SEC Filings

Filing date	Form	Description	Filer	View
Dec 9, 2011	SC 13G	A statement of beneficial ownership of common stock by certain persons		View HTML 0001061768-11-000035.pdf 0001061768-11-000035.xls
Dec 10, 2008	SC 13G	A statement of beneficial ownership of common stock by certain persons	FMR LLC	View HTML 0000315066-08-004583.pdf
Feb 5, 2009	SC 13G	A statement of beneficial ownership of common stock by certain persons	BLACKROCK INSTITUTIONAL TRUST COMPANY, N.A.	View HTML 0000913414-09-004136.pdf
Jan 9, 2012	SC 13G	A statement of beneficial ownership of common stock by certain persons		View HTML 0001419078-12-000004.pdf
Feb 10, 2012	SC 13G	A statement of beneficial ownership of common stock by certain persons		View HTML 0000932471-12-003119.pdf 0000932471-12-003119.xls
Jan 4, 2013	SC 13G	A statement of beneficial ownership of common stock by certain persons		View HTML 0001416121-13-000001.pdf
Feb 13, 2015	SC 13G	A statement of beneficial ownership of common stock by certain persons		View HTML 0000807985-15-000017.pdf
Feb 14, 2019	SC 13G	A statement of beneficial ownership of common stock by certain persons		View HTML 0000929638-19-000244.pdf 0000929638-19-000244.xls
Apr 24, 2019	SC 13G	A statement of beneficial ownership of common stock by certain persons		View HTML 0001546190-19-000010.pdf
Mar 17, 2020	SC 13G	A statement of beneficial ownership of common stock by certain persons		View HTML 0001546190-20-000014.pdf