0000950123-06-012025 S-1/A 23 20060927 20060927 IPG PHOTONICS CORP 0001111928 3674 043444218 DE S-1/A 33 333-136521 061111998 50 OLD WEBSTER ROAD OXFORD MA 01540 5083731100 50 OLD WEBSTER ROAD OXFORD MA 01540 S-1/A 1 b61608a1sv1za.htm IPG PHOTONICS CORPORATION EX-10.21 2 b61608a1exv10w21.txt EX-10.21 ASSIGNMENT RESEARCH & DEVELOPMENT AGREEMENT DATED AUGUST 30, 2000 EX-10.22 3 b61608a1exv10w22.txt EX-10.22 INVESTMENT AGREEMENT DATED MARCH 1, 2001 EX-10.23 4 b61608a1exv10w23.txt EX-10.23 LOAN & SECURITY AGREEMENT DATED AUGUST 23, 2002 EX-10.24 5 b61608a1exv10w24.txt EX-10.24 NON-RECOURSE PROMISSORY NOTE DATED APRIL 1, 2003 EX-10.25 6 b61608a1exv10w25.txt EX-10.25 AMENDED & RESTATED NON-RECOURSE PROMISSORY NOTE DATED APRIL 13, 2001 EX-10.26 7 b61608a1exv10w26.txt EX-10.26 STOCK PURCHASE AGREEMENT DATED DECEMBER 14, 2004 EX-10.27 8 b61608a1exv10w27.txt EX-10.27 GUARANTY DATED AUGUST 9, 2006 EX-10.28 9 b61608a1exv10w28.txt EX-10.28 STOCK PURCHASE AGREEMENT DATED AUGUST 30, 2000 EX-10.29 10 b61608a1exv10w29.txt EX-10.29 LOAN AGREEMENT DATED JANUARY 3, 2002 EX-10.30 11 b61608a1exv10w30.txt EX-10.30 EXCHANGE AGREEMENT DATED JULY 31, 2006 EX-10.31 12 b61608a1exv10w31.txt EX-10.31 SUBSCRIPTION AGREEMENT DATED AUGUST 13, 2003 EX-10.32 13 b61608a1exv10w32.txt EX-10.32 CONFIDENTIAL SETTLEMENT AGREEMENT DATED JUNE 25, 2003 EX-10.33 14 b61608a1exv10w33.txt EX-10.33 CONVERTIBLE PROMISSORY NOTE DATED AUGUST 13, 2003 EX-10.34 15 b61608a1exv10w34.txt EX-10.34 SECURED PROMISSORY NOTE DATED AUGUST 13, 2003 EX-10.35 16 b61608a1exv10w35.txt EX-10.35 NON-RECOURSE PROMISSORY NOTE DATED SEPTEMBER 30, 2003 EX-10.36 17 b61608a1exv10w36.txt EX-10.36 NON-RECOURSE PROMISSORY NOTE DATED DECEMBER 3, 2003 EX-23.1 18 b61608a1exv23w1.txt EX-23.1 CONSENT OF DELOITTE & TOUCHE LLP GRAPHIC 19 b61608a1b6160800.gif GRAPHIC GRAPHIC 20 b61608a1b6160802.jpg GRAPHIC GRAPHIC 21 b61608a1b6160804.gif GRAPHIC GRAPHIC 22 b61608a1b6160805.gif GRAPHIC GRAPHIC 23 b61608a1b6160801.jpg GRAPHIC