20. Stock-Based Compensation Plans

As of June 30, 2025, we had the 2021 Stock Incentive Plan, the 2020 Directors Stock Plan, the 2014 Stock Incentive Plan, the Employee Stock Purchase Plan, the 2014 Directors Stock Plan, the Amended and Restated 2010 Stock Incentive Plan, the 2005 Directors Stock Plan, the Stock Incentive Plan and the Directors Stock Plan (“Stock-Based Compensation Plans”). No new grants will be made under the 2020 Directors Stock Plan, the 2014 Stock Incentive Plan, the 2014 Directors Stock Plan, the Amended and Restated 2010 Stock Incentive Plan, the 2005 Directors Stock Plan, the Stock Incentive Plan or the Directors Stock Plan. Under the terms of the 2021 Stock Incentive Plan, grants may be nonqualified stock options, incentive stock options qualifying under Section 422 of the Internal Revenue Code, restricted stock, restricted stock units, stock appreciation rights, performance shares, performance units or other stock-based awards. To date, we have not granted any incentive stock options, restricted stock or performance units under any plans. As part of our fair value process, we assess the impact of material nonpublic information on our share price or expected volatility, as applicable, at the time of grant. No awards in 2025 required a fair value adjustment.

As of June 30, 2025, the maximum number of new shares of common stock available for grant under the 2021 Stock Incentive Plan was 19.1 million.

For awards with graded vesting, we use an accelerated expense attribution method. The compensation cost that was charged against net income for stock-based awards granted under the Stock-Based Compensation Plans was as follows:

​

​

Nonqualified Stock Options

No nonqualified stock options were granted to employees during both the six months ended June 30, 2025 and 2024. All outstanding nonqualified stock options are vested and have been fully expensed.

Performance Share Awards

Performance share awards were granted to certain employees under the 2021 Stock Incentive Plan. Total performance share awards granted were 0.3 million for the six months ended June 30, 2025. The performance share awards granted represent initial target awards and do not reflect potential increases or decreases resulting from the final performance results to be determined at the end of the performance period. The performance share awards include a relative total shareholder return modifier under which the number of shares ultimately awarded is also impacted by our actual shareholder return relative to our S&P 500 Financial Sector Index peer group. The actual number of common shares to be awarded at the end of each performance period will range between 0% and 180% of the initial target awards. The fair value of performance share awards is determined using a Monte Carlo simulation model. The weighted-average grant date fair value of these performance share awards granted was $90.41 per common share.

As of June 30, 2025, we had $30.5 million of total unrecognized compensation cost related to nonvested performance share awards granted. The cost is expected to be recognized over a weighted-average service period of approximately 1.6 years.

Restricted Stock Units

Restricted stock units were issued to certain employees and non-employee directors pursuant to the 2021 Stock Incentive Plan. Total restricted stock units granted were 1.1 million for the six months ended June 30, 2025. The fair value of restricted stock units is determined based on the closing stock price of our common shares on the grant date. The weighted-average grant date fair value of these restricted stock units granted was $84.85 per common share.

As of June 30, 2025, we had $99.5 million of total unrecognized compensation cost related to nonvested restricted stock unit awards granted. The cost is expected to be recognized over a weighted-average period of approximately 1.8 years.

Employee Stock Purchase Plan

Under the Employee Stock Purchase Plan, employees purchased 0.3 million shares for the six months ended June 30, 2025. The weighted average fair value of the discount on the stock purchased was $8.27 per share.

As of June 30, 2025, a total of 2.4 million of new shares were available to be made issuable by us for this plan.