Exhibit 99.1

FOR IMMEDIATE RELEASE

LSB INDUSTRIES, INC. REPORTS OPERATING RESULTS

FOR THE 2016 FIRST QUARTER

El Dorado Ammonia Plant in Final Stages of Start-Up

OKLAHOMA CITY, Oklahoma…May 4, 2016… LSB Industries, Inc. (“LSB”) (NYSE: LXU) today announced results for the first quarter ended March 31, 2016.

First Quarter Highlights

“Today we are pleased to report that we are nearing a transformative development in LSB Industries’ life as a public company,” stated Dan Greenwell, LSB’s President and CEO. “The new 375,000 ton per year ammonia plant at our El Dorado Facility is in the final stages of start-up and we expect to be producing ammonia in the next several weeks. At that point we expect to see a material improvement in profitability at the El Dorado Facility reflecting significantly lower feedstock costs, along with a greater overall volume of ammonia to upgrade to other products and to sell as part of our previously announced ammonia offtake agreement.”

“Turning to our first quarter 2016 financial performance, our Chemical Business results declined relative to the prior year quarter due largely to lower selling prices for our agricultural products. Pricing for nitrogen fertilizers has firmed up during the spring season but remains relatively low compared to the last several years. However, a reduction in natural gas costs has partially offset decreases in selling prices. Recent industry forecasts point to an increase in acres of corn to be planted by U.S. growers of approximately 6% this year relative to 2015. This increase, coupled with the poor fall 2015 application season, which led to stronger spring 2016 fertilizer application, makes us optimistic that the trend of lowered pricing for our agricultural products has stabilized.

“Our Chemical Business performance as compared to the first quarter of 2015 also continued to reflect the April 2015 expiration of our contract with Orica for low density ammonium nitrate, which resulted in reduced sales, as well as lost fixed cost absorption, exacerbated by the ongoing cost disadvantage resulting from the use of purchased ammonia at our El Dorado Facility. When the new ammonia plant is up and running, and we commence ammonia sales, and with a full year behind us since the end of the Orica contract, we expect year-over-year sales and profit comparisons for El Dorado to improve dramatically.

“Outside of the headwinds presented by weak agricultural product pricing, our facilities performed well during the quarter. Our Pryor Facility achieved an ammonia on-stream rate of 92% during the first quarter while our Cherokee Facility’s ammonia on-stream rate was 96%. We expect continued consistent production for the balance of 2016 as we focus on the implementation of enhanced reliability programs at all of our facilities.

“With respect to our Climate Control Business, we had a solid first quarter 2016. Sales increased compared to the same quarter last year, driven by stronger demand for our large custom air handlers for the healthcare and industrial sectors. These markets continue to show signs of gradual recovery and we expect to see continued improvement through the balance of the year. Notably, our Climate Control Business generated 120 basis points of gross profit improvement relative to the prior year reflecting the operating leverage inherent in the business as volumes rise, coupled with the increasing benefits of our operational excellence initiatives.”

Mr. Greenwell concluded, “Upon the start-up of our new ammonia plant at El Dorado, we believe that LSB will soon be better positioned to deliver profitable growth than at any time in our Company’s history. With our Pryor and Cherokee Facilities running well, and the other operational enhancements we have been implementing throughout our organization, we currently expect to generate improved earnings and free cash flow, while at the same time, strengthening our balance sheet, which we believe will translate into greater value for our shareholders.”

Chemical Business First Quarter 2016 Compared to First Quarter 2015:

Comparison of 2016 to 2015 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 First Quarter 2016 Compared to First Quarter 2015:

Comparison of 2016 to 2015 periods:

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Financial Position and Capital Additions

As of March 31, 2016, our total cash and investments were $39.5 million, including short-term investments.

Capital additions were approximately $96.1 million in the first quarter of 2016, including $90.8 relating to the expansion projects at our El Dorado Facility. Planned capital additions for the remainder of 2016, in the aggregate, are estimated to be in the range of $72 million to $114 million, including $29 million to $59 million remaining for the full-year on the El Dorado expansion projects. Some of the 2016 planned capital additions, not related to the El Dorado expansion projects, may be deferred should we need to do so.

Total long-term debt, including the current portion was $528.5 million at March 31, 2016 compared to $520.4 million at December 31, 2015 and our Working Capital Revolver Loan at March 31, 2016 was undrawn (borrowing availability, which is tied in to eligible accounts receivable and inventories, was $69.3 million at March 31, 2016). Interest expense, net of capitalized interest, for the first quarter of 2016 was $1.4 million compared to $3.4 million for the same period in 2015. Additionally, in December 2015 the Company issued $210 million of preferred stock with an aggregate liquidation preference of $219.6 million, inclusive of accrued dividends at March 31, 2016.

In February 2016, we received financing of $10 million related to the cogeneration facility equipment in connection with the El Dorado expansion projects. We are currently in discussions with several parties for further financing as it relates to the cogeneration facilities. Additionally, on April 1, 2016 we successfully refinanced our $12 million promissory note related to our Marcellus Shale assets. Furthermore, we expect to receive the remaining $5 million in financing related to the ammonia storage tank in the second quarter of 2016.

We believe that the combination of our cash, the availability on our Working Capital Revolver Loan, the additional borrowings discussed above and our cash from operations will be sufficient to fund our anticipated liquidity needs for the remainder of 2016. Once we recognize improved operating results, we anticipate that our next significant initiative will be to refinance our Senior Secured Notes and our Series E Redeemable Preferred to obtain a lower cost of capital. We hope this will be accomplished towards the end of 2016 or in 2017.

Full Year 2016 Update

With the continued headwinds in the mining industry we are revising our sales outlook for AN in the Industrial, Mining and Other sector from 110,000 – 135,000 tons to 70,000 – 95,000 tons for the full year of 2016. We do expect increased ammonia sales volumes of approximately 10,000 tons as compared to previously announced guidance.

For 2016, we anticipate consolidated interest expense to be in the range of $31 million - $32 million, net of capitalized interest of approximately $14 million. Additionally, we expect consolidated depreciation and amortization to be $72 million - $75 million in 2016 and $82 million - $85 million, assuming a full year of El Dorado project depreciation.

Conference Call

LSB’s management will host a conference call covering the first quarter results on Thursday, May 5, 2016 at 10:00 am ET/9:00 am CT to discuss these results and recent corporate developments. Participating in the call will be President and CEO, Dan Greenwell and Executive Vice President and CFO, Mark Behrman. Interested parties may participate in the call by dialing (708) 290-0754. Please call in 10 minutes before the conference is scheduled to begin and mention conference ID 94985763. To coincide with the conference call, LSB will post a slide presentation at www.lsbindustries.com on the webcast section of the Investor tab of our website.

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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 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.

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.

Forward-Looking Statements

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 our Form 10-K for the 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. All forward-looking statements included in this press release are expressly qualified in their entirety by such cautionary statements. We expressly disclaim any obligation to update, amend or clarify and forward-looking statement to reflect events, new information or circumstances occurring after the date of this press release except as required by applicable law.

See Accompanying Tables

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LSB Industries, Inc.

Financial Highlights

Three Months Ended March 31,

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LSB Industries, Inc.

Financial Highlights

Three Months Ended March 31,

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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 and Segment EBITDA Reconciliations

EBITDA is defined as net income plus interest expense, depreciation, depletion and amortization of property plant and equipment (which includes amortization of other assets and excludes interest included in amortization), plus provision for income taxes. 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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LSB Industries, Inc.

Non-GAAP Reconciliation (continued)

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

Adjusted operating income, adjusted EBITDA, adjusted net income (loss) applicable to common stock and adjusted income (loss) per diluted share are reported to show the impact of a one-time consulting fee, start-up/commissioning costs, certain fair market value adjustment, stock based compensation, Delaware unclaimed property liability, and insurance recovery. We believe that the inclusion of supplementary adjustments to operating income, EBITDA, net income (loss) 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 (loss), EBITDA, net income (loss) applicable to common stock and diluted income (loss) per common share excluding the impact of the supplementary adjustments.

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LSB Industries, Inc.

Non-GAAP Reconciliation (continued)

Agricultural Sales Price Reconciliation

The following table provides a reconciliation of unit selling prices for our key products calculated using GAAP amounts in our consolidated financial statement reconciled to “net back” prices which are calculated as sales less freight expenses divided by product sales volume in tons. We believe this provides a relevant industry comparison among our peer group.

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