Stock options have not been included in the diluted earnings per share calculation as they have been determined to be anti-dilutive under the treasury stock method. As described in Note 15, Corporate Conversion and Equity, on June 21, 2018, electroCore, Inc. completed a Corporate Conversion as well as its IPO to, among other things, provide for a single class of common stock of electroCore Inc., in exchange for the previous Convertible Preferred Units and Common Units of the Company. This conversion changed the relative ownership of electroCore, Inc. such that retroactive application of the conversion to periods prior to the IPO for the purposes of calculating loss per share would not be meaningful.

Prior to the Corporate Conversion, the Company’s ownership structure included several different types of LLC interests including preferred stock, common units and Profits Interests (see Note 15, Corporate Conversion and Equity). The Company analyzed the calculation of earnings per unit for periods prior to the Corporate Conversion and determined that it resulted in values that would not be meaningful to the users of these consolidated financial statements. Therefore, earnings per share information has not been presented for periods prior to the Corporate Conversion on June 21, 2018

The following table sets forth the numerators and denominators used to compute basic and diluted earnings per share of the common stock:

	For the three months ended September 30, 2019			For the three months ended September 30, 2018			For the nine months ended September 30, 2019			For the period from June 21 to September 30, 2018
Numerator – Basic and Diluted
Net loss attributable to electroCore, Inc. subsidiaries and affiliate	$	(10,687,743	)	$	(13,203,940	)	$	(36,649,794	)	$	(19,366,239	)
Denominator – Basic and Diluted
Weighted average shares of common stock outstanding		29,352,026			29,261,942			29,339,384			29,261,942
Net loss per common share, Basic and Diluted	$	(0.36	)	$	(0.45	)	$	(1.25	)	$	(0.66	)