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Equity (Tables)

6 Months Ended

Jun. 30, 2021

Schedule of Assumptions Used to Determine Fair Value of Stock Options Granted

The fair value of the stock options granted during the six months ended June 30, 2021 and 2020 was determined using the Black-Scholes option pricing model with the following assumptions:

	June 30, 2021				June 30, 2020
Expected volatility	75.9-78.0%				70.3-74.7%
Expected term (years)	5.5-7.0				5.5-7.0
Risk free interest rate	0.5%-1.2%				0.3%-1.6%
Expected dividend yield		0	%		0%
Exercise price	$66.82-$82.21				$31.95-$50.00

Summary of Stock Option Activity

The following table provides a summary of the stock option activity under the 2018 Plan during the six months ended June 30, 2021. These amounts include stock options granted to employees, directors and consultants.

Stock options		Options				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (Years)				Aggregate Intrinsic Value
Outstanding at December 31, 2020			4,321,882			$	26.35
Granted			1,491,974			$	77.53
Exercised			(361,706	)		$	21.41
Forfeited			(19,225	)		$	50.50
Outstanding at June 30, 2021			5,432,925			$	40.65				8.40			$	199,393,804
Exercisable at June 30, 2021			2,172,181			$	22.78				7.69			$	117,772,016

Summary of Restricted Stock Grant Activity

The following table provides a summary of the restricted stock grant activity under the Incentive Plan during the six months ended June 30, 2021. These amounts include restricted stock granted to employees, directors and consultants.

Restricted shares		Shares				Weighted Average Grant Date Fair Value Per Share
Unvested restricted stock at December 31, 2020			238,712			$	16.00
Vested			(125,028	)		$	16.00
Unvested restricted stock at June 30, 2021			113,684			$	16.00

Restricted Stock Units

Summary of Restricted Stock Grant Activity

The following table provides a summary of the restricted stock unit activity under the 2018 Plan during the six months ended June 30, 2021. These amounts include restricted stock units granted to employees.

Restricted stock units		Shares				Weighted Average Grant Date Fair Value Per Share
Unvested restricted stock units at December 31, 2020			133,049			$	20.01
Vested			(40,344	)		$	19.36
Cancelled			(387	)		$	19.36
Unvested restricted stock units at June 30, 2021			92,318			$	20.30

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Tabular disclosure of the changes in outstanding nonvested restricted stock shares.

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