In December 2012, the Company adopted the 2012 Stock Option and Grant Plan (the “Plan”) under which the Company may grant stock options to purchase shares of its common stock to certain employees and nonemployees of the Company. The 2012 Plan was terminated as of the Closing, and accordingly, no additional awards will be granted under the 2012 Plan thereafter.

In connection with the Closing, the Company adopted the 2021 Equity Incentive Plan (the “2021 Plan”) and the 2021 Employee Stock Purchase Plan (“2021 ESPP”). The number of shares available for issuance under the 2021 Plan will be increased on the first day of each fiscal year, beginning on January 1, 2022, in an amount equal to the lesser of (i) 23,951,000 shares of New Spire's Class A common stock, (ii) a number of shares of New Spire's Class A common stock equal to 5% of the total number of shares of all of New Spire's Class A common stock outstanding as of the last day of the immediately preceding fiscal year, or (iii) such number of shares of New Spire's Class A common stock as the Company’s board of directors or its designated committee may determine no later than the last day of the immediately preceding fiscal year.

The 2021 Plan permits the grant of incentive stock options, nonstatutory stock options, stock appreciation rights, restricted stock, restricted stock units, and performance awards to employees, directors, or consultants under the 2021 Plan. Under the 2021 ESPP, the Company can grant stock options to employees to purchase shares of Class A common stock at a purchase price which equals 85% of the lower of (i) the fair market value of common stock on the first trading day of the offering period or (ii) the fair market value of common stock on the exercise date. As of June 30, 2022, 7,214,136 and 3,194,000 shares were available for grant under the 2021 Plan and 2021 ESPP, respectively.

The Company’s option award quantities and prices prior to the Merger have been retroactively restated to reflect the exchange ratio of approximately 1.8282 established in the Merger.

The Company received $796 and $673 in cash proceeds from options exercised during the six months ended June 30, 2022 and 2021, respectively. The weighted-average grant date fair value of options granted for the six months ended June 30, 2021 was $4.96. There were no options granted for the six months ended June 30, 2022.

For RSUs with service-based vesting conditions, the fair value is calculated based upon the Company’s closing stock price on the date of grant, and the stock-based compensation expense is recognized over the four-year vesting period.

As of June 30, 2022, there was $36,229 of total unrecognized compensation expense related to options and RSUs expected to be recognized over a weighted average-period of 2.55 years.