Form 8-K - Current report:
SEC Accession No. 0001437749-25-019713
Filing Date
2025-06-06
Accepted
2025-06-06 16:02:54
Documents
14
Period of Report
2025-06-03
Items
Item 4.01: Changes in Registrant's Certifying Accountant
Item 9.01: Financial Statements and Exhibits

Document Format Files

Seq Description Document Type Size
1 FORM 8-K nwpx20250603_8k.htm   iXBRL 8-K 28334
2 EXHIBIT 16.1 ex_826802.htm EX-16.1 2657
  Complete submission text file 0001437749-25-019713.txt   162458

Data Files

Seq Description Document Type Size
3 XBRL TAXONOMY EXTENSION SCHEMA nwpx-20250603.xsd EX-101.SCH 3578
4 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE nwpx-20250603_def.xml EX-101.DEF 11423
5 XBRL TAXONOMY EXTENSION LABEL LINKBASE nwpx-20250603_lab.xml EX-101.LAB 15309
6 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE nwpx-20250603_pre.xml EX-101.PRE 11583
16 EXTRACTED XBRL INSTANCE DOCUMENT nwpx20250603_8k_htm.xml XML 2849
Mailing Address 201 NE PARK PLAZA DRIVE SUITE 100 VANCOUVER WA 98684
Business Address 201 NE PARK PLAZA DRIVE SUITE 100 VANCOUVER WA 98684 3603976250
NORTHWEST PIPE CO (Filer) CIK: 0001001385 (see all company filings)

EIN.: 930557988 | State of Incorp.: OR | Fiscal Year End: 1231
Type: 8-K | Act: 34 | File No.: 000-27140 | Film No.: 251030469
SIC: 3317 Steel Pipe & Tubes
(CF Office: 04 Manufacturing)