A provider of temporary worksite access, NPK International rents and sells its recyclable DURA-BASE composite mats—sturdy plastic roadways and platforms used by power transmission crews and other outdoor workers where the ground needs protection. The company began in 1932 as the New Park Mining Company, grew into oilfield services as Newpark Resources, and rebranded as NPK International in 2024. Its mats were the first engineered thermoplastic access system on the market, a recyclable alternative to traditional wood timbers.
Select a row to see that insider’s individual transactions. † Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -461.2K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.