X0508 4 2026-02-18 0 0001111928 IPG PHOTONICS CORP IPGP 0001842711 Gitin Mark Milton C/O IPG PHOTONICS CORPORATION 377 SIMARANO DRIVE MARLBOROUGH MA 01752 1 1 0 0 CEO 0 Common Stock 2026-02-18 4 A 0 19887 0 A 99476 D Grant of restricted stock units vesting in three annual installments of 33%, 33% and 34% on March 1, 2027, March 1, 2028 and March 1, 2029, respectively. Includes 172 shares acquired under the IPG Photonics Employee Stock Purchase Plan on June 30, 2025 and 175 shares acquired under the IPG Photonics Employee Stock Purchase Plan on December 31, 2025. /s/ Adam N. King, Attorney-in-Fact 2026-02-20