Stockholders' Equity | Stockholders’ Equity Preferred Stock As of March 31, 2024, the Company had 100.0 million shares of undesignated preferred stock authorized but not issued with rights and preferences determined by the Company’s Board of Directors at the time of issuance of such shares. Common Stock The Company has three classes of authorized common stock, Class A common stock, Class B common stock and Class C common stock. Equity Incentive Plans The Company has two equity incentive plans, the 2017 Incentive Award Plan (as amended, the “2017 Plan”) and the 2007 Incentive Award Plan (the “2007 Plan,” and together with the 2017 Plan, collectively, the “Plans”). The 2017 Plan replaced the 2007 Plan. Under the 2017 Plan, the Company is permitted to grant stock options, restricted stock units (“RSUs”) and restricted stock. The primary purpose of the 2017 Plan is to enhance the Company’s ability to attract, motivate, and retain the services of qualified employees, officers, and directors. Stock Option Awards A summary of the Company’s stock option activity under the Plans as of March 31, 2024, is presented below: Number of Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value (In millions, except years and per share amounts) Outstanding at December 31, 2023 14.2 $ 7.72 6.5 $ 25.2 Granted 0.0 9.53 Exercised (0.3) 1.53 Forfeited and expired (0.1) 10.02 Outstanding at March 31, 2024 13.8 $ 7.86 6.4 $ 57.1 Options vested and exercisable at March 31, 2024 8.6 $ 6.64 5.3 $ 44.6 The grant date fair values of stock options are estimated using the Black-Scholes-Merton option pricing model. The following provides information on the weighted-average assumptions used for stock options granted during the three months ended March 31, 2024 and 2023 (shares in millions): Three Months Ended 2024 2023 Number of options granted — 0.1 Volatility 46.1 % 45.9 % Expected term (years) 6.25 years 6.25 years Dividend yield 0.0 % 0.0 % Risk-free interest rate 4.3 % 3.9 % Fair value of common stock $ 9.53 $ 8.98 Grant date fair value per share determined using a Black-Scholes-Merton option pricing model for purposes of determining compensation expense $ 4.85 $ 4.49 As of March 31, 2024, the Company had $15.2 million of unrecognized share-based compensation expense related to stock options, which the Company expects to recognize over a weighted average vesting period of approximately 1.9 years. Restricted Stock Units The grant date fair values of the Company's RSUs are determined based on the fair value of the Company's common stock on the date of grant. A summary of the Company’s activity related to RSUs as of March 31, 2024 is presented below: Number of Shares Weighted Average Grant Date Fair Value (In millions) Outstanding at December 31, 2023 12.2 $ 8.89 Granted 1.1 9.15 Vested (0.3) 9.48 Forfeited (0.2) 9.31 Outstanding at March 31, 2024 12.8 $ 8.89 As of March 31, 2024, the Company had $90.7 million of unrecognized share-based compensation expense related to RSUs, which the Company expects to recognize over a weighted average vesting period of approximately 2.9 years. Performance Stock Units The Company has granted performance stock units (“PSUs”) to select executive employees that vest over an approximately four-year service period based on a performance metric tied to the Company’s total shareholder return relative to the total shareholder return of a peer group over a one-year performance period. The grant date fair value for such PSUs was estimated using a Monte-Carlo simulation model covering the one-year performance period. Between 0% and 200% of the PSUs will become eligible to vest (“eligible PSUs”) based on achievement of the performance goal, and any eligible PSUs will vest in increments over a period of approximately four years. The PSUs are subject to both time-based and market-based vesting conditions. A summary of the Company’s activity related to PSUs as of March 31, 2024 is presented below: Number of Shares Weighted Average Grant Date Fair Value (In millions) Outstanding at December 31, 2023 1.7 $ 6.72 Granted — — Outstanding at March 31, 2024 1.7 $ 6.72 As of March 31, 2024, the Company had $6.5 million of unrecognized share-based compensation expense related to PSUs, which the Company expects to recognize over a weighted average vesting period of approximately 3.3 years. Share-based Compensation Expense Total share-based compensation expense was $13.3 million and $8.2 million for the three months ended March 31, 2024 and 2023, respectively. For the three months ended March 31, 2024 and 2023, $1.1 million and $0.6 million is included in cost of goods sold, respectively, and $2.1 million and $1.1 million is included in research and development expense, respectively, with the remaining amount included in selling, general and administrative expense in the condensed consolidated statements of operations. |