X0303 4 2010-03-16 0 0000049826 ILLINOIS TOOL WORKS INC ITW 0001143959 MCCORMACK ROBERT C 3600 WEST LAKE AVENUE GLENVIEW IL 60026 1 0 0 0 Common Stock 2010-03-16 4 S 0 124631 45.8588 D 5648537 I Trusts Common Stock 2010-03-17 4 S 0 48269 46.1517 D 5600268 I Trusts Common Stock 4858914 I Trusts Common Stock 9742 D Phantom Stock Units Common Stock 4956 4956 D This transaction was executed in multiple trades at prices ranging from $45.80 to $45.94. The price reported above reflects the average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, Illinois Tool Works Inc. or a shareholder of Illinois Tool Works Inc. full information regarding the number of shares and prices at which the transaction was effected. Shares held in trusts of which the Reporting Person is a co-trustee and in which a member of his immediate family (adult not living in his household) has a pecuniary interest. The Reporting Person disclaims beneficial ownership of these shares. This transaction was executed in multiple trades at prices ranging from $46.00 to $46.36. The price reported above reflects the average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, Illinois Tool Works Inc. or a shareholder of Illinois Tool Works Inc. full information regarding the number of shares and prices at which the transaction was effected. Shares held in trusts of which the Reporting Person is a co-trustee and has a pecuniary interest. Represents units of phantom stock under the Phantom Stock Plan for non-employee directors as of February 12, 2010. Each unit is equal in value to one share of common stock. The units are not transferable and have no voting rights. Additional units are credited in amounts equivalent to cash dividends paid on the common stock. Robert C. McCormack by James H. Wooten, Jr., Senior Vice President, General Counsel & Secretary, Attorney-In-Fact POA on File 2010-03-18