NL REPORTS FIRST QUARTER 2026 RESULTS DALLAS, TEXAS – May 6, 2026 – NL Industries, Inc. (NYSE: NL) today reported net income attributable to NL stockholders of $4.3 million, or $.09 per share, in the first quarter of 2026 compared to $.7 million, or$.01 per share, in the first quarter of 2025. NL's results include an unrealized gain of $2.7 million in the first quarter of 2026 compared to an $8.5 million unrealized loss in the first quarter of 2025 related to the change in value of marketable equity securi ...