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NPK International Inc.

For the period ended Sep 30, 2026. Filed Oct 30, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Oct 30, 2026

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

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ITEM 5. Other Information

Insider Trading Arrangements

During the quarter ended September 30, 2026, 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 August 6, 2026, Lori Briggs, the Company’sformer Executive Vice President, Business Operations, adopted a written trading arrangement for the sale of shares intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). In connection with her departure from the Company, Ms. Briggs terminated the 10b5-1 trading arrangement on September 14, 2026. This trading arrangement was subject to a 90-day “cooling off” period before any trades could be conducted thereunder, would have expired on June 30, 2027 and provided for the sale of an undetermined number of shares of our common stock. No sales occurred under the plan.

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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.