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EX-31.2 - CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 302 - ZOGENIX, INC.ex312-2014331.htm
XML - IDEA: XBRL DOCUMENT - ZOGENIX, INC.R10.htm
10-Q - 10-Q - ZOGENIX, INC.zgnx-2014331x10q.htm
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EXCEL - IDEA: XBRL DOCUMENT - ZOGENIX, INC.Financial_Report.xls
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EX-32.2 - CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 906 - ZOGENIX, INC.ex322-2014331.htm
EX-32.1 - CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 906 - ZOGENIX, INC.ex321-2014331.htm
EX-31.1 - CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 302 - ZOGENIX, INC.ex311-2014331.htm
EX-10.3 - INDEPENDENT DIRECTOR COMPENSATION POLICY AMENDED MARCH 2014 - ZOGENIX, INC.ex103directorcomppolicyres.htm
EX-10.2 - AMENDMENT 1 TO ALTUS DEVELOPMENT & OPTION AGREEMENT - ZOGENIX, INC.ex102amend1toaltusdoagrmt.htm
EX-10.1 - MALLINCKRODT CO-PROMOTION TERMINATION AGREEMENT - ZOGENIX, INC.ex101mallinckrodtterminati.htm
v2.4.0.8
Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Assumptions used in the Black-Scholes Option-Pricing Model
The assumptions used in the Black-Scholes option-pricing model for the three months ended March 31, 2014 and 2013 are as follows:
 
 
Three Months Ended March 31,
 
2014
 
2013
Risk free interest rate
2.0%

 
0.8% to 1.1%

Expected term
6.0 to 6.1 years

 
5.0 to 6.1 years

Expected volatility
84.9%

 
86.8% to 87.9%

Expected dividend yield
%
 
%
Stock-Based Compensation Expense
The Company recognized stock-based compensation expense as follows (in thousands):
 
 
Three Months Ended March 31,
 
2014
 
2013
Cost of sales
$
127

 
$
45

Research and development
357

 
216

Selling, general and administrative
2,023

 
1,325

Total
$
2,507

 
$
1,586