Browse the full record of transactions filed by Harper John E, Director. Officer active across 4 companies, notably KRONOS WORLDWIDE INC. Aggregated, 10 disclosures have been published. The latest transaction was filed on 14 May 2026 (Attribution). Regulator: SEC (Form 4). All data is accessible without signup.
John E. Harper serves as a Board Member at KRONOS WORLDWIDE INC and NL INDUSTRIES INC. He contributes to the strategic direction of these companies and important decision-making. His experience in the sector is an asset in ensuring the growth and compliance of the organization.