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 CIK#: 0001001385 (see all company filings)

SIC: 3317 - STEEL PIPE & TUBES
State location: WA | State of Inc.: OR | Fiscal Year End: 1231
(CF Office: 04 Manufacturing)
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Items 1 - 100  0001001385 Filings RSS Feed
Filings Format Description Filed/Effective File/Film Number
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-25-014085 (34 Act)  Size: 4 MB
2025-05-01 000-27140
25902909
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-25-013862 (34 Act)  Size: 411 KB
2025-04-30 000-27140
25895677
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000906304-25-000110 (34 Act)  Size: 10 KB
2025-04-30 005-44989
25892534
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001437749-25-012966 (34 Act)  Size: 5 MB
2025-04-24 000-27140
25867400
8-K  Documents   Interactive Data Current report, items 5.02, 8.01, and 9.01
Acc-no: 0001437749-25-010677 (34 Act)  Size: 299 KB
2025-04-02 000-27140
25804504
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010640 Size: 19 KB
2025-04-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010633 Size: 19 KB
2025-04-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010630 Size: 19 KB
2025-04-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010627 Size: 20 KB
2025-04-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010623 Size: 19 KB
2025-04-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010617 Size: 19 KB
2025-04-02
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010121 Size: 8 KB
2025-03-31
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010112 Size: 8 KB
2025-03-31
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010102 Size: 8 KB
2025-03-31
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010094 Size: 8 KB
2025-03-31
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010089 Size: 8 KB
2025-03-31
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-010085 Size: 8 KB
2025-03-31
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-009146 Size: 7 KB
2025-03-25
144  Documents Report of proposed sale of securities
Acc-no: 0001950047-25-002143 (33 Act)  Size: 4 KB
2025-03-24 000-27140
25764418
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001437749-25-005465 (34 Act)  Size: 11 MB
2025-02-27 000-27140
25678770
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-25-005233 (34 Act)  Size: 439 KB
2025-02-26 000-27140
25670306
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-003728 Size: 7 KB
2025-02-13
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0002012383-25-001315 (34 Act)  Size: 11 KB
2025-02-05 005-44989
25592321
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-001409 Size: 19 KB
2025-01-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-001404 Size: 19 KB
2025-01-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-001402 Size: 19 KB
2025-01-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-001400 Size: 20 KB
2025-01-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-001397 Size: 19 KB
2025-01-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-25-001395 Size: 19 KB
2025-01-17
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001437749-24-037585 (34 Act)  Size: 157 KB
2024-12-16 000-27140
241551833
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-037420 Size: 7 KB
2024-12-13
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-037024 Size: 7 KB
2024-12-09
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-035840 Size: 8 KB
2024-11-20
144  Documents Report of proposed sale of securities
Acc-no: 0001950047-24-008759 (33 Act)  Size: 4 KB
2024-11-18 000-27140
241472398
SC 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001140361-24-046840 (34 Act)  Size: 56 KB
2024-11-14 005-44989
241460379
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000932471-24-001186 (34 Act)  Size: 6 KB
2024-11-12 005-44989
241449499
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000932471-24-000598 (34 Act)  Size: 5 KB
2024-11-04 005-44989
241422181
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-24-032788 (34 Act)  Size: 6 MB
2024-10-31 000-27140
241415242
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-24-032629 (34 Act)  Size: 411 KB
2024-10-30 000-27140
241410649
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000906304-24-000116 (34 Act)  Size: 11 KB
2024-10-17 005-44989
241376657
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000906304-24-000115 (34 Act)  Size: 10 KB
2024-10-17 005-44989
241376651
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-031345 Size: 7 KB
2024-10-16
144  Documents Report of proposed sale of securities
Acc-no: 0001969171-24-000040 (33 Act)  Size: 5 KB
2024-10-15 000-27140
241370746
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-029355 Size: 7 KB
2024-09-17
144  Documents Report of proposed sale of securities
Acc-no: 0001969171-24-000039 (33 Act)  Size: 6 KB
2024-09-16 000-27140
241300664
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-028663 Size: 8 KB
2024-09-06
144  Documents Report of proposed sale of securities
Acc-no: 0001957799-24-000220 (33 Act)  Size: 5 KB
2024-09-04 000-27140
241277810
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-24-024287 (34 Act)  Size: 6 MB
2024-08-01 000-27140
241166479
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-24-024113 (34 Act)  Size: 412 KB
2024-07-31 000-27140
241162335
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-020500 Size: 4 KB
2024-06-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-020498 Size: 4 KB
2024-06-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-020496 Size: 4 KB
2024-06-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-020493 Size: 4 KB
2024-06-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-020491 Size: 4 KB
2024-06-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-020488 Size: 4 KB
2024-06-17
8-K  Documents   Interactive Data Current report, items 5.07 and 9.01
Acc-no: 0001437749-24-020332 (34 Act)  Size: 172 KB
2024-06-14 000-27140
241044752
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0001437749-24-020141 (34 Act)  Size: 2 MB
2024-06-13 000-27140
241040126
SD  Documents Specialized disclosure report
Acc-no: 0001437749-24-018899 (34 Act)  Size: 18 KB
2024-05-31 000-27140
241009693
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-24-005804 Size: 39 KB
2024-05-20 000-27140
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001437749-24-017357 Size: 46 KB
2024-05-16
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-24-005190 Size: 42 KB
2024-05-07 000-27140
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-24-014358 (34 Act)  Size: 5 MB
2024-05-02 000-27140
24908094
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-24-014177 (34 Act)  Size: 370 KB
2024-05-01 000-27140
24903454
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001437749-24-013214 (34 Act)  Size: 6 MB
2024-04-25 000-27140
24876112
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010905 Size: 19 KB
2024-04-03
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010903 Size: 19 KB
2024-04-03
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010901 Size: 19 KB
2024-04-03
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010896 Size: 19 KB
2024-04-03
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010893 Size: 19 KB
2024-04-03
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010891 Size: 19 KB
2024-04-03
8-K  Documents   Interactive Data Current report, items 5.02, 8.01, and 9.01
Acc-no: 0001437749-24-010867 (34 Act)  Size: 291 KB
2024-04-03 000-27140
24818604
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010205 Size: 8 KB
2024-04-01
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010203 Size: 8 KB
2024-04-01
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010201 Size: 8 KB
2024-04-01
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010199 Size: 8 KB
2024-04-01
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010197 Size: 8 KB
2024-04-01
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-010195 Size: 8 KB
2024-04-01
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001437749-24-006640 (34 Act)  Size: 10 MB
2024-03-05 000-27140
24721247
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-24-006438 (34 Act)  Size: 428 KB
2024-03-04 000-27140
24715730
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000354204-24-003269 (34 Act)  Size: 19 KB
2024-02-09 005-44989
24612506
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000906304-24-000033 (34 Act)  Size: 11 KB
2024-01-24 005-44989
24555526
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001086364-24-001692 (34 Act)  Size: 13 KB
2024-01-23 005-44989
24552689
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-001550 Size: 19 KB
2024-01-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-001547 Size: 19 KB
2024-01-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-001545 Size: 19 KB
2024-01-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-001543 Size: 19 KB
2024-01-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-001541 Size: 19 KB
2024-01-17
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-24-001538 Size: 19 KB
2024-01-17
8-K  Documents   Interactive Data Current report, items 5.02, 5.03, and 9.01
Acc-no: 0001437749-23-034919 (34 Act)  Size: 356 KB
2023-12-19 000-27140
231498267
EFFECT  Documents Notice of Effectiveness
Acc-no: 9999999995-23-003539 (33 Act)  Size: 1 KB
2023-12-04 16:30:00 333-275691
231465108
CORRESP  Documents [Cover]Correspondence
Acc-no: 0001437749-23-033169 Size: 7 KB
2023-11-29
UPLOAD  Documents [Cover]SEC-generated letter
Acc-no: 0000000000-23-012925 Size: 40 KB
2023-11-28
S-3  Documents Registration statement under Securities Act of 1933
Acc-no: 0001437749-23-032780 (33 Act)  Size: 826 KB
2023-11-21 333-275691
231428777
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-23-030219 (34 Act)  Size: 5 MB
2023-11-03 000-27140
231376368
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-23-030015 (34 Act)  Size: 387 KB
2023-11-02 000-27140
231372618
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-23-021918 (34 Act)  Size: 5 MB
2023-08-03 000-27140
231139753
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-23-021664 (34 Act)  Size: 342 KB
2023-08-02 000-27140
231135989
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001306550-23-009531 (34 Act)  Size: 13 KB
2023-07-07 005-44989
231077261
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, and 9.01
Acc-no: 0001437749-23-019231 (34 Act)  Size: 1 MB
2023-07-03 000-27140
231065412
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001437749-23-018379 Size: 4 KB
2023-06-26