$MAT SEC Filings

Filing Filed On
DEFA14A 17 Apr 2024
DEFA14A 31 Mar 2023
DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS 12 Apr 2022
DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS 13 Apr 2021
DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS 27 Apr 2020
DEFA14A 02 May 2019
DEFA14A 04 Apr 2019
DEFINITIVE ADDITIONAL MATERIALS 08 May 2018
DEFA14A 07 May 2018
DEFA14A 24 Apr 2018
DEFA14A 05 Apr 2018
DEFINITIVE ADDITIONAL MATERIALS 08 May 2017
DEFA14A 05 Apr 2017
DEFA14A 26 Apr 2016
DEFA14A 05 Apr 2016
DEFA14A 13 May 2015
DEFA14A 09 Apr 2015
DEFA14A 02 Apr 2014
DEFA14A 26 Mar 2013
DEFINITIVE ADDITIONAL MATERIALS 28 Mar 2012