$NOV SC 13G/A SEC Filings

10-K 10-K405 10-K/A 10-Q 10-Q/A 11-K 144 144/A 3 3/A 4 424B1 424B3 424B5 425 4/A 5 8-A12B 8-K 8-K/A ARS CORRESP DEF 14A DEFA14A EFFECT FWP POS AM PRE 14A PX14A6G RW S-1 S-1/A S-3 S-3ASR S-4 S-4/A S-8 SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13G SCHEDULE 13G/A SC TO-I SC TO-I/A SD UPLOAD