Company: IPGP
Filing Date: 2025-02-20
Form Type: S-3ASR
Source: 0001111928-25-000025
Chunk: 0

Company: IPG PHOTONICS CORP
Filing Date: 2025-02-20
Form: S-3ASR
Chunk 0
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<div align='center'>As filed with the Securities and Exchange Commission on February 20, 2025</div>

#### Registration No. 333-
| UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON, DC 20549 |

#### FORM S-3
REGISTRATION STATEMENT

#### UNDER
THE SECURITIES ACT OF 1933

| IPG PHOTONICS CORPORATION(Exact name of registrant as specified in its charter) |

| Delaware                        |     | 04-3444218            |
| (State or other jurisdiction of 
 incorporation or organization)  |     | -I.R.S. Employer      
 Identification Number |

#### 377 Simarano Drive
<div align='center'>Marlborough, Massachusetts 01752
(508) 373-1100
(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)</div>

| Adam N. King, Esq.                                                                                                                                 
 Assistant General Counsel and Assistant Secretary                                                                                                  
 IPG Photonics Corporation                                                                                                                          
 377 Simarano Drive                                                                                                                                 
 Marlborough, Massachusetts 01752(508) 373-1100(Name, address, including zip code, and telephone number, including area code, of agent for service) |

<div align='center'>Copy to:</div>

#### Stuart M. Cable, Esq.

#### Joseph C. Theis, Jr., Esq.

#### Goodwin Procter LLP

#### 100 Northern Avenue

#### Boston, Massachusetts 02210
<div align='center'>(617) 570-1000</div>

| Approximate date of commencement of proposed sale to the public:  From time to time or at one time after the effective date of this registration statement. |

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. ☐

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, as amended, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box. ☒

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed