A summary of option activity under all plans was as follows:



	Number of Options		Weighted Average Exercise Price Per Share

Outstanding at December 31, 2015	602,207		8.58
Granted	167,819		7.31
Cancelled	(160,126	)	12.94
Exercised	(79,166	)	4.48
Outstanding at December 31, 2016	530,734		7.48
Granted	192,984		3.55
Cancelled	(377,095	)	6.71
Expired	(56,111	)	10.65
Exercised	(42,000	)	2.30
Outstanding at December 31, 2017	248,512		$	5.76
Granted	100,746		$	1.97
Cancelled	(46,387	)	$	6.96
Expired	(10,000	)	$	20.00
Outstanding at December 31, 2018	292,871		$	3.78

Vested and expected to vest at December 31, 2018	272,247		$	3.90

Exercisable at December 31, 2018	159,007		$	4.98

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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