$NPKI

NPK International Inc. (NPKI) filed an SEC Form 8-K — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers. NPK ANNOUNCES NEW EXECUTIVE VICE PRESIDENT, COMMERCIAL GROWTH & OPERATIONS THE WOODLANDS, TEXAS – September 14, 2026 – NPK International Inc. (NYSE: NPKI) (“NPK” or the “Company”) today announced the appointment of James “JJ” Barton as Executive Vice President, Commercial Growth

NPK International Inc. (NPKI) filed an SEC Form 8-K — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers. NPK ANNOUNCES CHIEF FINANCIAL OFFICER RETIREMENT, INITIATES FINANCE LEADERSHIP SUCCESSION PLAN THE WOODLANDS, TEXAS – September 2, 2026 – NPK International Inc. (NYSE: NPKI) (“NPK” or the “Company”) today announced that after nearly 20 years of service to the Company, Gregg Piont

NPK International (NYSE:NPKI) reported Q2 gross margin of 37%, up 80 bps sequentially and in line with the prior year, citing stronger product sales and stable rental margins. It narrowed 2026 revenue guidance to $313M-$323M and raised adjusted EBITDA to $97M-$103M. Management expects Q3 rental and service revenue roughly flat sequentially and product sales to normalize after a strong Q2.

Release Date: July 30, 2026 For the complete transcript of the earnings call, please refer to the full earnings call transcript. Positive Points Revenue increased 20% year-over-year to $82 million, driven by strong growth in both product sales and rentals. Adjusted EBITDA improved 37% year-over-year to $26 million, with a margin of 31.5%. Rental and service revenues hit a quarterly record of $54 million, up 16% year-over-year.

NPK International Inc. (NPKI) filed an SEC Form 8-K — Results of Operations and Financial Condition. Exhibit 99.1 NPK REPORTS SECOND QUARTER 2026 RESULTS Company reports $82 million revenues, $0.14 diluted EPS; Raises full-year earnings guidance THE WOODLANDS, TEXAS – July 29, 2026 – NPK International Inc. (NYSE: NPKI) (“NPK” or the “Company”) today announced results for the thr

NPK International Inc. (NPKI) filed an SEC Form 8-K — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers. nr-20260728 0000071829 false 0000071829 2026-07-28 2026-07-28 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): J

NPK International said in an SEC Form 4 that CEO Matthew Lanighan sold 167,375 shares for about $2.42 million at a weighted-average price of $14.43. The sale was executed under a Rule 10b5-1 plan adopted March 4, 2026. Direct holdings fell about 40% to 254,699 shares, while indirect trust holdings stayed at 770,249, leaving total beneficial shares near 1.02 million (0.30%).

LANIGAN MATTHEW (President & CEO) sold 167,375 shares of NPK International Inc. (NPKI) at $14.43 ($2.42M total) on 2026-06-03 under a Rule 10b5-1 trading plan.

Briggs Lori (VP & President, Ind. Solutions) sold 10,446 shares of NPK International Inc. (NPKI) at $14.58 ($0.15M total) on 2026-06-02 under a Rule 10b5-1 trading plan.