NPK International Inc.

NPK International Inc. Common Stock (NPKI) has no currently recruiting or active clinical trials where it is listed as lead sponsor on ClinicalTrials.gov.

NPKI has 4 Form 4 insider filings recorded at the SEC in the past 30 days[1].

Sources:
[1] SEC EDGAR, 0000071829. Source last updated 2026-04-11, retrieved 2026-04-11.
    https://efts.sec.gov/LATEST/search-index?q=%22NPKI%22&forms=4&dateRange=custom&startdt=2026-03-12&enddt=2026-04-11

<article class="bts-verified-summary" data-ticker="NPKI">
<p>NPK International Inc. Common Stock (NPKI) has no currently recruiting or active clinical trials where it is listed as lead sponsor on ClinicalTrials.gov.</p>
<p>NPKI has 4 Form 4 insider filings recorded at the SEC in the past 30 days<sup><a href="#fn-1">[1]</a></sup>.</p>
<section class="sources" data-nosnippet aria-label="Sources"><h3>Sources</h3><ol><li id="fn-1">SEC EDGAR · 0000071829 (2026-04-11) <a href="https://efts.sec.gov/LATEST/search-index?q=%22NPKI%22&amp;forms=4&amp;dateRange=custom&amp;startdt=2026-03-12&amp;enddt=2026-04-11" rel="nofollow noopener noreferrer">↗</a></li></ol></section>
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