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
1777key12 f1c4gq8r
7 Apr 22
Correspondence with SEC
12:00am
CORRESP
0bo3mqxd21qgay 4bgmf
30 Mar 22
Correspondence with SEC
12:00am
UPLOAD
4s9c3usg6pv6gl
21 Mar 22
Letter from SEC
12:00am
SD
75af0hb
28 May 21
Conflict minerals disclosure
8:13am
SD
lx1ub4l0xn3hy
29 May 20
Conflict minerals disclosure
8:09am
SD
s6f67 iyawnwhqy1i
31 May 19
Conflict minerals disclosure
11:56am
SD
euoohfebo gk
31 May 18
Conflict minerals disclosure
10:54am
SD
drgkuqny8p
31 May 17
Conflict minerals disclosure
12:00am
SD
8cfimzf2l0 eg7yks
27 May 16
Conflict minerals disclosure
12:00am
UPLOAD
hd2fha0n
2 Dec 15
Letter from SEC
12:00am
CORRESP
j2mgaw
17 Nov 15
Correspondence with SEC
12:00am
UPLOAD
k1ansi49
9 Nov 15
Letter from SEC
12:00am
SD
44ga2y w6v0
1 Jun 15
Conflict minerals disclosure
12:00am
UPLOAD
z3o fvsq9q0atz15w
10 Feb 15
Letter from SEC
12:00am
CORRESP
npwgea0eau4jj
15 Jan 15
Correspondence with SEC
12:00am