Lewis Michael A - Insider Non-Derivative Transactions at NPK International Inc. (NPKI) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Nov 24, 2025, Lewis Michael A's relationship to NPK International Inc. (NPKI) is Director, and currently has 133,346 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other NPKI insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

Lewis Michael A - Insider Non-Derivative Transactions of NPKI Common Stock

Lewis Michael A - Insider Non-Derivative Transactions at NPKI

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Nov 25, 2025	Sell -- (Common Stock)	2013	12	133346
Aug 26, 2025	Sell -- (Common Stock)	2013	10.33	135359
Jun 17, 2025	Sell -- (Common Stock)	2013	8.6	137372
May 16, 2025	Acquisition -- (Common Stock)	15097	0	139385