---
schema_version: "secwatch.filing_event.v1"
accession: "0000071829-25-000037"
form_type: "8-K"
ticker: "NPKI"
cik: "0000071829"
company_name: "NPK International Inc."
filed_at: "2025-05-01T23:59:59+00:00"
generated_at: "2026-05-23T01:25:48.632102+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# NPK International Q1 revenues +32% to $64.8M, Adj. EBITDA +59%, raises FY guidance

## Summary
- Revenue $64.8M (+32% YoY); diluted EPS $0.12 vs $0.05; Adj. EBITDA $19.7M (+59%); margin 30.4%.
- Record rental revenue driven by utility transmission demand; gross margin 39.0% (up 390 bps).
- Repurchased $11M of common stock (2% of shares outstanding); repurchase authorization increased to $100M.
- Full-year 2025 financial guidance raised; SG&A as % of revenue improved to 18.1% from 23.6%.
- Strong balance sheet: $20.8M cash, $8.1M debt, $66M available under ABL credit facility.

## SEC filing metadata
- accession: 0000071829-25-000037
- form_type: 8-K
- ticker: NPKI
- cik: 0000071829
- company_name: NPK International Inc.
- filed_at: 2025-05-01T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/71829/000007182925000037/0000071829-25-000037-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/71829/000007182925000037/nr-20250501.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000071829-25-000037
- JSON: https://secwatch.observer/filing/0000071829-25-000037.json
- Plain text: https://secwatch.observer/filing/0000071829-25-000037.txt

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