Company: IPGP
Filing Date: 2025-05-21
Form Type: S-8 POS
Source: 0001111928-25-000083
Chunk: 6

Company: IPG PHOTONICS CORP
Filing Date: 2025-05-21
Form: S-8 POS
Chunk 6
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 company arising out of claims based on acts or omissions in their capacities as directors or officers.

Any underwriting agreements that we may enter into will likely provide for the indemnification of us, our controlling persons, our directors and certain of our officers by the underwriters against certain liabilities, including liabilities under the Securities Act.

## Item 7. Exemption From Registration Claimed.
Not applicable.

## Item 8. Exhibits.
| Exhibit Number 
 3.1*           
 3.2*           |     | Description of Document                                                                                                                                                                           
 Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1 to the Registrant’s Quarterly Report on Form 10-Q filed with the Commission on August 1, 2023). 
 Amended and Restated By-Laws of the Registrant (incorporated by reference to Exhibit 3.2 to the Registrant’s Current Report on Form 8-K filed with the Commission on January 23, 2023).           |
|:---------------|:----|:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 4.1*           |     | Specimen Stock Certificate (incorporated by reference to Exhibit 4.1 to the Registrant’s Registration Statement No. 333-136521 filed with the Commission on November 14, 2006).                   |
| 4.2*           |     | IPG Photonics Corporation 2025 Incentive Compensation Plan(incorporated by reference toAppendixA to the Definitive Proxy Statement filed bythe Registrantwith the SEC on April7, 2025)            |
| 5.1+           |     | Opinion of Goodwin Proctor LLP (filed herewith).                                                                                                                                                  |
| 23.1+          |     | Consent of Deloitte & Touche LLP (filed herewith).                                                                                                                                                |
| 23.2+          |     | Consent of Goodwin Proctor LLP (included in opinion filed as Exhibit 5.1).                                                                                                                        |
| 24.1+          |     | Power of Attorney (included on signature page).                                                                                                                                                   |

+ Filed herewith.

* Incorporated herein by reference.

## Item 9. Undertakings.
(a) The undersigned Registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:

• (i) To include any prospectus