The Company accounts for and discloses net loss per common share in accordance with FASB ASC Topic 260, Earnings Per Share. Basic net loss per common share is computed by dividing net loss attributable to common stockholders by the weighted average number of common shares outstanding (which includes the common share equivalents of the outstanding Series B preferred shares). The common share equivalents of the Series A preferred shares are not included in the calculation of the weighted average number of common shares outstanding for 2014 because they were not convertible into common stock as of December 31, 2014. Diluted net loss per common share is computed by dividing net loss attributable to common stockholders by the weighted average number of common shares that would have been outstanding during the period assuming the issuance of common shares for all potential dilutive common shares outstanding. Potential common shares consist of shares issuable upon the exercise of stock options and warrants and the conversion of the Cocrystal Discovery, Inc. Series A preferred stock in 2013.

The following table sets forth the computation of basic and diluted net loss per share (amounts in thousands, except per share amounts): 

The following table sets forth the number of potential common shares excluded from the 2014 and 2013 calculations of net loss per diluted share because their inclusion would be anti-dilutive (in thousands):