| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Buttarazzi Mary E. | VP, Corp Controller and CAO | C/O IPG PHOTONICS CORPORATION, 377 SIMARANO DRIVE, MARLBOROUGH | /s/ Adam N. King, Attorney-in-Fact | 03 Mar 2026 | 0002060185 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IPGP | Common Stock | Tax liability | $57,233 | -435 | -7.7% | $131.57 | 5,249 | 01 Mar 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Represents shares withheld to cover taxes for restricted stock units which have vested. |