Exhibit 99.1

FOR IMMEDIATE RELEASE

LSB INDUSTRIES, INC. REPORTS OPERATING RESULTS

FOR THE 2015 FOURTH QUARTER

El Dorado Ammonia Plant Remains on Track to be in Production Early in Second Quarter of 2016

Provides Chemical Business Product Volume Guidance for Full Year 2016

OKLAHOMA CITY, Oklahoma…February 29, 2016… LSB Industries, Inc. (“LSB”) (NYSE: LXU) today announced results for the fourth quarter and full year ended December 31, 2015.

Financial Highlights of Fourth Quarter 2015 Compared to Fourth Quarter 2014

Financial Highlights of Full Year 2015 Compared to Full Year 2014

“Our fourth quarter fell short of our expectations,” stated Dan Greenwell, LSB’s President and CEO. “Results for our Chemical Business were weaker than the fourth quarter of 2014 due to unplanned downtime at our Pryor Facility, lower sales of ammonium nitrate to the mining sector and lower selling prices for agricultural chemicals, which were down approximately 16% compared to the prior year period. Looking at the current year, fertilizer prices appear to have stabilized, and we believe that, due to the contracted fall fertilizer application season, demand for fertilizers will be stronger this spring and pricing will firm up from current levels.

“Additionally, we were disappointed with the unplanned outage at our Cherokee Facility. Cherokee operated efficiently and consistently during 2015, with the exception of two weeks in December, and its ammonia plant operated at an on-stream rate of 94% for the full year of 2015. We are continuing to take positive steps with equipment replacement and upgrades at both the Pryor and Cherokee plants to increase on-stream rates in 2016.

“On the subject of our El Dorado Facility, as we’ve previously announced, we began operating our new nitric acid plant and concentrator in the second and fourth quarters of 2015, respectively, and attained a significant milestone by achieving mechanical completion of a new 375,000 ton per year ammonia plant within the last several weeks. The ammonia plant is currently in its commissioning phase, and we plan to begin producing ammonia early in the second quarter of 2016. We expect the total cost of the El Dorado Expansion Project remain within the previously announced range of $831 million to $855 million. We continue to expect that this expansion will have a transformative impact on the profitability of our Chemical Business and LSB overall in the coming quarters and years.

“Turning to our Climate Control Business, while sales were down slightly, reflecting continuing weakness in demand for residential heat pumps, fourth quarter bookings and year-end 2015 backlog were up versus last year, pointing to the continued gradual recovery in our commercial and institutional end markets. Most encouraging was the 50 basis points of gross margin expansion generated by Climate Control in the quarter. This improved margin was the result of the operational excellence initiatives we have been implementing over the past several quarters, which included managerial enhancements, labor productivity improvements and cost reductions, and we expect further improvement throughout 2016.”

Mr. Greenwell concluded, “We have much left to accomplish to deliver the level of financial performance I believe that LSB is capable of generating. Over the past twelve months, the organization has undergone substantial changes and worked its way through a number of challenges and distractions. In 2016 our attention will be set squarely on execution of our strategic plan with the startup of the El Dorado ammonia plant and a focus on improving the reliability of our Chemical facilities, along with growing sales and improving the margins of our Climate Control Business. Additionally, we believe that the stronger profitability and cash flow we expect to generate, will give us opportunities to improve our overall capitalization and liquidity. As a result, we think we are well positioned to deliver greater value to our shareholders in the coming year.”

Chemical Business Fourth Quarter 2015 Compared to Fourth Quarter 2014:

Comparison of 2015 to 2014 periods:

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The following tables provide key operating metrics for the Agricultural products of our Chemical Business:

With respect to sales of Industrial, Mining and Other Chemical Products, the following table indicates the volumes sold of our major products:

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Climate Control Business Fourth Quarter 2015 Compared to Fourth Quarter 2014:

Comparison of 2015 to 2014 periods:

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Financial Position and Capital Additions

As of December 31, 2015, our total cash and investments were $127.3 million, including short-term investments.

Total long-term debt, including current portion was $520.4 million at December 31, 2015 compared to $450.9 million at December 31, 2014 and our Working Capital Revolver Loan at December 31, 2015 was undrawn (borrowing availability, which is tied in to eligible accounts receivable and inventories, was $64.4 million at December 31, 2015). Interest expense, net of capitalized interest, for the fourth quarter of 2015 was $0.9 million compared to $4.1 million for the same period in 2014. Additionally, in December 2015 the Company issued $210 million of preferred stock with an aggregate liquidation preference of $212.3 million, inclusive of accrued dividends at December 31, 2015.

Capital additions were $146.5 million in the fourth quarter of 2015, including $140.8 million relating to the expansion projects at our El Dorado Facility. Planned capital additions for 2016, in the aggregate, are estimated to range from $174 million to $210 million, including $126 million to $150 million remaining for the full-year on the El Dorado expansion project. Some of the 2016 planned capital additions, not related to the El Dorado expansion project, may be deferred should we need to do so.

Full Year 2016 Chemical Business Sales Volume Outlook

The Company’s outlook for sales volume for the full year 2016 in its Chemical Business is as follows:

Conference Call

LSB’s management will host a conference call covering the fourth quarter results on Tuesday, March 1, 2016 at 10:00 am ET/9:00 am CT to discuss these results and recent corporate developments. Participating in the call will CEO, Dan Greenwell and Executive Vice President and CFO, Mark Behrman. Interested parties may participate in the call by dialing (201) 493-6739. Please call in 10 minutes before the conference is scheduled to begin and ask for the LSB conference call. To coincide with the conference call, LSB will post a slide presentation at www.lsbindustries.com on the webcast section of Investor Info tab.

To listen to a webcast of the call, please go to the Company’s website at www.lsbindustries.com at least 15 minutes prior to the conference call to download and install any necessary audio software. If you are unable to listen live, the conference call webcast will be archived on the Company’s website. We suggest listeners use Microsoft Explorer as their web browser.

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LSB Industries, Inc.

LSB is a manufacturing and marketing company. LSB’s principal business activities consist of the manufacture and sale of chemical products for the agricultural, mining and industrial markets; and, the manufacture and sale of commercial and residential climate control products, such as water source and geothermal heat pumps, hydronic fan coils, modular geothermal and other chillers and large custom air handlers.

This press release contains certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements generally are identifiable by use of the words “believe,” “expect,” “intend,” “plan to,” “estimate,” “project” or similar expressions, and include but are not limited to: our belief that we have accurately revised the cost projections and timing of completion for the El Dorado project; our expectation of increased reliability and production consistency at our Facilities, including our Cherokee and Pryor Facilities; our projections of trends in the fertilizer market; our outlook for commercial and residential construction; our expectation of continued success of our operational excellence initiatives; our belief in stronger profitability and expectation of cash flow generation; opportunities to improve our overall capitalization and liquidity; and our planned capital additions for 2016.

Investors are cautioned that such forward-looking statements are not guarantees of future performance and involve risk and uncertainties. Though we believe that expectations reflected in such forward-looking statements are reasonable, we can give no assurance that such expectation will prove to be correct. Actual results may differ materially from the forward-looking statements as a result of various factors, including, but not limited to: general economic conditions; weather conditions; increased costs to complete the El Dorado project; ability to install necessary equipment and renovations at our Facilities in a timely manner; changes to federal legislation or adverse regulations; increased competitive pressures, domestic and foreign; ability to complete transactions to address our leveraged balance sheet and cash flow requirements; loss of significant customers; increased costs of raw materials; and other factors set forth under “Risk Factors” and “Special Note Regarding Forward-Looking Statements” in the Form 10-K for year ended December 31, 2015 and, if applicable, our Quarterly Reports on Form 10-Q and our Current Reports on Form 8-K, which contain a discussion of a variety of factors which could cause future outcomes to differ materially from the forward-looking statements contained in this release.

See Accompanying Tables

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Financial Highlights

Three Months and Twelve Months Ended December 31,

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Financial Highlights

Three Months and Twelve Months Ended December 31,

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Consolidated Balance Sheets

(Continued on following page)

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Consolidated Balance Sheets (continued)

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Non-GAAP Reconciliation

This news release includes certain “non-GAAP financial measures” under the rules of the Securities and Exchange Commission, including Regulation G. These non-GAAP measures are calculated using GAAP amounts in our consolidated financial statements.

EBITDA Reconciliations

EBITDA is defined as net income plus interest expense, depreciation, depletion and amortization of property plant and equipment, amortization of other assets, less interest included in amortization, plus provision for income taxes plus loss from discontinued operations. We believe that certain investors consider EBITDA a useful means of measuring our ability to meet our debt service obligations and evaluating our financial performance. EBITDA has limitations and should not be considered in isolation or as a substitute for net income, operating income, cash flow from operations or other consolidated income or cash flow data prepared in accordance with GAAP. Because not all companies use identical calculations, this presentation of EBITDA may not be comparable to a similarly titled measure of other companies. The following table provides a reconciliation of net income to EBITDA for the periods indicated.

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Non-GAAP Reconciliation (continued)

Adjusted Operating Income (Loss), EBITDA, Net Income (Loss) Applicable to Common Stock and Diluted Earnings per Share

Adjusted operating income (loss), adjusted EBITDA, adjusted net income (loss) applicable to common stock and adjusted income (loss) per diluted share are reported to show the impact of the impairment adjustments, severance costs and insurance recoveries. We believe that the inclusion of supplementary adjustments to operating income, EBITDA, net income applicable to common stock and diluted income per common share, are appropriate to provide additional information to investors about certain unusual items. The following tables provide reconciliations of operating income, EBITDA, net income applicable to common stock and diluted income per common share excluding the impact of the insurance recoveries and unrealized loss on forward natural gas purchase commitments.

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Non-GAAP Reconciliation (continued)

Agricultural Sales Price Reconciliation

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