NPK International Inc.

NPKI·NYSE·$15.95Share Price as of 11/2·$1BMarket Cap as of 11/2

Financials

10-QQ3 ended 09/30/2610/30/26 10-QQ2 ended 06/30/2607/30/26 10-QQ1 ended 03/31/2605/01/26 10-KFY 202502/27/26 10-QQ3 ended 09/30/2510/31/25

Disclosures

8-KCurrent report10/30/26 8-KCurrent report10/29/26 8-KCurrent report09/14/26 8-KCurrent report09/02/26 8-KCurrent report07/30/26

Prospectuses and Registrations

S-8Registration of securities for employees05/18/23 S-8Registration of securities for employees05/19/22 S-8 POSPost-effective amendment (S-8)05/17/22 S-8 POSPost-effective amendment (S-8)05/17/22 S-8 POSPost-effective amendment (S-8)05/17/22

Proxies

DEF 14ADefinitive proxy04/09/26 DEFA14AAdditional proxy materials04/09/26 DEF 14ADefinitive proxy04/04/25 DEFA14AAdditional proxy materials04/04/25 DEF 14ADefinitive proxy04/04/24

Ownership

SC 13G/ABeneficial ownership (amended)10/30/26 Form 3Initial insider ownership09/24/26 Form 4Insider transaction09/24/26 Form 4Insider transaction09/10/26 144Proposed sale of securities09/09/26

Other

ARSAnnual report to shareholders04/09/26 ARSAnnual report to shareholders04/04/25 ARSAnnual report to shareholders04/04/24 ARSAnnual report to shareholders04/06/23 UPLOADLetter from the SEC02/09/23