X0609 4 2026-05-12 0 0001111928 IPG PHOTONICS CORP IPGP 0001053572 PEELER JOHN R false C/O IPG PHOTONICS CORPORATION 377 SIMARANO DRIVE MARLBOROUGH MA 01752 1 0 0 0 0 Common Stock 2026-05-12 4 A 0 2436 0 A 18176 D Grant of restricted stock units vesting in full on the earlier of the first anniversary of the grant date or the next annual stockholders' meeting that occurs at least 50 weeks after the prior year's meeting, subject to the Reporting Person's continued services as a director of the Issuer through the vesting date. /s/ Adam N. King, Attorney-in-Fact 2026-05-13