$AMPH SEC Filings

Filing Filed On
SC 13G/A 24 Jan 2019
SC 13G/A 09 Feb 2018
SC 13G/A 19 Jan 2018
SC 13G AMENDMENT NO. 2 13 Feb 2017
SC 13G AMENDMENT NO. 1 16 Feb 2016
SC 13G/A 17 Feb 2015