Exhibit 99.1

FOR IMMEDIATE RELEASE

LSB INDUSTRIES, INC. REPORTS OPERATING RESULTS

FOR THE 2015 SECOND QUARTER

Updates Status of El Dorado Facility Expansion

Provides Chemical Business Product Volume Guidance for 2015 Third Quarter

OKLAHOMA CITY, Oklahoma… August 7, 2015… LSB Industries, Inc. (“LSB”) (NYSE: LXU) today announced results for the second quarter ended June 30, 2015.

Financial Highlights of Second Quarter 2015 Compared to Second Quarter 2014

“Our second quarter results were impacted by both internal and external factors,” stated Barry Golsen, LSB’s President and CEO. “Chemical Business sales declined primarily as a result of a 17 day unplanned outage at our Pryor Facility ammonia plant during May which was caused by the need to replace a failed heat exchanger and, to a lesser extent, a water main break in the industrial park where the facility is located. Additionally, the lower Chemical sales as compared to prior year second quarter reflects the previously discussed April 2015 expiration of our contract with Orica for low density ammonium nitrate. A final factor negatively affecting second quarter Chemical Business results was the impact of unfavorable weather in our agricultural markets, which shortened the spring fertilizer application season, reducing our volumes and depressing prices for ammonia, UAN and AN in the quarter.”

Mr. Golsen continued, “Our Climate Control Business delivered solid growth in sales driven by demand for our hydronic fan coils, large custom air handlers and modular chillers. The outlook for commercial/institutional and residential construction appears strong and we have been focused on cultivating our customer relationships and new product development efforts to position our business to capitalize on these growth opportunities. Climate Control operating profit declined as compared to the prior year period due to lower sales of heat pumps, higher warranty expense and freight costs along with an increase in personnel related costs.”

Chemical Business Second Quarter 2015 Compared to Second Quarter 2014:

Comparison of 2015 period to 2014 period:

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

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

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

Comparison of 2015 period to 2014 period:

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Financial Position and Capital Additions

As of June 30, 2015, total cash and investments were $157.7 million, including short-term investments.

Total long-term debt was $470.2 million at June 30, 2015 compared to $457.3 million at December 31, 2014 and our $100 million Working Capital Revolver Loan remains undrawn (borrowing availability, which is tied in to eligible accounts receivable and inventories, was $75.3 million at June 30, 2015). Interest expense, net of capitalized interest, for the second quarter of 2015 was $2.2 million compared to $5.7 million for the same period in 2014.

Capital additions were $112.3 million in the second quarter of 2015, including $104.5 million relating to the expansion projects at the El Dorado Facility, which include a 1,150 ton per day anhydrous ammonia production plant; a new 1,100 ton per day 65% strength nitric acid plant and concentrator; and other support infrastructure. Planned capital additions for the remainder of 2015, in the aggregate, are estimated to range from $254 million to $290 million, including $223 million to $243 million remaining for the El Dorado expansion projects. However, it is possible that a portion of the capital additions for the expansion projects could occur during the first quarter of 2016.

The Company’s outlook for sales volume for the third quarter of 2015 in its Chemical Business is as follows:

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El Dorado Facility Expansion Update

During the first part of August 2015, the engineering, procurement and construction contractor and other consultants we have retained in connection with the El Dorado Expansion projects advised us they are now estimating that the total cost to complete the El Dorado Expansion projects will exceed what we previously projected, due, in part, to work performed by a previous subcontractor. We have now been advised that the total cost to complete the El Dorado Expansion projects is estimated to be in the range of $660 million to $680 million ($437 million spent as of June 30, 2015 and $223 million to $243 million to be spent in the balance of 2015 with the possibility that a portion of these capital additions could occur during the first quarter of 2016).

It is expected that the new ammonia plant will be mechanically complete by the end of 2015 and should begin production early in the second quarter 2016. As it relates to the new nitric acid plant and concentrator, the concentrator went into production in June 2015 and the nitric acid plant is expected to be mechanically complete in September 2015, with production beginning mid-fourth quarter 2015.

We expect to be able to fund the cash needs for our operations and our capital expenditures, including the El Dorado Expansion projects and our other planned discretionary capital projects, from cash on hand, internally generated cash flow, working capital, borrowings under our working capital revolver, and other financings. We are currently negotiating with third party lenders for the financing for certain discrete pieces of equipment in connection with the El Dorado Expansion projects. Additionally, the Indenture governing our Senior Secured Notes allows us to incur an additional $50 million in debt. We are also in discussions with other financing providers to provide additional capital, as needed, for the completion of the El Dorado Expansion projects. If for some reason we are unable to complete these financings or there is a shortfall in our internally generated cash flow, either of which would negatively affect our ability to fund all of the discretionary capital projects we had planned to complete or initiate during the balance of 2015 and 2016, we would be required to reduce, delay the start of, or terminate at least some of these capital projects.

LSB to Implement Strategic and Corporate Governance Enhancements

LSB also today announced in a separate press release that the Strategic Committee of the LSB Board of Directors, comprised of independent directors, presented the Board of Directors with a report and certain recommendations on July 30, 2015 following an evaluation of the Company’s business strategy, corporate governance structure, related party transactions and other governance practices of the Company. LSB intends to implement the initiatives and corporate governance enhancements recommended by the Strategic Committee while continuing to execute on the Company’s strategy to create sustained shareholder value by lowering production costs, improving manufacturing efficiency, driving sales growth and enhancing profitability.

Conference Call

LSB’s management will host a conference call covering the second quarter results on Friday, August 7, 2015 at 10:00 am ET/9:00 am CT to discuss these results and recent corporate developments. Participating in the call will be Executive Chairman, Jack E. Golsen; President and CEO, Barry H. Golsen 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.

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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. The conference call webcast will be archived on the Company’s website. LSB suggests that 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 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 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 include but not limited to, outlook for commercial and residential construction; planned capital additions for balance of 2015; cost of El Dorado facility expansion and timing of completion; funding of capital expenditures and cash needs; effect if not able to complete additional financings; and implementation of recommendation by Strategic Committee.

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; increased 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” in the Form 10-K for year ended December 31, 2014 and in the Form 10-Q for the quarter ended March 31, 2015, which contain a discussion of a variety of factors which could cause the future outcome to differ materially from the forward-looking statements contained in this release.

See Accompanying Tables

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LSB Industries, Inc.

Financial Highlights

Six Months and Three Months Ended June 30,

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LSB Industries, Inc.

Financial Highlights

Six Months and Three Months Ended June 30,

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LSB Industries, Inc.

Financial Highlights

Three Months Ended June 30, 2015 and 2014

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LSB Industries, Inc.

Consolidated Balance Sheets

(Continued on following page)

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LSB Industries, Inc.

Consolidated Balance Sheets (continued)

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LSB Industries, Inc.

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, and depletion 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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