| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Samartsev Igor | SVP, Chief Scientist | C/O IPG PHOTONICS CORPORATION, 377 SIMARANO DRIVE, MARLBOROUGH | /s/ Adam N. King, Attorney-in-Fact for Natalia Pavlova and Igor Samartsev | 24 Feb 2026 | 0001378545 |
| Pavlova Natalia | Director | C/O IPG PHOTONICS CORPORATION, 377 SIMARANO DRIVE, MARLBOROUGH | /s/ Adam N. King, Attorney-in-Fact for Natalia Pavlova and Igor Samartsev | 24 Feb 2026 | 0001837766 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | IPGP | Common Stock | 11,285 | 19 Feb 2026 | Direct | F1 | |||||
| holding | IPGP | Common Stock | 113,265 | 19 Feb 2026 | By Wife | ||||||
| holding | IPGP | Common Stock | 10,000 | 19 Feb 2026 | By Wife's Mother | ||||||
| holding | IPGP | Common Stock | 1,200 | 19 Feb 2026 | By Trust 2015 | ||||||
| holding | IPGP | Common Stock | 176,400 | 19 Feb 2026 | By Trust Sept. 2015 | ||||||
| holding | IPGP | Common Stock | 20,983 | 19 Feb 2026 | By Trust-G4 2016 | ||||||
| holding | IPGP | Common Stock | 20,982 | 19 Feb 2026 | By Trust-I 2016 | ||||||
| holding | IPGP | Common Stock | 93,752 | 19 Feb 2026 | By Trust May 2017 | ||||||
| holding | IPGP | Common Stock | 235,972 | 19 Feb 2026 | By Trust-I May 2017 | F2 | |||||
| holding | IPGP | Common Stock | 0 | 19 Feb 2026 | By Grantor Retained Annuity Trust II September 2021 | F2 | |||||
| holding | IPGP | Common Stock | 28,908 | 19 Feb 2026 | By Grantor Retained Annuity Trust November 2022 | ||||||
| holding | IPGP | Common Stock | 122,225 | 19 Feb 2026 | By Grantor Retained Annuity Trust I September 2025 | ||||||
| holding | IPGP | Common Stock | 121,951 | 19 Feb 2026 | By Grantor Retained Annuity Trust II September 2025 |
| Id | Content |
|---|---|
| F1 | Ms. Pavlova, a director, is an indirect beneficial owner of such shares as the spouse of Dr. Samartsev, an officer. |
| F2 | In connection with the termination of the Grantor Retained Annuity Trust II September 2021, on February 19, 2026, 90,380 shares were distributed to Trust-I May 2017 and continue to be reported in this Form 4 as indirectly owned. |