$PERI 6-K SEC Filings

144 144/A 20-F 20-F/A 3 4 424B1 424B2 424B5 4/A 6-K 6-K/A 8-A12B 8-A12G CORRESP CT ORDER D EFFECT F-1 F-1/A F-3 F-3/A F-3ASR F-3MEF FWP POS AM RW S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13D SCHEDULE 13D/A SCHEDULE 13G SCHEDULE 13G/A UPLOAD