# Filing Detail

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0000071829-26-000009
Filing Date
2026-02-27
Accepted
2026-02-27 14:32:05
Documents
113
Period of Report
2025-12-31

Document Format Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
1 | 10-K | nr-20251231.htm iXBRL | 10-K | 1719797
2 | EX-10.13 | a2025q410kexhibit1013.htm | EX-10.13 | 57117
3 | EX-10.15 | a2025q410kexhibit1015.htm | EX-10.15 | 10764
4 | EX-10.30 | a2025q410kexhibit1030.htm | EX-10.30 | 108882
5 | EX-10.31 | a2025q410kexhibit1031.htm | EX-10.31 | 117811
6 | EX-21.1 | a2025q410kexhibit211.htm | EX-21.1 | 9423
7 | EX-23.1 | a2025q410kexhibit231.htm | EX-23.1 | 2366
8 | EX-31.1 | a2025q410kexhibit311.htm | EX-31.1 | 9885
9 | EX-31.2 | a2025q410kexhibit312.htm | EX-31.2 | 10172
10 | EX-32.1 | a2025q410kexhibit321.htm | EX-32.1 | 4617
11 | EX-32.2 | a2025q410kexhibit322.htm | EX-32.2 | 4579
17 |  | nr-20251231_g1.jpg | GRAPHIC | 6518
18 |  | nr-20251231_g2.jpg | GRAPHIC | 117573
| Complete submission text file | 0000071829-26-000009.txt |  | 11623994

Data Files

Seq | Description | Document | Type | Size
--- | --- | --- | --- | ---
12 | XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT | nr-20251231.xsd | EX-101.SCH | 69845
13 | XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT | nr-20251231_cal.xml | EX-101.CAL | 185042
14 | XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT | nr-20251231_def.xml | EX-101.DEF | 388967
15 | XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT | nr-20251231_lab.xml | EX-101.LAB | 965758
16 | XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT | nr-20251231_pre.xml | EX-101.PRE | 715297
116 | EXTRACTED XBRL INSTANCE DOCUMENT | nr-20251231_htm.xml | XML | 1654313

Mailing Address 9320 LAKESIDE BOULEVARD SUITE 100 THE WOODLANDS TX 77381
Business Address 9320 LAKESIDE BOULEVARD SUITE 100 THE WOODLANDS TX 77381 281-362-6800
NPK International Inc. (Filer) CIK: 0000071829 (see all company filings)

EIN.: 721123385 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-02960 | Film No.: 26698077
SIC: 7350 Services-Miscellaneous Equipment Rental & Leasing
(CF Office: 07 Trade & Services)