 Dallas, Texas, March 10, 2021 GLOBE NEWSWIRE -- NL Industries, Inc. NYSE: NL today reported net income attributable to NL stockholders of 4.3 million, or .09 per share, in the fourth quarter of 2020 compared to net income attributable to NL stockholders of 6.3 million, or .13 per share, in the fourth quarter of 2019. For the full year of 2020, NL reported net income attributable to NL stockholders of 14.7 million, or .30 per share, compared to net income attributable to NL stockholders of 25.8 million, or .53 per share in 2019. NL results include an unrealized loss of 8.7 million in the full year of 2020 related to the change in value of marketable equity securities compared to a .9 million unrealized loss in 2019. NL also recognized a pre-tax litigation settlement expense of 19.3 million .31 per share, net of income tax benefit mainly in the second quarter of 2019. 