| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| IP FIBRE DEVICES LTD | 10%+ Owner | C/O IPG PHOTONICS CORPORATION, 377 SIMARANO DRIVE, MARLBOROUGH | /s/ Adam N. King, Attorney-in-Fact | 21 Jan 2026 | 0001130423 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IPGP | Common Stock | Sale | $1,154,205 | -14,511 | -0.22% | $79.54 | 6,642,825 | 16 Jan 2026 | Direct | F1, F2 |
| transaction | IPGP | Common Stock | Sale | $1,175,411 | -14,656 | -0.22% | $80.20 | 6,628,169 | 16 Jan 2026 | Direct | F1, F3 |
| transaction | IPGP | Common Stock | Sale | $604,448 | -7,659 | -0.12% | $78.92 | 6,620,510 | 20 Jan 2026 | Direct | F1, F4 |
| transaction | IPGP | Common Stock | Sale | $1,122,803 | -13,960 | -0.21% | $80.43 | 6,606,550 | 20 Jan 2026 | Direct | F1, F5 |
| transaction | IPGP | Common Stock | Sale | $104,924 | -1,306 | -0.02% | $80.34 | 6,605,244 | 21 Jan 2026 | Direct | F1, F6 |
| transaction | IPGP | Common Stock | Sale | $985,924 | -12,075 | -0.18% | $81.65 | 6,593,169 | 21 Jan 2026 | Direct | F1, F7 |
Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.
Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
| Id | Content |
|---|---|
| F1 | The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 13, 2025. |
| F2 | The reported transaction involves sale transactions ranging from $78.93 to $79.90 per share. The weighted average price per share was $79.54. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price. |
| F3 | The reported transaction involves sale transactions ranging from $80.00 to $80.79 per share. The weighted average price per share was $80.20. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price. |
| F4 | The reported transaction involves sale transactions ranging from $78.65 to $79.52 per share. The weighted average price per share was $78.92. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price. |
| F5 | The reported transaction involves sale transactions ranging from $79.66 to $80.45 per share. The weighted average price per share was $80.43. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price. |
| F6 | The reported transaction involves sale transactions ranging from $79.68 to $80.60 per share. The weighted average price per share was $80.34. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price. |
| F7 | The reported transaction involves sale transactions ranging from $80.89 to $81.72 per share. The weighted average price per share was $81.65. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price. |