Equity Plans |
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| Equity Plans | Equity Plans As of August 31, 2023, 95 million shares of our common stock were available for future awards under our equity plans, including 14 million shares approved for issuance under our employee stock purchase plan (“ESPP”). Restricted Stock and Restricted Stock Units (“Restricted Stock Awards”) As of August 31, 2023, there were 29 million shares of Restricted Stock Awards outstanding, 26 million of which contained only service conditions. For service-based Restricted Stock Awards granted through October 2021, restrictions generally lapse in one-fourth or one-third increments during each year of employment after the grant date. For service-based Restricted Stock Awards granted beginning in November 2021, restrictions generally lapse on 25% or 33% of the units granted after the first year and on 6.25% or 8.33% each quarter thereafter over the remaining three or two years of employment. Restrictions generally lapse on Restricted Stock with performance or market conditions as conditions are met over a 3-year period. At the end of the performance period, the number of actual shares to be awarded will vary between 0% and 200% of target amounts, depending upon the achievement level. In 2022, our Board of Directors approved dividend equivalent rights for unvested restricted stock units awarded on or after October 13, 2021. Restricted Stock Awards activity for 2023 is summarized as follows:
Employee Stock Purchase Plan (“ESPP”) Our ESPP is offered to substantially all employees and permitted eligible employees to purchase shares of our common stock through payroll deductions of up to 10% of their eligible compensation, subject to certain limitations prior to August 2021. Beginning in August 2021, employees are permitted to deduct up to 15% of their eligible compensation to purchase shares under the ESPP. The purchase price of the shares under the ESPP equals 85% of the lower of the fair market value of our common stock on either the first or last day of each -month offering period. Compensation expense is calculated as of the beginning of the offering period as the fair value of the employees’ purchase rights utilizing the Black-Scholes option valuation model and is recognized over the offering period. Grant-date fair value and assumptions used in the Black-Scholes option valuation model were as follows:
Under the ESPP, employees purchased 5 million, 4 million, and 3 million shares of common stock in 2023, 2022, and 2021, respectively, at a per share weighted average price of $51.93, $58.52, and $51.42, respectively. Stock Options As of August 31, 2023, stock options of 2 million shares were outstanding, all of which were fully exercisable. Stock options expire 8 years from the date of grant. We did not grant any stock options in 2023, 2022, or 2021. Stock options of 1 million shares were exercised in 2023. The total intrinsic value for options exercised was $30 million, $54 million, and $143 million in 2023, 2022, and 2021, respectively. Stock-based Compensation Expense
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