Issuer · CIK 0000071829
NPKI — NPK International Inc.
⚡ SELL CLUSTER · last 7 days
2 insiders sold $NPKI between Jun 3, 2026 and Jun 9, 2026.
Cluster patterns historically carry stronger directional signal than any single insider trade. Upgrade to Pro to see the cluster total and per-insider dollar amounts. Read the methodology →
Briggs Lori
VP & President, Ind. Solutions
$•••
Jun 9, 2026
LANIGAN MATTHEW
President & CEO
$•••
Jun 5, 2026
Briggs Lori
VP & President, Ind. Solutions
$•••
Jun 3, 2026
Recent filings
- Jun 9, 2026·Form 4·Pro · in 12h 54m$•••K
NPKI/NPK International Inc.
Briggs Lori · VP & President, Ind. Solutions
Proonly - Jun 5, 2026·Form 4·Sell$2.4M
NPKI/NPK International Inc.
LANIGAN MATTHEW · President & CEO
52conviction - Jun 3, 2026·Form 4·Other$97.3K
NPKI/NPK International Inc.
Fruge Mary Celeste · VP, General Counsel
Mechanical filing
AI thesis skipped - Jun 3, 2026·Form 4·Other$564.1K
NPKI/NPK International Inc.
LANIGAN MATTHEW · President & CEO
Mechanical filing
AI thesis skipped - Jun 3, 2026·Form 4·Other$227.4K
NPKI/NPK International Inc.
Piontek Gregg · Senior Vice President and CFO
Mechanical filing
AI thesis skipped - Jun 3, 2026·Form 4·Sell$152.3K
NPKI/NPK International Inc.
Briggs Lori · VP & President, Ind. Solutions
Mechanical filing
AI thesis skipped - May 21, 2026·Form 4·Other$0
NPKI/NPK International Inc.
ROBESON ROSE M · director
Mechanical filing
AI thesis skipped - May 21, 2026·Form 4·Other$0
NPKI/NPK International Inc.
MINGE JOHN C · director
Mechanical filing
AI thesis skipped - May 21, 2026·Form 4·Other$0
NPKI/NPK International Inc.
Meer Claudia Michel · director
Mechanical filing
AI thesis skipped - May 21, 2026·Form 4·Other$0
NPKI/NPK International Inc.
Lewis Michael A · director
Mechanical filing
AI thesis skipped - May 21, 2026·Form 4·Other$0
NPKI/NPK International Inc.
LARSON RODERICK A. · director
Mechanical filing
AI thesis skipped - May 21, 2026·Form 4·Other$0
NPKI/NPK International Inc.
CUTILLO JOSEPH A · director
Mechanical filing
AI thesis skipped - May 21, 2026·Form 4·Other$0
NPKI/NPK International Inc.
Piontek Gregg · Senior Vice President and CFO
Mechanical filing
AI thesis skipped - May 21, 2026·Form 4·Other$0
NPKI/NPK International Inc.
LANIGAN MATTHEW · President & CEO
Mechanical filing
AI thesis skipped - May 21, 2026·Form 4·Other$0
NPKI/NPK International Inc.
Fruge Mary Celeste · VP, General Counsel
Mechanical filing
AI thesis skipped - May 21, 2026·Form 4·Other$0
NPKI/NPK International Inc.
Briggs Lori · VP & President, Ind. Solutions
Mechanical filing
AI thesis skipped - May 19, 2026·Form 4·Sell$30.8K
NPKI/NPK International Inc.
Lewis Michael A · director
Mechanical filing
AI thesis skipped