The Company adopted an Incentive Stock Plan on January 18, 2007. This plan is intended to provide incentives which will attract and retain highly competent persons at all levels as employees of the Company, as well as independent contractors providing consulting or advisory services to the Company, by providing them opportunities to acquire the Company’s common stock. While the plan terminates 10 years after the adoption date, issued options have their own schedule of termination. During 2013, the majority of the stockholders approved to increase the total available shares in the plan from 2.5 million to 3.5 million shares of common stock. During May 2014, the majority of the stockholders approved to increase the total available shares in the plan from 3.5 million to 4.25 million shares of common stock, during February 2015, the majority of the stockholders approved to increase the total available shares in the plan from 4.25 million to 4.6 million shares of common stock and during April 2015, the majority of the stockholders approved to increase the total available shares in the plan from 4.6 million to 5.1 million shares of common stock. Upon exercise, shares of new common stock are issued by the Company.

The Company adopted the 2015 Stock Incentive Plan on April 30, 2015. This plan is intended to provide incentives which will attract and retain highly competent persons at all levels as employees of the Company, as well as independent contractors providing consulting or advisory services to the Company, by providing them opportunities to acquire the Company’s common stock or to receive monetary payments based on the value of such shares pursuant to Awards issued. The 2015 Plan permits the grant of options and shares for up to 5,000,000 shares. In addition, there is a provision for an annual increase of 15% of the shares pertaining to the 2015 plan that are outstanding as of the last day of the prior year. As of December 31, 2021, approximately 4.3 million shares are available.

Under the 2015 Stock Incentive Plan, the Company has issued options to purchase approximately 3.6 million shares at an average price of $7.56 with a fair value of $241.5 million. For the years ended December 31, 2021 and 2020, the Company issued options to purchase 304,750 and 620,535 shares, respectively. Upon exercise, shares of new common stock are issued by the Company.

For the years ended December 31, 2021 and 2020, the Company recognized an expense of approximately $36.5 million and $6.3 million, respectively, of non-cash compensation expense (included in General and Administrative expense in the accompanying Consolidated Statement of Operations) determined by application of a Black-Scholes option pricing model with the following inputs: exercise price, dividend yields, risk-free interest rate, and expected annual volatility. As of December 31, 2021, the Company had approximately $7.7 million of unrecognized pre-tax non-cash compensation expense related to options to purchase shares, which the Company expects to recognize, based on a weighted-average period of 1.9 years. The Company used straight-line amortization of compensation expense over the two to three-year requisite service or vesting period of the grant. The maximum contractual term of the Company's stock options is 10 years. The Company recognizes forfeitures as they occur. There are options to purchase approximately 2.31 million shares that have vested as of December 31, 2021.

The Company uses the Black-Scholes option-pricing model to estimate the fair value of its stock option awards and warrant issuances. The calculation of the fair value of the awards using the Black-Scholes option-pricing model is affected by the Company’s stock price on the date of grant as well as assumptions regarding the following:

The expected volatility was determined with reference to the historical volatility of the Company’s stock. The Company uses historical data to estimate option exercise and employee termination within the valuation model. The expected term of options granted represents the period of time that options granted are expected to be outstanding. The risk-free interest rate for periods within the contractual life of the option is based on the U.S. Treasury rate in effect at the time of grant.

A summary of the status of the Company’s outstanding stock options as of December 31, 2021 and 2020 and changes during the periods ending on that date is as follows:


				Weighted Average				Aggregate		Weighted
	Shares			Exercise		Grant Date Fair		Intrinsic Value		Average Remaining
	(000’s)			Price		Value		(000’s)		Term (Yrs)
Options
At December 31, 2019		6,528		$	3.54			$	8,978		6.58
Granted		575			7.14	$	4.66
Exercised		(1,806	)		2.83	$	20.27		31,480
Forfeiture and cancelled		(99	)		3.93
At December 31, 2020		5,198		$	4.23			$	240,866		6.89
Granted		305		$	42.37	$	30.32
Exercised		(1,460	)		3.85	$	80.58		84,371
Forfeiture and cancelled		(443	)		5.01
At December 31, 2021		3,600		$	7.47			$	241,515		6.37
Exercisable at December 31, 2021		2,314		$	4.06			$	163,151		5.49

The following table summarizes information about employee stock options outstanding at December 31, 2021:


	Outstanding Options						Vested Options
	Number						Number
	Outstanding		Weighted		Weighted		Exercisable		Weighted		Weighted
	at		Averaged		Averaged		at		Averaged		Averaged
	December 31,		Remaining		Exercise		December 31,		Exercise		Remaining
Range of Exercise Price	2021 (000’s)		Life		Price		2021 (000’s)		Price		Life
$0.20 - $0.53		20		2.08	$	0.34		20	$	0.34		2.08
$0.65 - $1.80		100		3.15	$	1.05		100	$	1.05		3.15
$1.83 - $2.84		107		4.02	$	1.97		107	$	1.97		4.02
$3.20 - $6.20		2,993		6.27	$	4.16		2,062	$	4.21		5.68
$7.20-$60.00		380		8.93	$	37.15		25	$	15.93		8.63
Outstanding options		3,600		6.37	$	7.47		2,314	$	4.06		5.49

As of December 31, 2021, the Company had approximately $7.7 million of unrecognized pre-tax non-cash compensation expense related to options to purchase shares, which the Company expects to recognize, based on a weighted-average period of 1.9 years.

Restricted stock awards are awards of common stock that are subject to restrictions on transfer and to a risk of forfeiture if the holder leaves the Company before the restrictions lapse. The holders of a restricted stock award are generally entitled after the release to transact and obtain the same rights as rights of a stockholder of the Company, including the right to vote the shares. The holders of unvested restricted stock awards do not have the same rights as stockholders including but not limited to any dividends which may be declared by the Company, and do not have the right to vote. The value of restricted stock awards that vest over time is established by the market price on the date of its grant and generally vests over a period of 3 years. A summary of the Company’s restricted stock activity for the years ended December 31, 2021 and 2020 is presented in the following table:


	For the twelve months ended
	December 31, 2021					December 31, 2020
				Weighted					Weighted
				Average					Average
				Grant Date					Grant Date
	Shares			Fair Value		Shares			Fair Value
Unvested at beginning of period		66,229		$	28.11		90,000		$	3.23
Transfers to restricted stock units		(45,871	)		34.02		—			—
Granted		—			—		175,737			17.46
Vested		(18,913	)		14.79		(170,145	)		8.08
Forfeited and cancelled		1,187			14.72		(29,363	)		4.15
Unvested at end of period		258		$	14.72		66,229		$	28.11

The total fair value of shares vested during the year ended December 31, 2021 and 2020 was approximately $1.3 million and $2.9 million, respectively. Unrecognized compensation expense related to outstanding restricted stock awards to employees and directors as of December 31, 2021 was approximately $1,096 and is expected to be expensed over the next 0.6 years. Unrecognized compensation expense related to outstanding restricted stock awards to employees and directors as of December 31, 2020 was $0.2 million.

Restricted Stock Units

Restricted stock units are awards that give the holder the right to receive one share of common stock for each restricted stock unit upon meeting service-based vesting conditions (typically annual vesting in three equal annual installments, with a requirement that the holder remains in the continuous employment of the Company). The holders of unvested units do not have the same rights as stockholders including but not limited to any dividends which may be declared by the Company, and do not have the right to vote. The value of restricted stock units that vest over time is established by the market price on the date of its grant. A summary of the Company’s restricted stock unit activity for the year ended December 31, 2021 and 2020 is presented in the following table:


	For the twelve months ended
	December 31, 2021					December 31, 2020
				Weighted				Weighted
				Average				Average
				Grant Date				Grant Date
	Shares			Fair Value		Shares		Fair Value
Unvested at beginning of period		—		$	—		—	$	—
Transfers to restricted stock awards		45,871			34.02		—		—
Granted		573,428			54.40		—		—
Vested		(18,758	)		64.58		—		—
Forfeited and cancelled		(35,000	)		50.46		—		—
Unvested at end of period		565,541		$	52.66	$	—	$	—

The total fair value of shares vested during the year ended December 31, 2021 was approximately $1.4 million. Unrecognized compensation expense related to outstanding restricted stock units to employees and directors as of December 31, 2021 was approximately $19.8 million and is expected to be expensed over the next 2.4 years.

The Company issues stock-based awards to third-party consultants for providing marketing, sales, and general business development services related to Celsius products. The stock-based awards are in the form of restricted stock units with performance vesting conditions (“performance stock units” or “PSUs”). The holders of unvested PSUs do not have the same rights as stockholders including but not limited to any dividends which may be declared by the Company, and do not have the right to vote. The PSU performance vesting conditions are linked to the consultants obtaining specified incremental earnings for the Company in a given year over the performance vesting period, typically five years. The fair value of PSUs is based on the market price of the underlying stock on the grant date. The Company recognizes compensation cost for performance stock awards issued to non-employees in the same manner and periods as though cash had been paid for services received. A summary of the Company’s PSU activity for the years ended December 31, 2021 and 2020 is presented in the following table:


	For the twelve months ended
	December 31, 2021				December 31, 2020
			Weighted				Weighted
			Average				Average
			Grant Date				Grant Date
	Shares		Fair Value		Shares		Fair Value
Unvested at beginning of period		—	$	—		—	$	—
Granted		15,468		64.65		—		—
Vested		—		—		—		—
Forfeited and cancelled		—		—		—		—
Unvested at end of period		15,468	$	64.65	$	—	$	—

Unrecognized compensation expense related to outstanding PSUs issued to non-employee consultants as of December 31, 2021 was approximately $0.9 million and is expected to be expensed over the next 4.6 years.