$PTCT SEC Filings

Filing Filed On
CORRESP 19 Oct 2021
CORRESP 23 Sep 2021
CORRESP 09 Oct 2019
CORRESP 12 Feb 2016
CORRESP 21 Jan 2016
CORRESP 13 Jan 2016
CORRESP 16 Dec 2015
CORRESP 17 Jun 2013
CORRESP 17 Jun 2013