Corporate Information

TRANSFER AGENT AND REGISTRAR

Computershare Trust Company, N.A.
250 Royall Street
Canton, MA 02021

AUDITORS

Deloitte & Touche LLP
111 South Wacker Drive
Chicago, IL 60606

COMMON STOCK

ITW common stock is listed on the New York Stock Exchange
Symbol—ITW

ANNUAL MEETING

Friday, May 4, 2012, 3:00 p.m.
The Northern Trust Company
50 South LaSalle Street
Chicago, IL 60603

STOCK AND DIVIDEND ACTION

The company's dividend guideline provides for the dividend payout rate to be in a range of 30 to 45 percent of the company's last two years' average free operating cash flow. Effective with the October 12, 2011 payment, the quarterly cash dividend on ITW common stock was increased to 36 cents per share. ITW's annual dividend payment has increased 48 consecutive years, except during a period of government controls in 1971.

DIVIDEND REINVESTMENT PLAN

The ITW Common Stock Dividend Reinvestment Plan enables registered shareholders to reinvest the ITW dividends they receive in additional shares of common stock of the company at no additional cost. Participation in the plan is voluntary, and shareholders may join or withdraw at any time. The plan also allows for additional voluntary cash investments in any amount from $100 to $10,000 per month. For a brochure and full details of the program, please direct inquiries to:

COMPUTERSHARE TRUST COMPANY, N.A.

Dividend Reinvestment Service
250 Royall Street
Canton, MA 02021
888.829.7424

SHAREHOLDER INFORMATION

Questions regarding stock ownership, dividend payments or change of address should be directed to the company's transfer agent, Computershare Trust Company, N.A.

For additional assistance regarding stock holdings, please contact:

Janet O. Love
Deputy General Counsel
847.724.7500

Security analysts and investment professionals should contact:

John L. Brooklier
Vice President of Investor Relations
847.657.4104