$HSDT 4/A SEC Filings

10-12G 10-12G/A 10-K 10-K/A 10-KT 10-Q 10-Q/A 3 3/A 4 424B3 424B4 424B5 424B7 4/A 8-A12B 8-A12G 8-K 8-K/A ARS CERT CORRESP CT ORDER D DEF 14A DEFA14A DRS DRSLTR EFFECT NT 10-K NT 10-Q POS AM POSASR PRE 14A RW S-1 S-1/A S-1MEF S-3 S-3/A S-3ASR S-8 SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13D SCHEDULE 13D/A SCHEDULE 13G SCHEDULE 13G/A SC TO-I SC TO-I/A SD UPLOAD