Form 4: Spirit AeroSystems Officer Equity Conversion

A Spirit AeroSystems executive converted their Class A Common Stock and Restricted Stock Units into Boeing common stock and RSUs following the merger.

Summary

• Gregory Lewis Brown, SVP, Global Quality of Spirit AeroSystems Holdings, Inc. reported changes in beneficial ownership.
• On December 8, 2025, 4,459 shares of Spirit AeroSystems Class A Common Stock were automatically canceled and converted.
• Each Spirit AeroSystems Class A Common Stock share was converted into the right to receive 0.1955 shares of The Boeing Company common stock.
• 27,864 Spirit AeroSystems Restricted Stock Units (RSUs) held by Mr. Brown were automatically converted into Boeing RSUs.
• The number of shares of Boeing common stock underlying each new Boeing RSU is calculated by multiplying the original number of SPR RSUs by the 0.1955 exchange ratio, resulting in approximately 5,448 Boeing common shares underlying the new RSUs.
• Any accrued but unpaid dividend equivalents on SPR RSUs were assumed and became an obligation with respect to the applicable Boeing RSUs.
• The Boeing RSUs continue to be governed by the same terms and conditions, including vesting, as the original Spirit AeroSystems RSUs.
• Following these transactions, Mr. Brown beneficially owns 0 shares of Spirit AeroSystems Class A Common Stock and 0 Spirit AeroSystems Restricted Stock Units.

Sentiment

Score: 5

Explanation: The filing is a neutral, factual report of a mandatory transaction (equity conversion) following a merger, with no positive or negative operational or financial news.

Future Outlook

The filing details the automatic conversion of Spirit AeroSystems equity into Boeing equity as a result of a merger, but does not provide forward-looking statements or guidance regarding future performance or strategic direction beyond the terms of the converted equity.

Management Comments

• The filing is a statutory report of a transaction and does not contain direct quotes or paraphrased statements from company management beyond the signature of the attorney-in-fact.

Industry Context

This filing reflects the finalization of the merger between Spirit AeroSystems and The Boeing Company, a significant consolidation event in the aerospace manufacturing sector. The integration of Spirit AeroSystems, a key supplier, into Boeing aims to streamline production and supply chains, potentially impacting the competitive landscape for other aerospace component manufacturers.

Comparison to Industry Standards

• NA. This filing reports a specific insider transaction resulting from a merger, rather than operational or financial results that would typically be benchmarked against industry standards or competitors.

Stakeholder Impact

• Shareholders of Spirit AeroSystems Holdings, Inc. had their Class A Common Stock automatically converted into shares of The Boeing Company common stock.
• The reporting person, an SVP of Global Quality, had their equity holdings in Spirit AeroSystems converted into equivalent equity holdings in The Boeing Company.

Next Steps

• The converted Boeing Restricted Stock Units will continue to be governed by their original vesting terms and conditions.
• The Boeing Company will integrate Spirit AeroSystems' operations following the merger agreement dated June 30, 2024.

Key Dates

Keywords

Spirit AeroSystems, Boeing, Merger, Form 4, Insider Transaction, Stock Conversion, RSU Conversion, Corporate Action