Company: IPGP
Filing Date: 2025-02-20
Form Type: S-3ASR
Source: 0001111928-25-000025
Chunk: 15

Company: IPG PHOTONICS CORP
Filing Date: 2025-02-20
Form: S-3ASR
Chunk 15
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 special reports, proxy statements and other information with the SEC. These documents may be accessed without charge through the SEC’s electronic data gathering, analysis and retrieval system, or EDGAR, via electronic means, including the SEC’s home page on the Internet ( www.sec.gov ). You may also inspect the registration statement, this prospectus and any applicable prospectus supplement on this website.

Those filings are also available to the public on, or accessible through, our website at www.ipgphotonics.com. Information contained on our website is not incorporated by reference into this prospectus, and, except for the documents incorporated by reference as noted below, you should not rely upon or consider any information on, or that can be accessed from, our website as part of this prospectus or the registration statement of which this prospectus is a part.

9

### INCORPORATION OF CERTAIN INFORMATION BY REFERENCE
The SEC allows us to incorporate by reference the information and reports we file with it, which means that we can disclose important information to you by referring you to these documents. The information incorporated by reference is an important part of this prospectus, and information that we file after the date hereof with the SEC will automatically update and supersede the information already incorporated by reference. We are incorporating by reference the documents listed below, which we have already filed with the SEC, and any future filings we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act, except as to any portion of any future report or document that is not deemed filed under such provisions, after the date of this prospectus and prior to the termination of this offering:

• our Annual Report on Form 10-K for the year ended December 31, 2024, filed with the SEC on February 20 , 202 5 ;

• our Current Report on Form 8-K filed with the SEC on February 11, 2025 (other than information furnished rather than filed); and

• the description of our common stock contained in Exhibit 4.2 to our Annual Report on Form 10-K for the fiscal year ended December 31, 2020, filed with the SEC on February 2 4, 202 0 , including any amendments or reports filed for the purpose of updating such description.

Pursuant to Rule 412 under the Securities Act, any statement contained in a document incorporated or deemed to be incorporated by reference into this prospectus will be deemed to be modified