Company: SPR
Filing Date: 2025-04-23
Form Type: DEF 14A
Source: 0001140361-25-015209
Chunk: 2

Company: Spirit AeroSystems Holdings, Inc.
Filing Date: 2025-04-23
Form: DEF 14A
Chunk 2
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 www.proxyvote.com prior to the Annual Meeting                        
 During the Annual Meeting, visit www.virtualshareholdermeeting.com/SPR2025 |
| MOBILE DEVICE |     | Use your tablet or smartphone to scan the QR code                          |
| PHONE         |     | Call 1-800-690-6903                                                        |
| MAIL          |     | Sign, date, and return your proxy card                                     |

If you hold your shares of Common Stock through an account with a bank, broker or other nominee, you should receive a voting instruction form from your bank, broker or other nominee seeking instruction from you as to how your shares should be voted. To vote at the Annual Meeting, attend the Annual Meeting and vote via the Annual Meeting website. See “Attending the Annual Meeting,” below. Attending the Annual Meeting The Annual Meeting will be conducted virtually again this year. Stockholders may attend the Annual Meeting at www.virtualshareholdermeeting.com/SPR2025 by entering a 16-digit control number. If you hold your shares of Common Stock as a stockholder of record, your 16-digit control number will be printed on your proxy card. If instead you hold your shares of Common Stock through an account with a bank, broker or other nominee, your bank, broker or other nominee may provide you with your 16-digit control number on the voting instruction form it furnishes to you; otherwise, you should contact your bank, broker or other nominee (preferably at least five business days before the date of the Annual Meeting) to obtain a legal proxy that will permit you to attend, and vote at, the Annual Meeting. Stockholders may vote and submit questions during the Annual Meeting on the website.

TABLE OF CONTENTS Your vote is important. Regardless of whether you plan to virtually attend the Annual Meeting, we hope you will vote as soon as possible. Thank you for your ongoing support of Spirit. Sincerely, David Myers Vice President, General Counsel and Corporate Secretary April 23, 2025 Important Notice Regarding the Availability of Proxy Materials for the 2025 Annual Meeting: The Proxy Statement and Annual Report are available at www.proxyvote.com

TABLE OF CONTENTS

TABLE OF CONTENTS

| PROXY STATEMENT SUMMARY                                  |     |  2 |
| PROPOSAL 1ELECTION OF DIRECTORS                          |     |  5 |
| CORPORATE GOVERNANCE                                     |     | 11 |
| Board Leadership                                         |     | 11 |
| Board Composition and Refreshment                        |     | 11