Exhibit 99.1

FOR IMMEDIATE RELEASE

LSB INDUSTRIES, INC. REPORTS RESULTS FOR THE

2013 FOURTH QUARTER

OKLAHOMA CITY, Oklahoma…February 27, 2014… LSB Industries, Inc. (“LSB”) (NYSE: LXU) today announced results for the fourth quarter and full year ended December 31, 2013.

Consolidated Fourth Quarter 2013 Financial Highlights Compared to 2012:

Consolidated Full Year 2013 Financial Highlights Compared to 2012:

Jack Golsen, LSB’s Board Chairman and CEO stated, “During 2013, we took action to enhance the Company’s operations, particularly at our chemical facilities, which should position LSB for sales growth and profitability improvement. Full year 2013 results in our Chemical Business reflect downtime during the first half of the year at our Cherokee Facility and intermittently throughout the year and for most of the fourth quarter at our Pryor Facility. Our Climate Control Business performed well during 2013 with gross margins up, driven by better product mix, lower raw material costs and improved overhead absorption related to the higher sales volumes. Looking ahead to 2014, we will continue to focus on implementing our multi-year capital investment plans at El Dorado and Pryor and capitalizing on the strength of our end-markets to create value for shareholders.”

Chemical Business Fourth Quarter 2013 Compared to Fourth Quarter 2012:

The decrease in Chemical Business net sales and operating income, excluding insurance recoveries, was largely attributable to unplanned downtime at the Pryor Facility while repairs were made to the facility’s primary ammonia plant. As a result of the downtime, Pryor’s ammonia production and sales for the quarter were nominal. The estimated adverse effect on operating income from the lost production resulting from the unplanned downtime was $23 million to $29 million in the fourth quarter.

With respect to agricultural chemical sales, our Chemical Business sold an aggregate 88.7 thousand tons of urea ammonium nitrate solutions (UAN), ammonium nitrate (AN), anhydrous ammonia, and other products (fertilizer blends and specialty chemicals) during the fourth quarter of 2013 as compared to 97.6 thousand tons in the same period of 2012. The following tables provide further information on our agricultural sales and feedstock costs:

Average natural gas cost: $3.78 per MMBtu, excluding hedging activity

Average cost for purchased ammonia: $454 per ton

Average natural gas cost: $3.84 per MMBtu, excluding hedging activity

Average cost for purchased ammonia: $545 per ton

Climate Control Business Fourth Quarter 2013 Compared to Fourth Quarter 2012:

New orders for Climate Control products were $58.8 million in the fourth quarter of 2013 compared to $64.6 million for the third quarter of 2013; and $66.8 million for the fourth quarter of 2012. At December 31, 2013, backlog was $39.7 million compared to $55.5 million at December 31, 2012.

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Segment sales by product category and end market are summarized in the tables below:

Cash Flow and Financial Position

Cash flow from operating activities was $8.8 million for the fourth quarter of 2013 and $54.1 million for 2013 compared to $26.1 million and $99.5 million, respectively, in 2012. Capital expenditures were $43.6 million and $157.4 million in the fourth quarter and year of 2013, respectively, compared to $31.0 million and $92.6 million in 2012.

Total debt was $463.0 million at December 31, 2013, up from $72.4 million at December 31, 2012 reflecting the August 2013 issuance of $425 million of 7.75% senior secured notes. These funds are primarily earmarked for major expansion projects at the El Dorado Facility. During the fourth quarter of 2013, we received the necessary permits to proceed with the expansion projects at the El Dorado Facility which include an ammonia production plant; a new 65% strength nitric acid plant and concentrator to replace the lost production from the DSN plant explosion; and for other support infrastructure. The total expected cost of these projects is $428 million to $498 million and are expected to be completed by the end of 2015. Upon completion, these investments are estimated to generate incremental EBITDA of $90 million to $100 million per year. Interest expense for the fourth quarter and year of 2013 was $7.3 million and $14.0 million, respectively, compared to $0.4 million and $4.2 million in 2012. Additional interest capitalized in the fourth quarter and year of 2013 was $1.8 million and $4.0 million, respectively.

Industry Perspective / Outlook

Mr. Golsen continued, “In our Chemical Business, our key end markets remain historically strong. The industry outlook for planting levels is high and we continue to see favorable pricing for growers. As a result, we see robust worldwide demand for fertilizers, which should positively impact sales volumes for our agricultural products. Industrial products remain a significant market for our Chemical Business and we are pleased to see that market indicators are forecasting growth for the next few years.

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“In Climate Control, leading indicators point to solid growth in commercial and institutional construction, as well as, residential housing starts over the next three years. We are anticipating an improvement in all the major sectors we serve, especially housing and education. We have been investing in our Climate Control operations, which we expect to translate into expanding profitability as sales improve.

Mr. Golsen concluded, “Overall, the outlooks for both Chemical and Climate Control end markets are favorable, and we remain focused on executing effectively, and investing in the efficiency of our operations in order to deliver improved results.”

Conference Call

LSB’s management will host a conference call covering the fourth quarter and full year results on Thursday, February 27, 2014 at 11:00 am ET/10:00 am CT to discuss these results and recent corporate developments. Participating in the call will be Board Chairman and CEO, Jack E. Golsen; President and COO, Barry H. Golsen; and Executive Vice President and CFO, Tony M. Shelby. Interested parties may participate in the call by dialing 201 493-6739. Please call in ten 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 before 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.

LSB Industries, Inc.

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

This press release contains certain forward-looking statements within the meaning of the Private Securities Litigation Act of 1995. These forward-looking statements generally are identifiable by use of the words “believe,” “expects,” “intends,” “plans to,” “estimates,” “projects” or similar expressions, and such forward-looking statements include, but are not limited to, implementing capital investment plans; capitalizing on the strength of our end markets to create value for shareholders; industry outlook for our Chemical Business; favorable pricing for growers; strong demand worldwide for fertilizers; growth for our industrial chemical products; solid growth in our Climate Control market; and expanding profitability as sales improve in our Climate Control operations. Investors are cautioned that such forward-looking statements are not guarantees of future performance and involve risk and uncertainties, and that 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; lack of growth in the commercial and residential construction industry; acceptance by the market of our geothermal heat pump products, acceptance of our technology; increase competitive pressures, domestically and foreign; price increases for raw materials; loss of significant customer; changes to federal legislation or adverse regulations; available working capital; ability to install necessary equipment and renovations at the El Dorado Facility and the Pryor Facility in a timely manner; receipt in a timely manner of production equipment; problems with production equipment; and other factors set forth under “Risk Factors” and “A Special Note Regarding Forward-Looking Statements”, a discussion of a variety of factors which could cause the future outcome to differ materially from the forward-looking statements contained in this report and in the Form 10-K for year ended December 31, 2013.

See Accompanying Tables

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LSB Industries, Inc.

Unaudited Financial Highlights

Years and Three Months Ended December 31, 2013 and 2012

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LSB Industries, Inc.

Unaudited Financial Highlights

Years and Three Months Ended December 31, 2013 and 2012

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LSB Industries, Inc.

Notes to Unaudited Financial Highlights

Years and Three Months Ended December 31, 2013 and 2012

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LSB Industries, Inc.

Consolidated Balance Sheets

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LSB Industries, Inc.

Consolidated Balance Sheets (continued)

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LSB Industries, Inc.

Non-GAAP Reconciliation

(In Millions, except per share amounts) (unaudited)

This news release includes the measures “EBITDA”, “adjusted net loss applicable to common stock” and “adjusted loss per diluted share”. These measures are deemed “non-GAAP financial measure” under the rules of the SEC, including Regulation G. These non-GAAP measures are calculated using GAAP amounts in our consolidated financial statements. These non-GAAP financial measures have limitations and should not be considered in isolation or as a substitute for net 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, these presentations of EBITDA, adjusted net loss applicable to common stock, and adjusted loss per diluted share may not be comparable to similarly titled measures of other companies.

EBITDA Reconciliations

EBITDA is defined as net income (loss) plus interest expense, depreciation, depletion and amortization of property plant and equipment, amortization of other assets, less interest included in amortization, plus provisions 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. The following table provides a reconciliation of net income to EBITDA for the periods indicated.

(continued)

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LSB Industries, Inc.

Non-GAAP Reconciliation (continued)

(In Millions, except per share amounts) (unaudited)

Adjusted Net Loss Applicable to Common Stock and Diluted Earnings per Share

Excluding Insurance Recoveries

Adjusted net loss applicable to common stock and adjusted loss per diluted share are reported to show the impact of the insurance recoveries. We believe that the inclusion of supplementary adjustments to the GAAP measures, net income applicable to common stock and diluted income per common share, are appropriate to provide additional information to investors about certain unusual items that are not expected to reoccur in the future. The following table provides a reconciliation of net income applicable to common stock to adjusted net loss applicable to common stock excluding the impact of the insurance recoveries. The following table also calculates the loss per diluted share of the adjusted net loss applicable to common stock.

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