Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000937394-13-000047
Filing Date
2013-02-07
Accepted
2013-02-07 14:40:35
Documents
1

Document Format Files

Seq Description Document Type Size
1 mtrn_1.txt SC 13G/A 9765
  Complete submission text file 0000937394-13-000047.txt   11262
Mailing Address 789 N WATER STREET MILWAUKEE WI 53202
Business Address 789 N WATER STREET MILWAUKEE WI 53202 414-347-7777
HEARTLAND ADVISORS INC (Filed by) CIK: 0000937394 (see all company filings)

EIN.: 391078128 | State of Incorp.: WI | Fiscal Year End: 1231
Type: SC 13G/A

Mailing Address 6070 PARKLAND BLVD. MAYFIELD HTS. OH 44124
Business Address 6070 PARKLAND BLVD. MAYFIELD HTS. OH 44124 2163834931
MATERION Corp (Subject) CIK: 0001104657 (see all company filings)

EIN.: 341919973 | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-60271 | Film No.: 13581753
SIC: 3460 Metal Forgings & Stampings