41 filings
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
MTRN
Materion Corp
26 Apr 22
Letter from SEC
12:00am
CORRESP
135hjose09n5z
7 Apr 22
Correspondence with SEC
12:00am
CORRESP
8bt7k3 d0tdv1gyjw
30 Mar 22
Correspondence with SEC
12:00am
UPLOAD
n42ejirf
21 Mar 22
Letter from SEC
12:00am
SD
nedcy9d7al56psxut1te
28 May 21
Conflict minerals disclosure
8:13am
SD
hppg3q32
29 May 20
Conflict minerals disclosure
8:09am
SD
zkgciltk5073qelqt
31 May 19
Conflict minerals disclosure
11:56am
SD
c6405yl
31 May 18
Conflict minerals disclosure
10:54am
SD
orej3h
31 May 17
Conflict minerals disclosure
12:00am
SD
jfxzdtmyj1786gx8
27 May 16
Conflict minerals disclosure
12:00am
UPLOAD
sgrarmqa533 ys0dxf8d
2 Dec 15
Letter from SEC
12:00am
CORRESP
riisuo pyu3q3z
17 Nov 15
Correspondence with SEC
12:00am
UPLOAD
xv1o6
9 Nov 15
Letter from SEC
12:00am
SD
98xg8j0
1 Jun 15
Conflict minerals disclosure
12:00am
UPLOAD
enl5mt mr
10 Feb 15
Letter from SEC
12:00am
CORRESP
mddup8805 3uj58
15 Jan 15
Correspondence with SEC
12:00am