Stock Options (Tables)

6 Months Ended

Jun. 30, 2018

Stock Options

Summary of stock option activity

	Number of Options			Weighted Average Exercise Price ($)		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value ($)
Outstanding at December 31, 2016		385,000			1.42
Grants		310,000			4.20
Exercises		(150,000	)		1.12
Outstanding at December 31, 2017		545,000			3.09
Exercises		(187,500	)		2.86
Outstanding at June 30, 2018		357,500			3.21	8.08 years		311,525
Exercisable at June 30, 2018		347,500			3.27	8.14 years		283,525

Summary of consolidated statement of operations

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Research and development	$	7,091	$	64,790	$	27,966	$	64,790
General and administrative		40,558		553,088		142,180		556,082
Total	$	47,649	$	617,878	$	170,146	$	620,872

Summary of stock options outstanding and exercisable

		Stock Options Outstanding						Stock Options Exercisable
Range of Exercise Prices		Number of Shares Subject to Outstanding Options		Weighted Average Contractual Life (years)		Weighted Average Exercise Price		Number of Shares Subject To Options Exercise		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price
	0.80		10,000		6.13		0.80		10,000		6.13		0.80
	1.05		55,000		5.76		1.05		45,000		5.76		1.05
	1.25		7,500		6.96		1.25		7,500		6.96		1.25
	1.34		7,500		7.01		1.34		7,500		7.01		1.34
	1.65		10,000		7.34		1.65		10,000		7.34		1.65
	1.70		7,500		7.30		1.70		7,500		7.30		1.70
	1.91		20,000		7.71		1.91		20,000		7.71		1.91
	2.28		7,500		8.06		2.28		7,500		8.06		2.28
	4.20		232,500		8.87		4.20		232,500		8.87		4.20
	Total		357,500		8.08	$	3.21		347,500		8.14	$	3.27