Exhibit 99.1 GameStop Discloses Second Quarter 2025 Results As a supplement to the Company's financial results presented in accordance with U.S. generally accepted accounting principles ("GAAP"), GameStop may use certain non-GAAP measures, such as adjusted SG&A expenses, adjusted operating income (loss), adjusted net income (loss), adjusted earnings (loss) per share, adjusted EBITDA and free cash flow. The Company believes these non-GAAP financial measures provide useful information to investors in evaluati ...