42 filings
SD
MTRN
Materion Corp
30 May 24
Conflict minerals disclosure
4:25pm
SD
MTRN
Materion Corp
31 May 23
Conflict minerals disclosure
10:10am
SD
MTRN
Materion Corp
31 May 22
Conflict minerals disclosure
9:39am
UPLOAD
MTRN
Materion Corp
20 May 22
Letter from SEC
12:00am
CORRESP
MTRN
Materion Corp
10 May 22
Correspondence with SEC
12:00am
UPLOAD
zvoxg3uzhdj
26 Apr 22
Letter from SEC
12:00am
CORRESP
yylhc6t 372w
7 Apr 22
Correspondence with SEC
12:00am
CORRESP
izx qcvwkod6s
30 Mar 22
Correspondence with SEC
12:00am
UPLOAD
jh367r3r b9kfak789
21 Mar 22
Letter from SEC
12:00am
SD
kn38vtfy8mh4tit66q6m
28 May 21
Conflict minerals disclosure
8:13am
SD
p6uzdts le2a4tgy
29 May 20
Conflict minerals disclosure
8:09am
SD
gtrvk88gbyyf odnj7
31 May 19
Conflict minerals disclosure
11:56am
SD
sgq 0x6udb10
31 May 18
Conflict minerals disclosure
10:54am
SD
gp64ez
31 May 17
Conflict minerals disclosure
12:00am
SD
9nr6dlh0 zw7gi341sc6
27 May 16
Conflict minerals disclosure
12:00am
UPLOAD
jwi7t7dz1adp mmxlj36
2 Dec 15
Letter from SEC
12:00am
CORRESP
3nzw08zb
17 Nov 15
Correspondence with SEC
12:00am
UPLOAD
yab92
9 Nov 15
Letter from SEC
12:00am
SD
sf50hy6kce
1 Jun 15
Conflict minerals disclosure
12:00am
UPLOAD
pysbchbtmcu
10 Feb 15
Letter from SEC
12:00am