$MTX 4 SEC Filings

10-K 10-K/A 10-Q 10-Q/A 11-K 144 3 3/A 4 4/A 5 8-A12B 8-K 8-K/A ARS CORRESP DEF 14A DEFA14A NO ACT PX14A6G S-8 S-8 POS SC 13G SC 13G/A SCHEDULE 13G SCHEDULE 13G/A SC TO-C SC TO-T SC TO-T/A SD UPLOAD