Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0001144204-17-008693
Filing Date
2017-02-14
Accepted
2017-02-14 15:24:31
Documents
1

Document Format Files

Seq Description Document Type Size
1 SC 13G/A v459205_sc13ga.htm SC 13G/A 52893
  Complete submission text file 0001144204-17-008693.txt   54371
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.: 17607854
SIC: 3317 Steel Pipe & Tubes

Mailing Address 222 WEST ADAMS STREET CHICAGO IL 60606
Business Address 222 WEST ADAMS STREET CHICAGO IL 60606 312-236-1600
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (Filed by) CIK: 0001644956 (see all company filings)

IRS No.: 472614791 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A