Exhibit 99.1 IPG PHOTONICS ANNOUNCES FIRST QUARTER 2025 FINANCIAL RESULTS Growth from Strategic Initiatives Drove Revenue Above the Midpoint of Guidance Book-to-Bill was Above One and Highest in Over Two Years MARLBOROUGH, Mass. – May 6, 2025 - IPG Photonics Corporation (NASDAQ: IPGP) today reported financial results for the first quarter ended March 31, 2025. | | | | Three Months Ended March 31, | | | | --- | --- | --- | --- | --- | --- | | (In millions, except per share data and percentages) | | 2025 | | ...