$EXTR 8-K SEC Filings

10-K 10-K/A 10-Q 10-Q/A 144 3 3/A 4 424B1 424B3 424B4 4/A 5 8-A12B 8-A12B/A 8-A12G 8-A12G/A 8-K 8-K/A ARS CORRESP DEF 14A DEFA14A DEFR14A DFAN14A EFFECT NO ACT NT 10-K NT 10-Q POS AM PRE 14A PRER14A S-1 S-1/A S-3 S-3/A S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13G SCHEDULE 13G/A SC TO-C SC TO-I SC TO-I/A SC TO-T SC TO-T/A SD UPLOAD