Company:  IPG PHOTONICS CORP (IPGP)
Form Type:  424B3
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: 
$72.18  
Change: 
-0.66 (-0.91%)  
Trade Time: 
Apr 23  
Market Cap: 
$3.75B
Description of Business
Register and access this filing in:     
  FORM 424B3
    Subject to Completion
    TABLE OF CONTENTS
    About This Prospectus Supplement
    The Offering
    Summary Consolidated Financial Data
    RISK FACTORS
    FORWARD-LOOKING STATEMENTS
    USE OF PROCEEDS
    PRICE RANGE OF OUR COMMON STOCK
    DIVIDEND POLICY
    SELLING STOCKHOLDER
    UNDERWRITING
    VALIDITY OF COMMON STOCK
    EXPERTS
    WHERE YOU CAN FIND MORE INFORMATION
    RISK FACTORS
    USE OF PROCEEDS
    DESCRIPTION OF CAPITAL STOCK
    PLAN OF DISTRIBUTION
    LEGAL MATTERS