Financial Contact: Sarah Cook Knowles Investor Relations Email: investorrelations@knowles.com Exhibit 99.1 Knowles Reports Q2 2025 Financial Results and Provides Outlook for Q3 2025 Second Quarter Revenues from Continuing Operations Increased 8% on a Year over Year Basis to $146 Million, Exceeding the High- End of the Guided Range Net Cash from Operations of$36 Million; Exceeding the High-End of the Guided Range The Company Repurchased $30 Million of Shares in the Second Quarter ITASCA, Ill., July 24, 2025 ...