For the -month periods ended and our total stock-based compensation expense, which includes reversals of expense for certain forfeited or cancelled awards, was approximately and respectively. We have recorded any income tax benefit related to stock-based compensation in either of the -month periods ended and

 

A summary of the status of our stock options as of and changes during the -month period then ended, is presented below.

 

 

		Three Months Ended March 31, 2021
		Number of Options				Weighted Average Exercise Price				Weighted Average Remaining Contractual Life (years)				Aggregate Intrinsic Value
Outstanding, January 1, 2021			549,970			$	8.81				8.0			$	209,280
Granted			229,500				2.54
Outstanding, March 31, 2021			779,470			$	6.97				8.4			$	184,320
Exercisable, March 31, 2021			201,438			$	15.21				6.4			$	67,841

 

The weighted average grant date fair value per stock option granted during the -month period ended was Key assumptions used in the Black-Scholes option pricing model for stock options granted during the -month period ended were the Company's stock price, an expected volatility rate of a risk-free rate of and an expected life of years. 

 

A summary of the status of our unvested restricted stock as of and changes during the -month period then ended, is presented below.

 

		Three Months Ended March 31, 2021
		Number of Shares				Weighted Average Grant-Date Fair Value
Unvested, January 1, 2021			60,000			$	2.90
Granted			12,500				2.28
Vested			(10,000	)			1.06
Unvested, March 31, 2021			62,500			$	3.07

 

As of there was approximately of total unrecognized compensation expense related to unvested stock-based awards, which we expect to recognize over the remaining weighted average vesting term of years.