---
schema_version: "secwatch.filing_event.v1"
accession: "0000071829-25-000143"
form_type: "8-K"
ticker: "NPKI"
cik: "0000071829"
company_name: "NPK International Inc."
filed_at: "2025-11-24T23:59:59+00:00"
generated_at: "2026-05-16T17:26:53.360703+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# NPK acquires Grassform Plant Hire for £35.2M ($46.4M) cash; strengthens UK rental ops

## Summary
- Acquired Grassform Plant Hire for £35.2M ($46.4M) cash at closing, plus potential earn-out based on trailing 12-month performance to Feb 28, 2026.
- Funding from cash on hand and ~$10M draw on US credit facility; limited post-transaction debt.
- Grassform generated £15M ($19M) revenue and £6M ($8M) EBITDA for 12 months ended Oct 31, 2025.
- Grassform is a UK market leader in ground protection and temporary roadway solutions with over 20,000 composite mats.
- CEO Matt Lanigan says acquisition expands UK market coverage, aligns with growth strategy of scaling high-return rental business.

## SEC filing metadata
- accession: 0000071829-25-000143
- form_type: 8-K
- ticker: NPKI
- cik: 0000071829
- company_name: NPK International Inc.
- filed_at: 2025-11-24T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 2.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/71829/000007182925000143/0000071829-25-000143-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/71829/000007182925000143/nr-20251124.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000071829-25-000143
- JSON: https://secwatch.observer/filing/0000071829-25-000143.json
- Plain text: https://secwatch.observer/filing/0000071829-25-000143.txt

## Source-grounded claims
- claim_id: ed891dd58891ef428c6c8c049b0a5a04727b39a4
  claim: NPK International Inc. completed an acquisition involving shareholders of Grassform for £35.2 ($46.4) million satisfied in cash at closing (closed 2025-11-24).
  evidence_excerpt: of Grassform (the “Sellers”). Under the terms of the Share Purchase Agreement, the total consideration payable by NPK Holdings to the Sellers consisted of a payment of £35.2 ($46.4) million satisfied in cash at closing, subject to customary post-closing adjustments pursuant to completion accounts and certain other adjustment mechanisms. Additional
  evidence_url: https://www.sec.gov/Archives/edgar/data/71829/000007182925000143/0000071829-25-000143-index.htm

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