Reg FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM  8-K   CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): December 8, 2025   THE BOEING COMPANY (Exact name of registrant as specified in its charter) Delaware 1-442 91-0425694 (State or other jurisdiction of incorporation or organization)   (Commission file number)   (I.R.S. Employer Identification No.)   929 Long Bridge Drive , Arlington , VA 22202 (Address of principal executive offices)   (Zip Code) ( 703 ) 465-3500 (Registrant's telephone number, including area code) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, $5.00 Par Value BA New York Stock Exchange Depositary Shares, each representing a 1/20th interest in a share of 6.00% Series A Mandatory Convertible Preferred Stock, $1.00 Par Value BA-PRA New York Stock Exchange Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ Item 7.01. Regulation FD Disclosure. On December 8, 2025, The Boeing Company (the “Company”) issued a press release announcing the completion of its acquisition of Spirit AeroSystems Holdings, Inc, a Delaware corporation. A copy of the Company’s press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The information in this Item 7.01, including the exhibit referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”), nor shall it be deemed incorporated by reference in any Company filing under the Securities Act of 1933 or the Exchange Act, except as shall be expressly set forth by specific reference in such filing. Item 9.01. Financial Statements and Exhibits. (d) Exhibits. Exhibit Number    Description 99.1 Press Release, dated December 8 , 2025, issued by The Boeing Company 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.   THE BOEING COMPANY By: /s/ John C. Demers John C. Demers Corporate Secretary, Vice President & Assistant General Counsel Dated: December 8, 2025