OKLAHOMA CITY–(BUSINESS WIRE)–LSB Industries, Inc. (NYSE: LXU) (“LSB” or the “Company”) today announced results for the first quarter ended March 31, 2021. First Quarter Highlights Net sales of $98.1 million compared to $83.4 million in the first quarter of 2020 Adjusted EBITDA(1) of $17.3 million compared to $15.6 million in the first quarter of 2020 Commenced sales under new seven-year nitric acid offtake agreement Total liquidity of approximately $56.0 million as of March 31, 2021 Hired se