Annual Reports/10-Ks and Proxies Filing date Form View Mar 8, 2013 10-K View HTML 0001193125-13-097243.xls Apr 30, 2013 10-K/A View HTML 0001193125-13-188007.xls Mar 7, 2014 10-K View HTML 0001144204-14-013973.xls Mar 6, 2015 10-K View HTML 0001144204-15-014412.xls Mar 4, 2016 10-K View HTML 0001144204-16-085951.xls Mar 7, 2017 10-K View HTML 0001144204-17-013273.xls Mar 14, 2018 10-K View HTML 0001144204-18-014651.xls Filing date Form View May 9, 2013 PRE 14A View HTML 0001193125-13-211329.xls May 22, 2013 DEF 14A View HTML 0001193125-13-231279.xls Jun 19, 2013 DEFA14A View HTML 0001193125-13-263829.xls Apr 11, 2014 PRE 14A View HTML 0001144204-14-022080.xls Apr 30, 2014 DEF 14A View HTML 0001144204-14-025982.xls Jun 19, 2014 DEFA14A View HTML 0001144204-14-038405.xls Apr 3, 2015 PRE 14A View HTML 0001144204-15-021128.xls Apr 22, 2015 DEF 14A View HTML 0001144204-15-024301.xls Apr 1, 2016 PRE 14A View HTML 0001144204-16-092356.xls Apr 20, 2016 DEF 14A View HTML 0001144204-16-095156.xls Jul 7, 2016 DEFA14A View HTML 0001144204-16-111982.xls Apr 7, 2017 PRE 14A View HTML 0001144204-17-019593.xls Apr 26, 2017 DEF 14A View HTML 0001144204-17-022091.xls Jun 7, 2017 DEFA14A View HTML 0001144204-17-031570.xls Apr 9, 2018 PRE 14A View HTML 0001144204-18-019676.xls Apr 20, 2018 PRER14A View HTML 0001144204-18-021655.xls