---
schema_version: "secwatch.filing_event.v1"
accession: "0000071829-26-000026"
form_type: "8-K"
ticker: "NPKI"
cik: "0000071829"
company_name: "NPK International Inc."
filed_at: "2026-04-30T23:59:59+00:00"
generated_at: "2026-05-15T01:19:22.822586+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# NPK Q1 revenues rise 16% to $75.1M, raises full-year guidance; plans 50% mfg capacity expansion

## Summary
- Revenue $75.1M (+16% YoY); diluted EPS $0.12; adjusted EBITDA $22.5M (+14%); adj. EBITDA margin 29.9%.
- Rental & service revenue $52M (+20%); product sales $23M (+8%).
- Board approved ~50% manufacturing capacity expansion; $40-45M investment, online by mid-2027.
- Operating cash flow $21.1M; net debt $4.1M; $148M revolver available; $2.7M shares repurchased.
- Full-year 2026 guidance raised on Q1 strength and power transmission spending outlook.

## SEC filing metadata
- accession: 0000071829-26-000026
- form_type: 8-K
- ticker: NPKI
- cik: 0000071829
- company_name: NPK International Inc.
- filed_at: 2026-04-30T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/71829/000007182926000026/0000071829-26-000026-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/71829/000007182926000026/nr-20260430.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000071829-26-000026
- JSON: https://secwatch.observer/filing/0000071829-26-000026.json
- Plain text: https://secwatch.observer/filing/0000071829-26-000026.txt

## Key facts
- Earnings Releases
  NPK International Inc. reported the three months ended March 31, 2026 results: revenue $75.1 million, net income $10.4 million, EPS $0.12 per diluted share. Guidance raised.
  - Period: the three months ended March 31, 2026
  - Revenue: $75.1 million
  - Net income: $10.4 million
  - EPS: $0.12 per diluted share
  - Guidance: raised
  - Result: reported results
  source text: of each non-GAAP financial measure are included in the attached Exhibit 99.1. --- EX-99.1 (EX-99.1) --- NPK REPORTS FIRST QUARTER 2026 RESULTS Company reports revenues of $75 million, diluted EPS of $0.12; Raises full-year guidance THE WOODLANDS, TEXAS – April 30, 2026 – NPK International Inc. (NYSE: NPKI) (“NPK” or the “Company”) today announced results for
  evidence_url: https://www.sec.gov/Archives/edgar/data/71829/000007182926000026/0000071829-26-000026-index.htm
- Earnings Releases
  NPK International Inc. reported the first quarter ended March 31, 2026 results: revenue $75.1 million, net income $10.4 million, EPS $0.12 per diluted share. Guidance raised.
  - Period: the first quarter ended March 31, 2026
  - Revenue: $75.1 million
  - Net income: $10.4 million
  - EPS: $0.12 per diluted share
  - Guidance: raised
  - Result: reported results
  source text: NPK REPORTS FIRST QUARTER 2026 RESULTS Company reports revenues of $75 million, diluted EPS of $0.12; Raises full-year guidance
  evidence_url: https://www.sec.gov/Archives/edgar/data/71829/000007182926000026/0000071829-26-000026-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.