X0202 4/A 2007-10-22 2007-10-24 0001111928 IPG PHOTONICS CORP IPGP 0001130421 GAPONTSEV VALENTIN P C/O IPG PHOTONICS CORPORATION 50 OLD WEBSTER ROAD OXFORD MA 01540 1 1 1 0 CEO & Chairman of the Board Common Stock 2007-10-22 4 S 0 14266 20.00 D 11754309 D Common Stock 2007-10-22 4 S 0 9400 20.00 D 11744909 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 23, 2007. This amended Form 4 is being filed to correct the Amount of Securities Beneficially Owned Following Reported Transaction(s) in Column 5 in Table I to reflect the sale of 4,100 shares of the 14,266 shares reported as disposed of in Column 4 in the original Form 4 filed on 10/24/07. Because of this, the amounts reported in Column 5 on Table I on the Forms 4 filed by the Reporting Person on 10/26/07, 11/27/07 and 12/28/07 also did not accurately reflect the sale of the 4,100 shares reported in Column 4 of the Form 4 filed on 10/24/07. Angelo P. Lopresti, Attorney-at-law 2008-01-17