$OIS 8-K SEC Filings

10-K 10-K405 10-K/A 10-Q 10-Q/A 144 3 3/A 4 424B3 424B4 424B5 424B7 4/A 5 8-A12B 8-K 8-K/A ARS CERT CORRESP DEF 14A DEFA14A DEFR14A EFFECT IRANNOTICE POS AM PRE 14A S-1 S-1/A S-3 S-3/A S-3ASR S-4 S-4/A S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13G SCHEDULE 13G/A SC TO-I SC TO-I/A SD UPLOAD