IPG PHOTONICS CORP (IPGP) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-05-12 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: IPG PHOTONICS CORP (IPGP) CIK: 0001111928 --- Reporting Owner --- Name: Samartsev Igor CIK: 0001378545 Role: Officer (SVP, Chief Scientist) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-05-12 | Code: A (Grant or award) Shares: +2,436 | Price: $0.00 Shares Owned After: 115,701 | Ownership: I (Indirect) | Nature: By Wife Footnotes: [F1] 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. --- Holdings --- [Holding #1] Security: Common Stock Ownership: D (Direct) Footnotes: [F2] Ms. Pavlova, a director, is an indirect beneficial owner of such shares as the spouse of Dr. Samartsev, an officer. [Holding #2] Security: Common Stock Ownership: I (Indirect) [Holding #3] Security: Common Stock Ownership: I (Indirect) [Holding #4] Security: Common Stock Ownership: I (Indirect) [Holding #5] Security: Common Stock Ownership: I (Indirect) [Holding #6] Security: Common Stock Ownership: I (Indirect) [Holding #7] Security: Common Stock Ownership: I (Indirect) [Holding #8] Security: Common Stock Ownership: I (Indirect) [Holding #9] Security: Common Stock Ownership: I (Indirect) [Holding #10] Security: Common Stock Ownership: I (Indirect) --- Footnotes (Complete Index) --- F1: 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. F2: Ms. Pavlova, a director, is an indirect beneficial owner of such shares as the spouse of Dr. Samartsev, an officer. --- Signature --- /s/ /s/ Adam N. King, Attorney-in-Fact for Natalia Pavlova and Igor Samartsev (2026-05-13)