Riot Blockchain, Inc. Quarterly report pursuant to Section 13 or 15(d)

Stock based compensation, options and warrants (Tables)

3 Months Ended

Mar. 31, 2019

The Company recognized total stock-based compensation expense during the three months ended March 31, 2019 and 2018, from the following categories:

	Three Months Ended March 31,
	2019		2018
Restricted stock awards under the Plan	$	176,544	$	766,949
Stock option awards under the Plan		58,498		116,994
Total stock-based compensation	$	235,042	$	883,943

A summary of the Company’s unvested restricted stock activity in the three months ended March 31, 2019 is presented here:

	Number of Shares			Weighted Average Grant-Date Fair Value
Unvested at January 1, 2018		95,939		$	12.49
Vested		(22,397	)	$	9.37
Forfeited		(40,000	)	$	16.82
Unvested at March 31, 2019		33,542		$	9.39

A summary of activity under the Plan for the three months ended March 31, 2019 is presented below:

	Shares Underlying Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding at January 1, 2019		62,000	$	15.71		9.2	$	-
Outstanding at March 31, 2019		62,000	$	15.71		9.0	$	-

Exercisable at March 31, 2019		62,000	$	15.71		9.0	$	-

Following is a summary of outstanding options and warrants that were issued outside of the Plan for the three months ended March 31, 2019:

	Shares Underlying Options/Warrants		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding at January 1, 2019		1,671,113	$	39.47		2.0	$	-
Granted		1,908,144	$	1.94		5.2	$	2,537,832
Outstanding at March 31, 2019		3,579,257	$	19.46		3.6	$	2,537,832

Exercisable at March 31, 2019		3,579,257	$	19.46		5.2	$	2,537,832