Company:  IPG PHOTONICS CORP (IPGP)
Form Type:  S-3ASR
Filing Date:  2/27/2012 
CIK:  0001111928 
Address:  50 Old Webster Road 
City, State, Zip:  Oxford, Massachusetts 01540 
Telephone:  508-373-1100 
Last Trade
Last Trade: 
$59.67  
Change: 
0.51 (0.86%)  
Trade Time: 
04:00 PM EST  
Market Cap: 
$3.07B
Description of Business
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  FORM S-3ASR
    CALCULATION OF REGISTRATION FEE
    Table of Contents
    About This Prospectus
    RISK FACTORS
    FORWARD-LOOKING STATEMENTS
    USE OF PROCEEDS
    DESCRIPTION OF CAPITAL STOCK
    SELLING STOCKHOLDERS
    PLAN OF DISTRIBUTION
    LEGAL MATTERS
    EXPERTS
    WHERE YOU CAN FIND MORE INFORMATION
    Part II
      Item 14. Other Expenses of Issuance and Distribution.
      Item 15. Indemnification of Directors and Officers.
      Item 16. Exhibits.
      Item 17. Undertakings.
    Signatures
    Exhibit Index
  EXHIBIT 5.1
  EXHIBIT 23.1
    CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM