Stockholders' Equity | (3) Stockholders' Equity Dividends On July 12, 2023, our board of directors declared a quarterly dividend of $0.35 per share of common stock to be paid in cash on August 24, 2023 to shareholders of record at the close of business on July 27, 2023. The following table presents the cash dividends either paid previously or declared by our board of directors for future payment on a per share basis: 2023 2022 First quarter $ 0.35 $ 0.31 Second quarter 0.35 0.31 Third quarter 0.35 0.31 Fourth quarter 0.31 Total $ 1.05 $ 1.24 Stock Options The following tables summarize the details of options granted under our stock option plans that were outstanding as of June 30, 2023, and the assumptions used to value those grants. All such grants were effective at the close of business on the date of grant. Options Option Exercise Closing Stock Price on Date June 30, 2023 Date of Grant Options Options January 3, 2023 1,071,943 $ 48.00 $ 47.400 1,046,851 70,562 January 3, 2022 713,438 $ 62.00 $ 61.980 656,520 53,355 January 4, 2021 741,510 $ 48.00 $ 47.650 637,416 234,203 January 2, 2020 902,263 $ 38.00 $ 37.230 727,427 370,152 January 2, 2019 1,316,924 $ 26.00 $ 25.705 862,003 534,009 January 2, 2018 1,087,936 $ 27.50 $ 27.270 636,123 506,029 January 3, 2017 1,529,578 $ 23.50 $ 23.475 627,243 523,609 April 19, 2016 1,690,880 $ 23.00 $ 22.870 446,559 386,293 April 21, 2015 1,786,440 $ 21.00 $ 20.630 212,347 212,347 Total 10,840,912 5,852,489 2,890,559 Date of Grant Risk-free Expected Life of Expected Expected Estimated Fair January 3, 2023 4.0 % 5.00 2.6 % 29.58 % $ 11.62 January 3, 2022 1.3 % 5.00 1.7 % 28.52 % $ 13.68 January 4, 2021 0.4 % 5.00 2.0 % 29.17 % $ 9.57 January 2, 2020 1.7 % 5.00 2.4 % 25.70 % $ 6.81 January 2, 2019 2.5 % 5.00 2.9 % 23.96 % $ 4.40 January 2, 2018 2.2 % 5.00 2.3 % 23.45 % $ 5.02 January 3, 2017 1.9 % 5.00 2.6 % 24.49 % $ 4.20 April 19, 2016 1.3 % 5.00 2.6 % 26.34 % $ 4.09 April 21, 2015 1.3 % 5.00 2.7 % 26.84 % $ 3.68 All of the options in the tables above vest and become exercisable over a period of up to eight years. Generally, each option will terminate approximately 10 years after the grant date. The fair value of each share-based option is estimated on the date of grant using a Black-Scholes valuation method that uses the assumptions listed above. The risk-free interest rate is based on the U.S. Treasury rate over the expected life of the option at the time of grant. The expected life is the average length of time over which we expect the employee groups will exercise their options, net of forfeitures, which is based on historical experience with similar grants. The dividend yield is estimated over the expected life of the option based on our current dividend payout, historical dividends paid, and expected future cash dividends. Expected stock volatilities are based on the movement of our stock price over the most recent historical period equivalent to the expected life of the option. Compensation expense equal to the grant date fair value is recognized for all of these awards over the vesting period. The stock-based compensation expense for the six-month periods ended June 30, 2023 and 2022 was $3.8 and $3.0, respectively, while the second quarter of 2023 and 2022 was $1.9 and $1.5, respectively. Unrecognized stock-based compensation expense related to outstanding unvested stock options as of June 30, 2023 was $20.6 and is expected to be recognized over a weighted average period of 4.49 years. Any future changes in estimated forfeitures will impact this amount. Earnings Per Share The following tables present a reconciliation of the denominators used in the computation of basic and diluted earnings per share and a summary of the options to purchase shares of common stock which were excluded from the diluted earnings per share calculation because they were anti-dilutive: Six-month Period Three-month Period Reconciliation 2023 2022 2023 2022 Basic weighted average shares outstanding 571,033,444 575,510,253 571,138,039 575,462,097 Weighted shares assumed upon exercise of stock options 1,724,032 1,998,786 1,752,121 1,940,124 Diluted weighted average shares outstanding 572,757,476 577,509,039 572,890,160 577,402,221 Six-month Period Three-month Period Summary of Anti-dilutive Options Excluded 2023 2022 2023 2022 Options to purchase shares of common stock 2,244,555 1,350,936 1,866,320 1,354,464 Weighted average exercise prices of options $ 52.17 55.20 $ 52.96 55.22 |