12. Stock-Based Compensation Plans

The Company's stock-based compensation plans include the 2008 Omnibus Incentive Plan, as amended and restated (the “2008 Plan”), the Employee Stock Purchase Plan, the Incentive Plan – Stock Alternative, the Atlanta Capital Management Company, LLC Long-term Equity Incentive Plan (the “ACM Plan”) and the Parametric Portfolio Associates LLC, Long-term Equity Incentive Plan (the “PPA Plan”). The Company recognized total compensation cost related to its plans for the years ended October 31, 2011, 2010 and 2009 as follows:

The total income tax benefit recognized for stock-based compensation arrangements was $16.5 million, $15.0 million and $12.0 million for the years ended October 31, 2011, 2010 and 2009, respectively.

2008 Omnibus Incentive Plan

The 2008 Plan, which is administered by the Compensation Committee of the Board, allows for awards of stock options, restricted shares and phantom stock units to eligible employees and non-employee Directors. Options to purchase Non-Voting Common Stock granted under the 2008 Plan expire ten years from the date of grant, vest over five years and may not be granted with an exercise price that is less than the fair market value of the stock as of the close of business on the date of grant. Restricted shares of Non-Voting Common Stock granted under the 2008 Plan vest over five years and may be subject to performance goals. Phantom stock units granted under the 2008 Plan vest over two years. The 2008 Plan contains change in control provisions that may accelerate the vesting of awards. A total of 16.8 million shares of Non-Voting Common Stock have been reserved for issuance under the 2008 Plan. Through October 31, 2011, 3.0 million restricted shares and options to purchase 8.5 million shares have been issued pursuant to the 2008 Plan.

Stock Options

The fair value of each stock option award is estimated on the date of grant using the Black-Scholes option valuation model. The Black-Scholes option valuation model incorporates assumptions as to dividend yield, volatility, an appropriate risk-free interest rate and the expected life of the option.

Many of these assumptions require management's judgment. The Company's stock volatility assumption is based upon its historical stock price fluctuations. The Company uses historical data to estimate option forfeiture rates and the expected term of options granted. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant.

The weighted-average fair value per share of stock options granted during the years ended October 31, 2011, 2010 and 2009 using the Black-Scholes option pricing model were as follows:

Stock option transactions under the 2008 Plan and predecessor plans for the year ended October 31, 2011 are summarized as follows:

The Company received $53.5 million, $49.5 million and $21.5 million related to the exercise of options for the years ended October 31, 2011, 2010 and 2009, respectively. Options exercised represent newly issued shares. The total intrinsic value of options exercised during the years ended October 31, 2011, 2010 and 2009 was $36.8 million, $50.7 million and $27.8 million, respectively. The total fair value of options that vested during the year ended October 31, 2011 was $31.4 million.

As of October 31, 2011, there was $37.4 million of compensation cost related to unvested stock options granted under the 2008 Plan and predecessor plans not yet recognized. That cost is expected to be recognized over a weighted-average period of 2.5 years.

In November 2011, the Company granted options for the purchase of 3.1 million shares of the Company's Non-Voting Common Stock under the 2008 Plan at a price of $25.06 per share, the then current trading price of the underlying securities.

Restricted Shares

Compensation expense related to restricted share grants is recorded over the forfeiture period of the restricted shares, as they are contingently forfeitable. As of October 31, 2011, there was $46.4 million of compensation cost related to unvested awards not yet recognized. That cost is expected to be recognized over a weighted-average period of 3.2 years.

A summary of the Company's restricted share activity for the year ended October 31, 2011 under the 2008 Plan and predecessor plans is presented below:

In November 2011, the Company granted a total of 1.4 million shares of restricted shares under the 2008 plan.

Phantom Stock Units

During fiscal 2011, approximately 9,000 phantom stock units were issued to non-employee Directors pursuant to the 2008 Plan. Because these units are contingently forfeitable, compensation expense is recorded over the forfeiture period. As of October 31, 2011, there was $0.1 million of compensation cost related to unvested awards not yet recognized. That cost is expected to be recognized over a weighted-average period of one year.

Employee Stock Purchase Plan

A total of 9.0 million shares of the Company's Non-Voting Common Stock have been reserved for issuance under the Employee Stock Purchase Plan. The plan qualifies under Section 423 of the U.S. Internal Revenue Code and permits eligible employees to direct up to 15 percent of their salaries to a maximum of $12,500 per six-month offering period toward the purchase of Non-Voting Common Stock at the lower of 90 percent of the market price of the Non-Voting Common Stock at the beginning or at the end of each offering period. Through October 31, 2011, 7.9 million shares have been issued pursuant to this plan. The Company received $3.8 million, $3.9 million and $4.1 million related to shares issued under the Employee Stock Purchase Plan for the years ended October 31, 2011, 2010 and 2009, respectively.

Incentive Plan – Stock Alternative

A total of 4.8 million shares of the Company's Non-Voting Common Stock have been reserved for issuance under the Incentive Plan – Stock Alternative. The plan permits employees to direct up to half of their monthly and annual incentive bonuses toward the purchase of Non-Voting Common Stock at 90 percent of the average closing market price of the stock for five business days subsequent to the end of the offering period. Through October 31, 2011, 3.8 million shares have been issued pursuant to this plan. The Company received $3.7 million, $2.9 million and $3.6 million related to shares issued under the Incentive Plan – Stock Alternative for the years ended October 31, 2011, 2010 and 2009, respectively.

ACM Plan

The ACM Plan allows for awards of profit units tied to the financial performance of Atlanta Capital Management to key employees of that entity. Profit units granted under the ACM Plan vest over five years and are valued on date of grant utilizing an annual appraisal. The annual appraisal is developed using two models, a fading growth model and a guideline company model. These models utilize appropriate discount rates as well as relevant investment management industry market multiples. Profit units are redeemed upon the exercise of limited in-service put rights held by the employee or call rights held by the Company. The call rights held by the Company entitle the Company to repurchase the profit units at the end of a ten-year call period and each year thereafter or upon termination of employment. Profit units are not reserved for issuance; the number of profit units authorized for awards is determined annually by the Company on the first day of the fiscal year.

In the year ended October 31, 2011, approximately 38,500 profit units tied to the financial performance of Atlanta Capital Management were issued to certain employees of that entity pursuant to the ACM Plan at a weighted-average per unit price of $29.90. Because the units are contingently forfeitable, compensation expense is recorded over the forfeiture period of five years. As of October 31, 2011, there was $1.9 million of compensation cost related to unvested awards not yet recognized. That cost is expected to be recognized over a weighted-average period of 3.3 years. Through October 31, 2011, 148,200 profit units have been issued pursuant to the ACM Plan.

PPA Plan

The PPA Plan allows for awards of profit units tied to the financial performance of Parametric Portfolio Associates to key employees of that entity. Profit units granted under the PPA Plan vest over five years and are valued on a date of grant utilizing an annual appraisal. The annual appraisal is developed using two models, a fading growth model and a guideline company model. These models utilize appropriate discount rates as well as relevant investment management industry market multiples. Profit units are redeemed upon the exercise of limited in-service put rights held by the employee or call rights held by the Company. The call rights held by the Company entitle the Company to repurchase the profit units at the end of a ten-year call period and each year thereafter or upon termination of employment. Profit units are not reserved for issuance; the number of profit units authorized for awards is determined annually by the Company on the first day of the fiscal year.

In the year ended October 31, 2011, approximately 7,400 profit units tied to the financial performance of Parametric Portfolio Associates were issued to certain employees of that entity pursuant to the PPA Plan at a weighted-average per unit price of $543.32. Because these units are contingently forfeitable, compensation expense is recorded over the forfeiture period of five years. As of October 31, 2011, there was $5.4 million of compensation cost related to unvested awards not yet recognized. That cost is expected to be recognized over a weighted-average period of 3.6 years. Through October 31, 2011, 17,500 profit units have been issued pursuant to the PPA Plan.

Stock Option Income Deferral Plan

The Company has established an unfunded, non-qualified Stock Option Income Deferral Plan to permit key employees to defer recognition of income upon exercise of non-qualified stock options previously granted by the Company. As of October 31, 2011, options to purchase 0.2 million shares have been exercised and placed in trust with the Company.