Executive Change · 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): March 24, 2026 AMERICAN AIRLINES GROUP INC. (Exact name of registrant as specified in its charter) Delaware   1-8400   75-1825172 (State or other Jurisdiction of Incorporation)   (Commission File Number)   (IRS Employer Identification No.)   1 Skyview Drive, Fort Worth, Texas   76155 (Address of principal executive offices)   (Zip Code) Registrant’s telephone number, including area code: ( 682 ) 278-9000 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, $0.01 par value per share   AAL   The Nasdaq Global Select Market Preferred Stock Purchase Rights — (1) (1) Attached to the Common Stock 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 5.02. DEPARTURE OF DIRECTORS OR PRINCIPAL OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF PRINCIPAL OFFICERS. On March 24, 2026, the Board of Directors of American Airlines Group Inc. (“AAG”) elected Mary N. Dillon to AAG’s Board of Directors. The Board of Directors has determined that Ms. Dillon will serve on the Compensation Committee and the Corporate Governance and Public Responsibility Committee. Ms. Dillon will be compensated for her service as a director on the same basis as other non-employee directors of AAG. Compensation for AAG’s non-employee directors is described under the heading “ Director Compensation ” in AAG’s Proxy Statement for its 2025 annual meeting of stockholders as filed with the SEC on April 28, 2025, which is incorporated herein by reference. Ms. Dillon has no relationships requiring disclosure under Item 404(a) of Regulation S-K. Ms. Dillon is not a party to any arrangement or understanding with any other person pursuant to which she was selected as a director. ITEM 7.01. REGULATION FD DISCLOSURE. On March 24, 2026, AAG issued a press release announcing Ms. Dillon’s election to the Board of Directors. The press release is furnished herewith as Exhibit 99.1 and is incorporated by reference into this Item 7.01. The information in Item 7.01, including Exhibit 99.1, is being furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section and shall not be deemed incorporated by reference into any registration statement or other document filed pursuant to the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing. ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS. (d) Exhibits. Exhibit No.    Description 99.1 Press Release, dated March 24, 2026. 104.1 Cover page interactive data file (embedded within the Inline XBRL document). SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. A MERICAN A IRLINES G ROUP I NC . Date: March 24, 2026 By: /s/ Michelle Earley Michelle Earley Corporate Secretary