X0306 4 2012-10-31 0000067472 MOLEX INC MOLX/MOLXA 0001012930 SLARK MARTIN P C/O MOLEX INCORPORATED 2222 WELLINGTON COURT LISLE IL 60532 1 1 Vice Chairman and C.E.O. Common Stock 2012-10-31 4 S 0 16986 25.711 D 28540 I Trust Class A Common Stock 2012-10-31 4 S 0 8014 20.921 D 143289 I Trust Common Stock 472 I By Child Common Stock 171 I By Spouse Class A Common Stock 796174 D Class A Common Stock 5047 I By Child Class A Common Stock 19 I By Spouse Class A Common Stock 4575 I Custodian For Child Class A Common Stock 179545 I Held by Tanglin Claymore LLC The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on January 27, 2012. The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $25.50 to $25.81, inclusive. The reporting person undertakes to provide to Molex Inc., any security holder of Molex Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is the weighted average price. These shares were sold in multiple transactions at prices ranging from $19.94 to $21.13, inclusive. The reporting person undertakes to provide to Molex Inc., any security holder of Molex Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. /s/Mark R. Pacioni, attorney-in-fact for Martin P. Slark 2012-11-01