and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Director — David J. Crompton: Mr. David J. Crompton was appointed to the Board and to the Technology & Innovation Committee of the Board.

Entry into a Material Definitive Agreement On May 18, 2026, Garrett Motion Inc. (the “Company”) entered into Amendment No. 2 (the “Second Amendment”) to that certain Amended and Restated Credit Agreement, dated as of January 30, 2025, by and among the Company, Garrett Motion Holdings Inc., Garrett LX I S.à r.l., Garrett Motion Sàrl, the lenders and issuing banks party thereto, and JPMorgan Chase Bank, N.A., as administrative agent (as amended, the “Credit Agreement,” and as further amended by…

Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement of a Registrant. The information set forth under

and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Senior Vice President, General Counsel & Corporate Secretary — Jerome Maironi: Mr. Jerome Maironi is retiring and stepping down from his roles.

Director — Kevin Mahony: Kevin Mahony resigned from the Board of Directors.

Entry into a Material Definitive Agreement On August 6, 2025, Garrett Motion Inc. (the “Company”) entered into Amendment No. 1 (the “First Amendment”) to that certain Amended and Restated Credit Agreement, dated as of January 30, 2025, by and among the Company, Garrett Motion Holdings Inc., Garrett LX I S.à r.l., Garrett Motion Sàrl, the lenders and issuing banks party thereto, and JPMorgan Chase Bank, N.A., as administrative agent (the “Credit Agreement,” and as amended by the First Amendmen…

Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement of a Registrant. The information set forth under

and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Regulation FD Disclosure. On May 20, 2025, Garrett Motion Inc. (the “Company”) issued a press release announcing the commencement of a secondary public offering (the “Offering”) of 17,000,000 shares of its common stock, par value $0.001 per share (the “Common Stock”), offered by certain entities affiliated with each of Oaktree Capital Management, L.P., Centerbridge Partners, L.P. and Cyrus Capital Partners, L.P. (collectively, the “Selling Stockholders”), as well as a proposed repurchase by t…

and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement of a Registrant. The information set forth under

Entry into a Material Definitive Agreement On January 30, 2025, Garrett Motion Inc. (the “ Company ”) entered into that certain Restatement Agreement (the “ Restatement Agreement ”), which amends and restates that certain Credit Agreement, dated as of April 30, 2021 (as amended by that certain Amendment No. 1, dated as of January 11, 2022, that certain Amendment No. 2, dated as of March 22, 2022, that certain Amendment No. 3, dated as of April 27, 2023, that certain Amendment No. 4, dated as…

and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Entry into a Material Definitive Agreement General On May 21, 2024, Garrett Motion Inc. (the “ Company ”) announced today the completion of the previously announced offering by Garrett Motion Holdings Inc. (“ GMHI ”) and Garrett LX I S.à r.l. (“ Garrett LX I ” and, together with GMHI, the “ Issuers ”), the Company’s wholly owned subsidiaries, of $800.0 million in aggregate principal amount of 7.750% Senior Notes due 2032 (the “ 2032 Notes ”). The 2032 Notes were issued pursuant to an indentur…

Creation of a Direct Financial Obligation or an Obligation Under an Off-Balance Sheet Arrangement of a Registrant. The information set forth under

Other Events. On May 6, 2024 and May 7, 2024, Garrett Motion Inc. (the “Company”) announced the commencement and subsequent upsizing and pricing, respectively, by Garrett Motion Holdings Inc. and Garrett LX I S.à r.l., its wholly owned subsidiaries, of a private offering (the “Offering”) of $800 million aggregate principal amount of 7.750% senior notes due 2032 (the “notes”) that is exempt from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”). The…

and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Director — John Petry: Mr. John Petry resigned from the Board, including the Nominating and Governance Committee.