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
lwvz3ck
7 Apr 22
Correspondence with SEC
12:00am
CORRESP
iturd
30 Mar 22
Correspondence with SEC
12:00am
UPLOAD
bn0r86y jz4
21 Mar 22
Letter from SEC
12:00am
SD
tu60igyz
28 May 21
Conflict minerals disclosure
8:13am
SD
jpzc jal6dgaze31nzr
29 May 20
Conflict minerals disclosure
8:09am
SD
oasyq0q
31 May 19
Conflict minerals disclosure
11:56am
SD
0gafj 7qzvywilvgm71
31 May 18
Conflict minerals disclosure
10:54am
SD
i4654tz gb
31 May 17
Conflict minerals disclosure
12:00am
SD
5jr26dadomjg4hlby
27 May 16
Conflict minerals disclosure
12:00am
UPLOAD
kyt9iw 3v4xecqxkc
2 Dec 15
Letter from SEC
12:00am
CORRESP
meedhb9wiil5 8hyzyi
17 Nov 15
Correspondence with SEC
12:00am
UPLOAD
uuyprigddr0rxl vo
9 Nov 15
Letter from SEC
12:00am
SD
dwdydz
1 Jun 15
Conflict minerals disclosure
12:00am
UPLOAD
h37ot vqdklxis
10 Feb 15
Letter from SEC
12:00am
CORRESP
pfgirb6vvqsbh5sdq
15 Jan 15
Correspondence with SEC
12:00am