Ekso Bionics Holdings, Inc. General form of registration statement for all companies including face-amount certificate companies

General form of registration statement for all companies including face-amount certificate companies

Employee Stock Options (Tables)

Employee Stock Options (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2014

Dec. 31, 2013

Employee Stock Options [Abstract]

Summary of Stock Option Activity

The following table summarizes stock option activity under the Company's stock option plan (without regard to the conversion ratio used in the Merger discussed in Note 18, Subsequent Events):

	Shares			Number of			Weighted-Average
	Available For Grant			Options Outstanding			Exercise Price

Balance at December 31, 2011		2,473,010			3,539,600		$	0.357
Options granted		(1,879,375	)		1,879,375			0.792
Options exercised		-			(156,624	)		0.203
Options repurchased		8,122			-			-
Options cancelled		958,679			(958,679	)		0.463
Balance at December 31, 2012		1,560,436			4,303,672			0.524
Options granted		(1,794,782	)		1,794,782			0.930
Options exercised		-			(504,321	)		0.127
Options cancelled		624,388			(624,388	)		0.718
Balance at December 31, 2013		390,042			4,969,745		$	0.686

Schedule of Fair Value Calculation Assumptions

The per-share fair value of each stock option was determined on the date of grant using the Black-Scholes option pricing model using the following assumptions:

	Three months ended March 31,
	2014	2013

Dividend yield	-	-
Risk-free interest rate	1.74% - 2.68%	0.83%-1.13%
Expected term (in years)	5-10	5-10
Volatility	66%	65%

The assumptions used in the Black-Scholes option pricing model in calculating the fair value of stock options granted to employees are as follows:

	Years ended December 31,
	2013		2012

Dividend yield		-		-
Risk-free interest rate		0.83% - 1.93%		1.20%-2.49%
Expected term (in years)		5-6		6
Volatility		65%-70%		65%

The assumptions used in the Black-Scholes option pricing model in calculating the fair value of stock options granted to non-employees are as follows:

	Years ended December 31,
	2013		2012

Dividend yield		-		-
Risk-free interest rate		0.83%-1.73%		1.63%
Expected term (in years)		5		5
Volatility		66%-71%		67%

Allocation of Stock Option Compensation Expense

Total stock-based compensation expense related to options granted to employees and non-employees was included in the unaudited Condensed Consolidated Statements of Operations as follows:

	Three months ended March 31,
	2014		2013

Sales and marketing	$	100,522	$	24,686
Research and development		87,947		19,655
General and administrative		178,171		41,814
	$	366,640	$	86,155

Total stock-based compensation expense related to options granted to employees and non-employees was included in the consolidated statements of operations as follows:

	December 31,
	2013		2012

General and administrative	$	197,072	$	171,968
Research and development		82,608		69,609
Sales and marketing		110,937		91,889
	$	390,617	$	333,466