NPK International Inc.

SEC insider activity covers quarterly filings through June 30, 2026. Later filings are not included. Reported roles do not establish current employment or current holdings. SEC filing documents, sections and filing-text search cover filings dated January 1, 2000 onward. Earlier filings are deferred until after launch.

NPKI

organization

SIC: 7350

SEC Insider

$63.5M

1,558 transactions

Summary

NPK International Inc. (NPKI) is an organization.

Recent Insider Transactions

As filed, including amendments; not net cash flow or current holdings. Joint reports count once. Totals cover known values only.

Buys: $2.4MSales: $28.4M38 insiders

Date	Insider	Type	Value
2026-06-03	LANIGAN MATTHEW(President & CEO)	Sell	$2.4M
2026-06-01	LANIGAN MATTHEW(President & CEO)	F	$564K
2026-06-01	LANIGAN MATTHEW(President & CEO)	F	$399K
2026-06-01	LANIGAN MATTHEW(President & CEO)	F	$318K
2026-06-01	Piontek Gregg(Senior Vice President and CFO)	F	$227K
2026-06-01	Piontek Gregg(Senior Vice President and CFO)	F	$161K
2026-06-02	Briggs Lori(VP & President, Ind. Solutions)	Sell	$152K
2026-06-01	Briggs Lori(VP & President, Ind. Solutions)	F	$137K
2026-06-01	Piontek Gregg(Senior Vice President and CFO)	F	$128K
2026-06-08	Briggs Lori(VP & President, Ind. Solutions)	Sell	$123K
2026-06-01	Briggs Lori(VP & President, Ind. Solutions)	F	$97K
2026-06-01	Briggs Lori(VP & President, Ind. Solutions)	F	$77K
2026-06-01	Fruge Mary Celeste(VP, General Counsel)	F	$55K
2026-06-01	Piontek Gregg(Senior Vice President and CFO)	M	$0
2026-06-01	Piontek Gregg(Senior Vice President and CFO)	M	$0
2026-06-01	LANIGAN MATTHEW(President & CEO)	M	$0
2026-06-01	LANIGAN MATTHEW(President & CEO)	M	$0
2026-06-01	Briggs Lori(VP & President, Ind. Solutions)	M	$0
2026-06-01	Briggs Lori(VP & President, Ind. Solutions)	M	$0
2026-06-01	Fruge Mary Celeste(VP, General Counsel)	M	$0

SEC filings: SEC EDGAR

Activity data: SEC EDGAR

NPK International Inc. — Contributions, Lobbying & Contracts | Poliscope