$MAT SEC Filings

Filing Filed On
FORM 3 21 May 2018
FORM 4 21 May 2018
FORM 4 21 May 2018
FORM 3 21 May 2018
FORM 4 21 May 2018
FORM 4 21 May 2018
FORM 4 21 May 2018
FORM 4 21 May 2018
SCHEDULE 13G AMENDMENT NO. 1 10 May 2018
DEFINITIVE ADDITIONAL MATERIALS 08 May 2018
FORM 4 07 May 2018
8-K 07 May 2018
DEFA14A 07 May 2018
8-K 26 Apr 2018
10-Q 26 Apr 2018
DEFA14A 24 Apr 2018
8-K 20 Apr 2018
FORM 4 17 Apr 2018
DEF 14A 05 Apr 2018
DEFA14A 05 Apr 2018