Time
|
Type
|
Amount
|
May. 14, 2010
|
Initial Public Offering
|
offered 5,835,000 ADS, raising approximately US$64.2 million
|
Nov. 4, 2010
|
Follow-on public offering
|
offered 3,500,000 ADS, raising approximately US$126 million
|
May. 10,2011
|
Convertible Senior Notes
|
US$125 million due 2016
|
Sep. 19, 2013
|
Follow-on public offering
|
offered 4,370,000 ADS, raising approximately US$67.8 million
|
Jan. 14, 2014
|
Concurrent Offering
|
offered 3,750,000 ADS follow-on public offering, and US$150.0 million convertible senior notes due 2019, altogether raising US$272.1 million
|