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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001172661-11-000152
Filing Date
2011-02-14
Accepted
2011-02-14 10:04:19
Documents
1

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13G HOLDINGS REPORT AMENDMENT nwpx123110a2.txt SC 13G/A 5645
  Complete submission text file 0001172661-11-000152.txt   7860
Mailing Address 301 BATTERY STREET SUITE 400 SAN FRANCISCO CA 94111
Business Address 301 BATTERY STREET SUITE 400 SAN FRANCISCO CA 94111 4159816911
WENTWORTH HAUSER & VIOLICH (Filed by) CIK: 0000105692 (see all company filings)

IRS No.: 911631301 | State of Incorp.: WA | Fiscal Year End: 1231
Type: SC 13G/A

Mailing Address 5721 SE COLUMBIA WAY SUITE 200 VANCOUVER WA 98661
Business Address 5721 SE COLUMBIA WAY SUITE 200 VANCOUVER WA 98661 3603976250
NORTHWEST PIPE CO (Subject) CIK: 0001001385 (see all company filings)

IRS No.: 930557988 | State of Incorp.: OR | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-44989 | Film No.: 11602674
SIC: 3317 Steel Pipe & Tubes