XOMA Corporation Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Common Stock Warrants (Tables)

Common Stock Warrants (Tables)

3 Months Ended

Mar. 31, 2017

Warrants And Rights Note Disclosure [Abstract]

Summary of Common Stock Warrants Outstanding

As of March 31, 2017 and December 31, 2016, the following common stock warrants were outstanding:

Issuance Date	Expiration Date	Balance Sheet Classification	Exercise Price per Share		March 31, 2017		December 31, 2016
March 2012	March 2017	Contingent warrant liability	$	35.20		—		479,277
September 2012	September 2017	Stockholders' deficit	$	70.80		1,967		1,967
February 2015	February 2020	Stockholders' deficit	$	66.20		9,063		9,063
February 2016	February 2021	Stockholders' deficit	$	15.40		8,249		8,249
						19,279		498,556

- 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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