interests with the interests of existing stockholders. We historically have granted only stock options to our employees and any restricted stock-based awards outstanding were assumed as a result of our acquisitions.

We recognize that stock options and restricted stock-based awards dilute existing stockholders and have sought to control the number of stock options and restricted stock-based awards granted while providing competitive compensation packages. Consistent with these dual goals, our cumulative potential dilution since June 1, 2010 has been a weighted average annualized rate of 2.0% per year. The potential dilution percentage is calculated as the average annualized new stock options or restricted stock-based awards granted and assumed, net of stock options and restricted stock-based awards forfeited by employees leaving the company, divided by the weighted average outstanding shares during the calculation period. This maximum potential dilution will only result if all stock options are exercised and restricted stock-based awards vest. Of the outstanding stock options at May 31, 2013, which generally have a 10-year exercise period, less than 2% have exercise prices higher than the current market price of our common stock. In recent years, our stock repurchase program has more than offset the dilutive effect of our stock-based compensation program; however, we may reduce the level of our stock repurchases in the future as we may use our available cash for acquisitions, to pay dividends, to repay or repurchase indebtedness or for other purposes. At May 31, 2013, the maximum potential dilution from all outstanding and unexercised stock options and restricted stock-based awards, regardless of when granted and regardless of whether vested or unvested and including stock options where the strike price is higher than the current market price, was 9.6%.



The Compensation Committee of the Board of Directors reviews and approves the organization-wide stock option grants to selected employees, all stock option grants to executive officers and any individual stock option grants in excess of 100,000 shares. A separate Plan Committee, which is an executive officer committee, approves individual stock option grants of up to 100,000 shares to non-executive officers and employees. Stock option and restricted stock-based award activity from June 1, 2010 through May 31, 2013 is summarized as follows (shares in millions):

 

Our Compensation Committee approves the annual organization-wide option grants to certain employees. These annual option grants are made during the ten business day period following the second trading day after the announcement of our fiscal fourth quarter earnings report.

Recent Accounting Pronouncements

For information with respect to recent accounting pronouncements and the impact of these pronouncements on our consolidated financial statements, see Note 1 of Notes to Consolidated Financial Statements included elsewhere in this Annual Report.