NPK International Inc

NPKINASDAQ · US

Holders

ACQUIREDT+30
Barton III Alvin James
NPK International Inc · NASDAQ
+12,850 sh
Filed 24 Sept 2026SEC Form 4view source
REDUCEDStale
Warren Matthew James
NPK International Inc · NASDAQ
−2,991 sh · $40.1K
Filed 10 Sept 2026SEC Form 4view source
REDUCEDStale
Robeson Rose M
NPK International Inc · NASDAQ
−10,000 sh · $134.9K
Filed 31 Aug 2026SEC Form 4view source
REDUCEDStale
Lewis Michael A
NPK International Inc · NASDAQ
−2,013 sh · $28.7K
Filed 19 Aug 2026SEC Form 4view source
DISCLOSEDStale
Two Sigma Investments
NPK International Inc · NASDAQ
1,060,904 sh · $15.4M
Filed 31 Mar 2026SEC 13Fview source
DISCLOSEDStale
Renaissance Technologies
NPK International Inc · NASDAQ
362,167 sh · $5.2M
Filed 31 Mar 2026SEC 13Fview source
DISCLOSEDStale
BlackRock
NPK International Inc · NASDAQ
6,611,891 sh · $54.9M
Filed 30 Jun 2024SEC 13Fview source