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NPK International Inc.

For the period ended Dec 31, 2025. Filed Feb 27, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 27, 2026

NPKI$8.92+3.2%Stored close · as of Nov 9, 2026

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ITEM 9B. Other Information

Insider Trading Arrangements

During the quarter ended December 31, 2025, no director or officer of the Company adopted orterminated any Rule 10b5-1 trading arrangement or non-Rule 10b5-1 trading arrangement, as each term is defined in Item 408(a) of Regulation S-K, except as follows:

On December 3, 2025, Gregg Piontek, our Chief Financial Officer, adopted a written plan for the sale of 173,590 shares. The plan is scheduled to commence on March 4, 2026 and to expire on July 31, 2026. On December 5, 2025, Celeste Frugé, our General Counsel, Chief Compliance Officer and Corporate Secretary, adopted a written plan for the sale of 12,193 shares, and the plan is scheduled to commence on March 6, 2026 and to expire on May 19, 2026. Finally, on December 15, 2025, Lori Briggs, our Executive Vice President of Business Operations, adopted a written plan for the sale of 30,948 shares, and the plan is scheduled to commence on May 20, 2026 and to expire on June 30, 2026. Each of the plans may expire on any earlier date on which all of the shares have been sold. The plans are intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act.

ITEM 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.