$PRTA SEC Filings

Filing Filed On
CORRESP 04 Aug 2023
CORRESP 10 Dec 2019
CORRESP 26 Jun 2019
CORRESP 18 Jun 2019
CORRESP 07 Jun 2019
CORRESP 17 Apr 2019
CORRESP 28 Feb 2019
CORRESP 22 Jan 2019
CORRESP 03 Jan 2019
CORRESP 17 Dec 2012