QUANTUM CORP /DE/ — SCHEDULE 13D Filings

All 10-K 10-K/A 10-K405 10-Q 10-Q/A 144 15-12G 25-NSE 3 3/A 4 4/A 424B2 424B3 424B5 425 5 8-A12B 8-A12G 8-K 8-K/A ARS AW CERT CORRESP D DEF 14A DEF 14C DEFA14A DEFC14A DEFR14A DFAN14A EFFECT NT 10-K NT 10-Q POS AM PRE 14A PRE 14C PREC14A PRER14A PRRN14A RW 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 SC TO-I SC TO-I/A SCHEDULE 13D SCHEDULE 13D/A SCHEDULE 13G/A SD SD/A UPLOAD