William Augustus Fitzgerald III - 08 Dec 2025 Form 4 Insider Report for Spirit AeroSystems Holdings, Inc. (SPR)

Role: Director
Signature: /s/ David Myers, Attorney-in-Fact
Issuer symbol: SPR
Transactions as of: 08 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 08 Dec 2025, 09:09:55 UTC
Previous filing: 30 May 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Fitzgerald William Augustus III	Director	3801 S OLIVER ST, MC K11-60, WICHITA	/s/ David Myers, Attorney-in-Fact	08 Dec 2025	0001895228

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SPR	Restricted Stock Units	Disposed to Issuer		-37,234	-100%		0	08 Dec 2025	Class A Common Stock	37,234		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

William Augustus Fitzgerald III is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id	Content
F1	Restricted stock units (RSUs), once vested and payable, would be settled in shares of the Class A Common Stock (Shares) of the issuer on a one-for-one basis.
F2	On December 8, 2025, pursuant to the Agreement and Plan of Merger among the issuer, The Boeing Company (Boeing) and Sphere Acquisition Corp., dated June 30, 2024 (the Merger Agreement), each outstanding RSU held by a non-employee director of the issuer was automatically canceled, and the holder thereof became entitled to receive (subject to any applicable withholding or other taxes or other amounts required to be withheld by applicable law) a number of shares of Boeing common stock equal to 0.1955 multiplied by the number of Shares subject to such RSU immediately prior to the Effective Time (as defined in the Merger Agreement).

Content

Restricted stock units (RSUs), once vested and payable, would be settled in shares of the Class A Common Stock (Shares) of the issuer on a one-for-one basis.

On December 8, 2025, pursuant to the Agreement and Plan of Merger among the issuer, The Boeing Company (Boeing) and Sphere Acquisition Corp., dated June 30, 2024 (the Merger Agreement), each outstanding RSU held by a non-employee director of the issuer was automatically canceled, and the holder thereof became entitled to receive (subject to any applicable withholding or other taxes or other amounts required to be withheld by applicable law) a number of shares of Boeing common stock equal to 0.1955 multiplied by the number of Shares subject to such RSU immediately prior to the Effective Time (as defined in the Merger Agreement).