4.7 billion stock purchase, but Boeing’s 2025 Form 10-K reports total consideration of $8.371 billion. The transaction is now moving into integration under regulatory conditions: Boeing must divest significant Spirit assets, and it must preserve specified supply and service access for military-aircraft competitors.
What Boeing bought—and what the $4.7 billion figure means
Boeing and Spirit announced the transaction on July 1, 2024. Boeing described the proposed deal as worth about $4.7 billion in equity, or $37.25 per Spirit share, payable in Boeing stock. The announcement also put the transaction’s value at about $8.3 billion when Spirit’s then-reported net debt was included. Those were announcement figures, not the final accounting of consideration.
Boeing’s 2025 Form 10-K reports a fair value of total consideration of $8.371 billion. The stock portion was $4.704 billion. The remaining reported components were $2.571 billion to settle loans and advances, $948 million of debt repaid on Spirit’s behalf, a $109 million premium on assumed exchangeable notes, and $39 million for the exchange of share-based awards. All figures are U.S. dollars.
| Figure | What it represents | Source and timing |
|---|---|---|
| About $4.7 billion | Announced equity value; $37.25 per Spirit share in Boeing stock | Boeing’s July 1, 2024 deal announcement |
| About $8.3 billion | Announced transaction value including Spirit’s then-reported net debt | Boeing’s July 1, 2024 deal announcement |
| $8.371 billion | Fair value of total consideration reported at closing, including stock and other listed components | Boeing’s 2025 Form 10-K |
At closing, 117.5 million Spirit common shares were exchanged for 22.98 million Boeing shares, at an exchange ratio of 0.1955 Boeing shares per Spirit share, according to Boeing’s filing. That share exchange is one part of the consideration; it does not make the $4.7 billion announcement figure interchangeable with the $8.371 billion total.
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What happens to Spirit AeroSystems now?
Boeing became Spirit’s ultimate parent at closing. Its acquired operations include Boeing-related commercial work such as 737, P-8 and KC-46 fuselages, major structures for the 767, 777 and 787, and defense and aftermarket operations. Airbus-related work and assets were addressed separately rather than folded into Boeing’s acquisition.
Boeing said when it announced the deal that bringing production systems, safety and quality management systems, and workforces under aligned priorities was a rationale for reintegration. That is the company’s stated goal, not evidence that the acquisition has already improved safety, quality, output, delivery reliability or cost. Boeing’s filing says Spirit’s results between the December 8 closing and December 31, 2025 were not material to Boeing’s consolidated financial statements; it also says pro forma 2025 and 2024 revenue and earnings were impracticable to disclose.
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What conditions came with regulatory clearance?
The deal’s closing did not remove regulatory obligations. In February 2026, the U.S. Federal Trade Commission finalized a consent order it had accepted subject to final approval in December 2025. The order requires Boeing to divest significant Spirit assets and requires Boeing and Spirit to continue providing aerostructures and related services to competing military-aircraft contractors. The FTC said the conditions address concerns that Boeing could worsen Airbus’s access to inputs or restrict rival defense contractors’ access to Spirit products and technology. The Commission approved the final order by a 2–0 vote after public comment.
Other authorities addressed the transaction or related asset transfers in their own jurisdictions. Their decisions should not be read as identical approvals: the FTC order contains ongoing obligations, while the UK decision was phase 1 clearance and the French decision concerned Airbus’s separate acquisition of designated Spirit assets.
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| Authority | Decision and date | What it covered |
|---|---|---|
| UK Competition and Markets Authority | Phase 1 clearance announced August 8, 2025; case page records the inquiry closed August 27, 2025 | UK review of Boeing’s acquisition |
| European Commission | Conditional clearance on October 14, 2025 | Boeing’s transaction, with structural commitments that included separation of Airbus-related assets |
| French Autorité de la concurrence | Unconditional clearance announced October 16, 2025 | Airbus’s acquisition of certain Spirit assets, following coordination with the European Commission |
| U.S. Federal Trade Commission | Final consent order in February 2026, after acceptance subject to final approval in December 2025 | Divestiture of significant Spirit assets and continued supply and service access for competing military-aircraft contractors |
Why Airbus is getting some Spirit assets
Airbus’s asset deal is a separate transaction for selected work packages and sites—not a purchase of all of Spirit or a reversal of Boeing’s acquisition. The agreement Airbus announced on April 28, 2025 identified A350 fuselage sections in Kinston, North Carolina, and Saint-Nazaire, France; A321 and A220 components in Casablanca; A220 pylon production in Wichita; A220 wing production and, unless a suitable buyer were identified, A220 mid-fuselage production in Belfast; and A320 and A350 wing components from Prestwick. Spirit also intended to sell its Subang, Malaysia site to a third party.
The French competition authority described separation measures at Belfast, Wichita, Prestwick and Casablanca to prevent commercially sensitive information from passing between Boeing and Airbus, with monitoring support from the European Commission. Airbus’s April 2025 agreement stated that Spirit would receive $439 million in compensation, subject to closing adjustments. That is the announced agreement amount, not a verified final net payment. The cited authority and company announcements establish the agreed perimeter and clearance, but do not establish the final handover status of every listed asset.
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Have safety, quality or production improved because of the deal?
The cited filings and regulatory announcements do not provide a causal post-close measure of the acquisition’s effect on aircraft safety, production quality, output, delivery timing or cost. Those are outcomes to assess over time, not results that follow automatically from the change in ownership.
There is relevant oversight context, but it should not be attributed to the Spirit acquisition. On July 17, 2026, the FAA announced that Boeing could again issue airworthiness certificates at the end of production for all 737 MAX and 787 airplanes, effective July 20. The FAA said the decision followed eight months of data showing consistent production-quality findings; it also said it would continue inspections, audits and monitoring and continue assessing Boeing’s Safety Management System and safety culture. The FAA announcement did not say the decision resulted from the Spirit deal.
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What to watch next
- Divestitures and separation: whether Boeing completes the asset divestitures required by the FTC and maintains the information safeguards around Airbus-related work.
- Military supply commitments: whether competing defense contractors continue receiving the aerostructures and services covered by the FTC order.
- Measured operating results: future attributable disclosures on safety, quality, production, delivery performance and cost. Ownership integration alone does not demonstrate an improvement in any of them.
- Financial reporting: how Boeing accounts for integration, divestitures and Spirit’s contribution in later filings. The 2025 filing says the post-close period through year-end was not material to consolidated results and that comparable pro forma figures were impracticable to disclose.
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