Convertible Stock and Warrants (Tables)

12 Months Ended

Dec. 31, 2018

The following table summarizes the Company’s convertible preferred stock as of the conversion date (in thousands, except share data):



	Shares Authorized	Shares Issued and Outstanding	Carrying Value at Conversion

Series A preferred	9,374,101	9,374,101	$	8,956
Series B preferred	7,868,854	7,868,854	11,941
Series C preferred	5,979,062	5,979,062	44,928
Series D preferred	6,443,818	6,443,818	102,648
Series E preferred	9,486,362	9,486,362	198,264
Series F preferred	14,597,248	13,885,893	376,962
Series G preferred	26,712,107	18,702,072	722,142
	80,461,552	71,740,162	$	1,465,841

Schedule of Preferred Stock Warrant Activity and Warrants Outstanding

The following table summarizes preferred stock warrants outstanding (in thousands, except warrants outstanding):



	December 31,
	2018			2017
	Warrants Outstanding	Fair Value		Warrants Outstanding	Fair Value

Series F	—	$	—	581,182	$	8,378
Series G	—	—		279,606	1,447
	—	$	—	860,788	$	9,825

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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