Intrepid Potash, Inc. - Quarter Report: 2010 March (Form 10-Q)

Use these links to rapidly review the document
TABLE OF CONTENTS

Table of Contents

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For the Quarterly Period Ended March 31, 2010

Commission File Number: 001-34025

INTREPID POTASH, INC.
(Exact Name of Registrant as Specified in its Charter)

707 17^th Street, Suite 4200
Denver, Colorado 80202
(303) 296-3006
(Address of Principal Executive Offices, Including Zip Code)
(Registrant's Telephone Number, Including Area Code)

         Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. ý Yes    o No

         Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files.) o Yes    o No

         Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

         Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). o Yes    ý No

         As of April 30, 2010, 75,091,326 shares of the registrant's common stock, par value of $0.001 per share, were outstanding.

Table of Contents

INTREPID POTASH, INC.

TABLE OF CONTENTS

2

Table of Contents

PART I—FINANCIAL INFORMATION

Item 1.    CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

INTREPID POTASH, INC.

CONSOLIDATED BALANCE SHEETS (UNAUDITED)

(In thousands, except share and per share amounts)

See accompanying notes to these consolidated financial statements.

3

Table of Contents

INTREPID POTASH, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED)

(In thousands, except share and per share amounts)

See accompanying notes to these consolidated financial statements.

4

Table of Contents

INTREPID POTASH, INC.

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY AND COMPREHENSIVE INCOME (UNAUDITED)

(In thousands, except share amounts)

See accompanying notes to these consolidated financial statements.

5

Table of Contents

INTREPID POTASH, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

(In thousands)

See accompanying notes to these consolidated financial statements.

6

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Note 1—COMPANY BACKGROUND

        Intrepid Potash, Inc. (individually or in any combination with its subsidiaries, "Intrepid," "we," "us," or "our") produces muriate of potash ("potassium chloride" or "potash"); langbeinite; and by-products including salt, magnesium chloride and metal recovery salts. The processing of langbeinite results in sulfate of potash magnesia which is marketed for sale as Trio™. Intrepid owns five active potash production facilities, three in New Mexico and two in Utah. Production comes from two underground mines in the Carlsbad region of New Mexico; a solar evaporation solution mine near Moab, Utah; and a solar evaporation lake brine mine in Wendover, Utah. Intrepid has one operating segment, the extraction and production of potassium-related products, and its operations are conducted entirely in the continental United States.

Note 2—BASIS OF PRESENTATION

        The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and Regulation S-X of the Securities and Exchange Commission. For interim periods, GAAP and Regulation S-X do not require all information and notes that are required for annual periods. Therefore, the accompanying unaudited consolidated financial statements should be read in conjunction with Intrepid's Consolidated Financial Statements and Notes thereto included in Intrepid's Annual Report on Form 10-K for the year ended December 31, 2009, filed with the Securities and Exchange Commission on March 1, 2010. The accompanying unaudited consolidated financial statements reflect all adjustments, which are normal and recurring in nature, and which, in the opinion of management, are necessary for a fair presentation of Intrepid's financial position, results of operations and cash flows at March 31, 2010, and for all periods presented.

Note 3—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

        Principles of Consolidation—The consolidated financial statements of Intrepid include the accounts of Intrepid and its wholly-owned subsidiaries Intrepid Potash—Moab, LLC ("Moab"), Intrepid Potash—New Mexico, LLC ("NM"), Intrepid Potash—Wendover, LLC ("Wendover"), Moab Pipeline LLC, and Intrepid Aviation LLC. All intercompany balances and transactions have been eliminated in consolidation.

        Use of Estimates—The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Intrepid bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results may differ significantly from these estimates under different assumptions or conditions.

        Significant estimates with regard to Intrepid's consolidated financial statements include the estimate of proven and probable mineral reserve volumes, the related present value of estimated future net cash flows, useful lives of plant assets, asset retirement obligations, normal inventory production levels, the valuation of equity awards, the valuation of derivative financial instruments, and estimated annual effective tax rates utilized in the current and deferred income tax calculations. There are numerous uncertainties inherent in estimating quantities of proven and probable reserves, projecting future rates of production, and the timing of development expenditures. Future mineral prices may

7

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 3—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

vary significantly from the prices in effect at the time the estimates are made, as may estimates of future operating costs. The estimate of proven and probable mineral reserve volumes, useful lives of plant assets, and the related present value of estimated future net cash flows can affect depletion, the net carrying value of Intrepid's mineral properties, and the useful lives of related property, plant, and equipment, as well as depreciation expenses.

        Revenue Recognition—Revenue is recognized when evidence of an arrangement exists, risks and rewards of ownership have been transferred to customers, which is generally when title passes, the selling price is fixed and determinable, and collection is reasonably assured. Title passes at the designated shipping point for the majority of sales, but, in a few cases, title passes at the delivery destination. The shipping point may be the plant, a distribution warehouse, a customer warehouse, or a port. Title passes for some international shipments upon payment by the purchaser; however, revenue is recognized for these transactions upon shipment because the risks and rewards of ownership have transferred pursuant to a contractual arrangement. Prices are generally set at the time of, or prior to, shipment. In cases where the final price is determined upon resale of the product by the customer, revenue recognition is deferred until the final sales price is known.

        Sales are reported on a gross basis. Intrepid quotes prices to customers both on a delivered basis and on the basis of pick-up at Intrepid's plants and warehouses. When a sale occurs on a delivered basis, Intrepid incurs and, in turn, bills the customer for freight, packaging, and certain other distribution costs. Many customers, however, arrange for and pay for these costs directly.

        By-product credits—Intrepid records proceeds from the sale of by-products as a credit to cost of goods sold when by-product inventories are sold.

        Inventory and Long-Term Parts Inventory—Inventory consists of product and by-product stocks which are ready for sale, mined ore, potash in evaporation ponds, and parts and supplies inventory. Product and by-product inventory cost is determined using the lower of weighted average cost or estimated net realizable value and includes direct costs, maintenance, operational overhead, depreciation, depletion, and equipment lease costs applicable to the production process. Direct costs, maintenance, and operational overhead include labor and associated benefits.

        Intrepid evaluates its production levels and costs to determine if any should be deemed abnormal, and therefore excluded from inventory costs and instead expensed during the applicable periods. The assessment of normal production levels is judgmental and is unique to each quarter. Intrepid models normal production levels and evaluates historical ranges of production by operating plant in assessing what is deemed to be normal.

        Parts inventory, including critical spares, that is not expected to be utilized within a period of one year is classified as non-current. Parts and supply inventory cost is determined using the lower of average acquisition cost or estimated replacement cost. Detailed reviews are performed related to the net realizable value of parts inventory, giving consideration to quality, slow-moving items, obsolescence, excessive levels, and other factors. Parts inventories not having turned-over in more than a year, excluding parts classified as critical spares, are reviewed for obsolescence and included in the determination of an allowance for obsolescence.

8

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 3—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

        Derivatives—On occasion, Intrepid enters into financial derivative contracts to fix a portion of its natural gas costs when natural gas purchase transactions are probable and the significant characteristics and expected timing are identified. These derivative contracts have not been designated as hedged items, and changes in their fair market values are included in the consolidated statements of operations. The realized and unrealized gains or losses resulting from the natural gas derivative contracts are recorded as a component of natural gas expense within cost of sales.

        Intrepid has also entered into interest rate derivative instruments when it had outstanding debt, in order to swap a portion of floating-rate debt to fixed-rate when borrowings were probable and the significant characteristics and expected timing were identified. These items were not accounted for as hedge items; accordingly, any change in fair value from period to period associated with realized and unrealized gains or losses on interest rate derivative contracts is shown within interest expense.

        Property, Plant, and Equipment—Property, plant, and equipment are stated at historical cost. Expenditures for property, plant, and equipment relating to new assets or improvements are capitalized, provided the expenditure extends the useful life of an asset or extends the asset's functionality. Property, plant, and equipment are depreciated under the straight-line method using estimated useful lives. No depreciation is taken on assets classified as construction in progress until the asset is placed into service. Gains and losses are recorded upon retirement, sale, or disposal of assets. Maintenance and repair costs are recognized as period costs when incurred.

        Mineral Properties and Development Costs—Mineral properties and development costs, which are referred to collectively as mineral properties, include acquisition costs, the cost of drilling wells, and the cost of other development work, all of which are capitalized. Depletion of mineral properties is calculated using the units-of-production method over the estimated life of the relevant ore body. The lives of reserves used for accounting purposes are shorter than current reserve life determinations due to uncertainties inherent in long-term estimates. These reserve life estimates have been prepared by us, and reviewed and independently determined by mine consultants. Reserve studies and mine plans are updated periodically, and the remaining net balance of the mineral properties is depleted over the updated estimated life, subject to a 25-year limit. Possible impairment is also considered in conjunction with updated reserve studies and mine plans. The determination of Intrepid's proven and probable reserves are based on extensive drilling, sampling, mine modeling, mineral recovery, and the economic feasibility of accessing the reserves. The price sensitivity of reserves depends upon several factors including ore grade, ore thickness, and ore mineral composition. The reserves are estimated based on information available at the time the reserves are calculated. Recovery rates vary depending on the mineral properties of each deposit and the production process used. The reserve estimate utilizes the average recovery rate for the deposit, which takes into account the processing methods scheduled to be used. The cutoff grade, or lowest grade of mineralized material considered economic to process, varies with material type, mineral recoveries, operating costs, and expected selling price. Proven and probable reserves are based on estimates, and no assurance can be given that the indicated levels of recovery of potash and langbeinite will be realized or that production costs and estimated future development costs will not exceed the net realizable value of the products. Tons of potash and langbeinite in the proven and probable reserves are expressed in terms of expected finished tons of product to be realized, net of estimated losses. Reserve estimates may require revision based on actual production experience. Market price fluctuations of potash or Trio™, as well as increased production costs or reduced recovery

9

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 3—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

rates, could render proven and probable reserves containing relatively lower grades of mineralization uneconomic to exploit and might result in a reduction of reserves. In addition, the provisions of Intrepid's mineral leases, including royalties payable, are subject to periodic readjustment by state and/or federal government, which could affect the economics of its reserve estimates. Significant changes in the estimated reserves could have a material impact on Intrepid's results of operations and financial position.

        Exploration Costs—Exploration costs include geological and geophysical work performed on areas that do not yet have proven and probable reserves declared. These costs are expensed as incurred.

        Asset Retirement Obligation—Reclamation costs are initially recorded as a liability associated with the asset to be reclaimed or abandoned, based on applicable inflation assumptions and discount rates. The accretion of this discounted liability is recognized as expense over the life of the related assets, and the liability is periodically adjusted to reflect changes in the estimates of either the timing or amount of the reclamation and abandonment costs.

        Annual Maintenance—Each operation typically shuts down periodically for maintenance. The costs of maintenance turnarounds are considered part of production costs and are absorbed into inventory in the period incurred.

        Leases—Upon entering into leases, Intrepid evaluates whether leases are operating or capital leases. Operating lease expense is recognized as incurred. If lease payments change over the contractual term, or involve contingent amounts, the total estimated cost over the term is recognized on a straight-line basis.

        Income Taxes—Intrepid is a subchapter C corporation and therefore is subject to U.S. federal and state income taxes. Intrepid recognizes income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using the enacted tax rates expected to apply to taxable income in the periods in which the deferred tax liability or asset is expected to be settled or realized. Intrepid records a valuation allowance if it is deemed more likely than not that its deferred income tax assets will not be realized in full; such determinations are subject to ongoing assessment.

        Cash and Cash Equivalents—Cash and cash equivalents consist of cash and liquid investments with an original maturity of three months or less. Included in cash and cash equivalents at March 31, 2010, were $1.0 million in cash and $99.3 million in cash equivalent investments, which consisted of money market accounts or certificates of deposit with banking institutions for $8.3 million, U.S. treasuries with daily liquidity of approximately $30.3 million, and U.S. Bank National Association ("U.S. Bank") commercial paper of approximately $60.7 million.

        Investments—Intrepid's short-term and long-term investments consist of certificates of deposit with various banking institutions, which have been classified as financial instruments, and U.S government agency taxable bonds, which have been classified as held-to-maturity debt securities. Short-term investments on the consolidated balance sheet have remaining maturities to Intrepid less than or equal

10

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 3—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

to one year, and investments classified as long-term on the consolidated balance sheet have remaining maturities to Intrepid greater than one year. These investments are carried on the consolidated balance sheet at cost, net of amortized premiums or discounts paid. Amortized cost for the U.S. government agency taxable bonds was approximately $10.0 million at March 31, 2010, and zero at December 31, 2009. The fair value of Intrepid's investments at March 31, 2010, and December 31, 2009, approximated their carrying amounts. Fair value is assessed using a market-based approach.

        Fair Value of Financial Instruments—Intrepid's financial instruments include cash and cash equivalents, certificate of deposit investments, restricted cash, accounts receivable, refundable income taxes, and accounts payable, all of which are carried at cost and approximate fair value due to the short-term nature of these instruments, other than the certificate of deposit investments previously described. Allowances for doubtful accounts are recorded against the accounts receivable balance to estimate net realizable value. Although there are no amounts currently outstanding under Intrepid's senior credit facility, any borrowings that are outstanding are expected to be recorded at amounts that approximate their fair value as borrowings bear interest at a floating rate. Intrepid's interest rate swaps are recorded at fair value with adjustments to this fair value recognized currently in the statements of operations using established counterparty valuations that are subjected to management's review. Since considerable judgment is required to develop estimates of fair value, the estimates provided are not necessarily indicative of the precise amounts that could be realized upon the sale, settlement, or refinancing of such instruments.

        Earnings per Share—Basic net income per common share of stock is calculated by dividing net income available to common stockholders by the weighted average basic common shares outstanding for the respective period.

        Diluted net income per common share of stock is calculated by dividing net income by the weighted average diluted common shares outstanding, which includes the effect of potentially dilutive securities. Potentially dilutive securities for the diluted earnings per share calculation consist of awards of non-vested restricted shares of common stock and outstanding non-qualified stock option awards. The dilutive effect of share-based compensation arrangements is computed using the treasury stock method. Following the lapse of the vesting period of restricted common stock awards, the shares are issued and therefore are included in the number of issued and outstanding shares.

        Stock-Based Compensation—Intrepid accounts for stock-based compensation by recording expense using the fair value of the awards at the time of grant. Intrepid has recorded compensation expense associated with the issuances of non-vested restricted common stock awards and non-qualified stock option awards, both of which are subject to service conditions. The expense associated with such awards is recognized over the service period associated with each issuance. There are no performance or market conditions associated with these awards.

Note 4—EARNINGS PER SHARE

        The treasury stock method is used to measure the dilutive impact of non-vested restricted shares of common stock and outstanding stock options. For the three months ended March 31, 2010, and 2009, a weighted average of 119,994 and 218,086 non-vested shares of restricted common stock and

11

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 4—EARNINGS PER SHARE (Continued)

114,734 and 50,888 stock options, respectively, were anti-dilutive and therefore were not included in the diluted weighted average share calculation.

        The following table sets forth the calculation of basic and diluted earnings per share (in thousands, except per share amounts).

Note 5—INVENTORY AND LONG-TERM PARTS INVENTORY

        The following summarizes Intrepid's inventory, recorded at the lower of weighted average cost or estimated net realizable value as of March 31, 2010, and December 31, 2009, respectively (in thousands):

        Parts inventories are shown net of any required reserves. No obsolescence or other reserves were deemed necessary for product or in-process mineral inventory.

12

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 6—PROPERTY, PLANT, AND EQUIPMENT AND MINERAL PROPERTIES

        "Property, plant, and equipment" and "Mineral properties and development costs" were comprised of the following (in thousands):

        "Mineral properties and development costs" include accumulated costs of approximately $1.3 million as of March 31, 2010, and December 31, 2009, associated with the presently idled HB mine. "Construction in progress" related to property, plant, and equipment associated with the HB mine also includes approximately $30.8 million and $27.2 million as of March 31, 2010, and December 31, 2009, respectively. No depletion or depreciation is currently being recognized on this property or its related assets, as the mine has not yet been placed in service and there is no basis over which to amortize the historical costs. Intrepid is actively seeking the required permits and approvals from the Bureau of Land Management and the state of New Mexico to resume production from this mine through the use of solution mining techniques and the application of solar evaporation, similar to the operations in Moab, Utah.

13

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 6—PROPERTY, PLANT, AND EQUIPMENT AND MINERAL PROPERTIES (Continued)

        Intrepid recorded the following cost for depreciation, depletion, amortization, and accretion ("DD&A"), including DD&A capitalized into inventory, for the following periods (in thousands):

Note 7—DEBT

        Intrepid's senior credit facility, as amended, is a syndicated facility led by U.S. Bank as the agent bank and provides a revolving credit facility of $125 million. The lenders have a security interest in substantially all of the assets of Intrepid and certain of its subsidiaries. Obligations under the senior credit facility are cross-collateralized between Intrepid and certain of its subsidiaries. There were no amounts outstanding under the senior credit facility as of March 31, 2010, or December 31, 2009.

        The senior credit facility contains certain covenants including, without limitation, restrictions on: (i) indebtedness; (ii) the incurrence of liens; (iii) investments and acquisitions; (iv) mergers and the sale of assets; (v) guarantees; (vi) distributions; and (vii) transactions with affiliates. The senior credit facility also contains a requirement to maintain at least $3.0 million of working capital; a ratio of adjusted earnings before income taxes, depreciation and amortization to fixed charges greater than 1.3 to 1.0; and a ratio of the outstanding principal balance of debt to adjusted earnings before income taxes, depreciation and amortization of not more than 3.5 to 1.0. The senior credit facility also contains events of default including, without limitation, failure to pay principal and interest in a timely manner, the breach of certain covenants or representations and warranties, the occurrence of a change in control, and judgments or orders of the payment of money in excess of $1.0 million on claims not covered by insurance. Intrepid was in compliance with all covenants with respect to the senior credit facility as of March 31, 2010.

Note 8—ASSET RETIREMENT OBLIGATION

        Intrepid recognizes an estimated liability for future costs associated with the abandonment and reclamation of its mining properties. A liability for the fair value of an asset retirement obligation and a corresponding increase to the carrying value of the related long-lived asset are recorded as the mining operations occur or as the assets are acquired.

        Intrepid's asset retirement obligation is based on the estimated cost to abandon and reclaim the mining operations, the economic life of the properties, and federal and state regulatory requirements. The liability is discounted using credit-adjusted risk-free rate estimates at the time the liability is incurred or when there are revisions to estimated costs. The credit-adjusted risk-free rates used to discount Intrepid's abandonment liabilities range from 6.9 percent to 8.5 percent. Revisions to the

14

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 8—ASSET RETIREMENT OBLIGATION (Continued)

liability occur due to changes in estimated abandonment costs or economic lives, or if federal or state regulators enact new requirements regarding the abandonment of mines.

        Following is a table of the changes to Intrepid's asset retirement obligations for the following periods (in thousands):

        The undiscounted amount of asset retirement obligation is $32.3 million as of March 31, 2010, and there are no significant payments expected to take place in the next five years.

Note 9—COMPENSATION PLANS

        Cash Bonus Plan—Intrepid has cash bonus plans that allow participants to receive varying percentages of their aggregate base salary. Any awards under the cash bonus plans are based on a variety of elements related to Intrepid's performance in certain production, operational, financial, and other areas, as well as the participants' individual performance. Intrepid accrues cash bonus expense related to the current year's performance. There is approximately $0.8 million of cost accrued for the year-to-date period ended March 31, 2010.

        Equity Incentive Compensation Plan—Intrepid has issued common stock awards, awards of non-vested restricted shares of common stock, and non-qualified stock option awards under its 2008 Equity Incentive Plan (the "2008 Plan"). As of March 31, 2010, there were a total of 297,689 shares of non-vested restricted common stock outstanding and 294,702 outstanding stock options. As of March 31, 2010, there were approximately 4.2 million shares of common stock available for issuance under the 2008 Plan.

Non-vested Restricted Shares of Common Stock

        Under the 2008 Plan, grants of non-vested restricted shares of common stock have been awarded to executive officers, other key employees, and consultants. The awards contain service conditions associated with continued employment or service. There are no performance or market conditions associated with these awards. The terms of the non-vested restricted common stock awards provide voting rights and, upon vesting, the right to receive ordinary dividends otherwise payable during the vesting period to the holders of such awards. Upon vesting of the restricted shares of common stock, the restrictions on such shares of common stock lapse, the shares are no longer subject to forfeiture, all ordinary dividends otherwise payable during the vesting period are remitted to the award holder, and the shares are considered issued and outstanding.

        Through March 31, 2010, there have been multiple grants of non-vested restricted common stock. Grants made at the time of the initial public offering ("IPO") either vested in full on January 5, 2009,

15

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 9—COMPENSATION PLANS (Continued)

vest one-fourth on each of the first four anniversary dates of the grant, or, in the case of the grant made to one executive officer, vest on a graded schedule through February 2011. The grants made at the time of the IPO were, in most instances, designed to reward certain individuals for their historical service to Intrepid and for the successful completion of the IPO, as well as to retain and provide an incentive to those receiving the awards to continue to execute Intrepid's long-term business plan. Additionally, awards have been made from time to time to newly-hired employees; these awards have typically had a two to four-year vesting schedule. In the first quarters of 2010 and 2009, the Compensation Committee of Intrepid's Board of Directors approved awards of non-vested restricted common stock to some of Intrepid's executive management and other selected employees under an annual awards program. These awards vest one-third on each of the first three anniversary dates of the grant.

        In measuring compensation expense associated with the grant of shares of non-vested restricted common stock, Intrepid uses the fair value of the award, determined as the closing stock price for Intrepid's common stock on the grant date. Compensation expense is recorded monthly over the vesting period of the award. Total compensation expense related to the non-vested restricted common stock awards for the quarters ended March 31, 2010, and 2009, was $0.8 million and $0.3 million, respectively. Such amounts were net of estimated forfeiture adjustments. As of March 31, 2010, there was $6.7 million of total remaining unrecognized compensation expense related to non-vested restricted common stock awards that will be expensed through 2013.

        A summary of Intrepid's non-vested restricted common stock activity for the period from December 31, 2009, to March 31, 2010, is as follows:

Non-qualified Stock Options

        Under the 2008 Plan, the Compensation Committee of Intrepid's Board of Directors approved the award of non-qualified stock options in the first quarters of 2010 and 2009 to some of Intrepid's executive management and other selected employees under an annual awards program. Generally, one-third of each stock option award vests on each of the three anniversary dates of the grant. Options granted in 2010 and 2009 have exercise prices of $25.47 and $20.80, respectively, per share for Intrepid's common stock and a ten-year option life. In measuring compensation expense for these grants of options, Intrepid estimated the fair value of the awards on the grant date using the Black-Scholes option valuation model. Option valuation models require the input of highly subjective assumptions, including the expected volatility of the price of the underlying stock.

16

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 9—COMPENSATION PLANS (Continued)

        The following assumptions were used to compute the weighted average fair value of options granted in the periods presented:

        Intrepid's computation of the estimated volatility above is based on the historical volatility of its own common stock since the IPO as well as the volatility of three peer companies' common stock over the expected option life. The peer companies selected had volatility that was correlated to Intrepid's common stock from the date of the IPO to the dates of grant. These proxies were utilized because Intrepid has insufficient trading history to calculate a meaningful long-term volatility factor. The computation of expected option life was determined based on a reasonable expectation of the average life prior to exercise or expiration, giving consideration to the overall vesting period and contractual terms of the awards. The risk free interest rates for periods that matched the option award's expected life were based on the U.S. Treasury constant maturity yield at the time of grant over the expected option life.

        For the three months ended March 31, 2010, and 2009, Intrepid recognized stock-based compensation related to stock options of approximately $221,000 and $36,000, respectively. As of March 31, 2010, there was $2.5 million of total remaining unrecognized compensation expense related to unvested non-qualified stock options that will be expensed through 2013. A summary of Intrepid's stock option activity for the three months ended March 31, 2010, is as follows:

(1)

The intrinsic value of a stock option is the amount by which the market value exceeds the exercise price as of the end of the period presented.

17

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 10—INCOME TAXES

        Income tax expense was $7.7 million and the estimated annual effective tax rate was 39.3 percent for the three months ended March 31, 2010. For the three months ended March 31, 2009, income tax expense was $15.2 million and the estimated annual effective tax rate was 38.1 percent. Intrepid's estimated annual effective tax rate is impacted primarily by the amount of taxable income associated with each jurisdiction in which Intrepid's income is subject to tax, permanent differences between the financial statement carrying amounts and tax bases of assets and liabilities, and the benefit associated with the estimated effect of the domestic production activities deduction. Income tax expense for the three month periods ended March 31, 2010, and 2009 differs from the amounts that would be provided by applying the statutory U.S. federal income tax rate to income before income taxes primarily as a result of the estimated effect of the domestic production activities deduction, percentage depletion, and state income taxes. Intrepid's income tax provision is comprised of the elements below (in thousands).

        At March 31, 2010, there were no material uncertain tax positions that would impact Intrepid's estimated annual effective tax rate. Therefore, no liabilities have been recognized, and no provisions have been made for interest or penalties related to uncertain tax positions.

Note 11—COMMITMENTS AND CONTINGENCIES

        Marketing Agreements—In 2004, NM entered into a marketing agreement appointing PCS Sales (USA), Inc. ("PCS Sales") its exclusive sales representative for export potash sales, with the exception of sales to Canada and Mexico, and appointing PCS Sales as non-exclusive sales representative for potash sales into Mexico. Trio™ is also marketed under this arrangement. This agreement is cancelable with thirty days written notice.

        In 2004, Wendover entered into a sales agreement with Envirotech Services, Inc. ("ESI") appointing ESI its exclusive distributor, subject to certain conditions, for magnesium chloride produced by Wendover, with the exception of up to 15,000 tons per year sold for applications other than dust control, de-icing, and soil stabilization. This agreement is cancelable with two years' written notice, unless a breach or other specified special event has occurred. Sales prices were specified to ESI in the agreement subject to cost-based escalators. Wendover also participates in excess profits, as defined by the agreement, earned by ESI upon resale. Such excess profits are settled after ESI's fiscal year end in September; however, Intrepid estimates and recognizes earned excess profits each quarter as the amounts are earned and reasonably determinable.

        Reclamation Deposits & Surety Bonds—As of March 31, 2010, Intrepid had $8.7 million of security placed principally with the State of Utah and the BLM for eventual reclamation of its various facilities. Of this total requirement, $2.5 million consisted of long-term restricted cash deposits reflected in "Other" long-term assets on the balance sheet, and $6.2 million was secured by surety bonds issued by an insurer.

18

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 11—COMMITMENTS AND CONTINGENCIES (Continued)

        Intrepid may be required to post additional security to fund future reclamation obligations as reclamation plans are updated or if governmental entities change requirements.

        Health Care Costs—Intrepid is self-insured, subject to a stop-loss policy, for its employees' health care costs. The estimated liability for outstanding medical costs has been based on the historical pattern of claim settlements. The medical-claims liability included in accrued liabilities was approximately $1.3 million as of March 31, 2010, and $1.0 million as of December 31, 2009.

        Legal—Intrepid is subject to litigation. Intrepid has determined that there are no material claims outstanding as of March 31, 2010, and has provided for any estimated amounts, which in total are not material.

        Future Operating Lease Commitments—Intrepid has certain operating leases for land, mining and other operating equipment, an airplane, offices, railcars, and vehicles, with original terms ranging up to twenty years.

        Rental and lease expenses follow for the indicated periods (in thousands):

        Refundable Credit—During the fourth quarter of 2009, Intrepid applied for a refundable credit of approximately $4.5 million with a state taxing authority, and the application is currently being audited by the state. After conclusion of the state's audit, Intrepid will receive notification that the state will grant all, or a portion, of the amount on the application forms. If the state does approve all, or a portion, of the credit, it is anticipated that Intrepid will record a portion as a reduction of capital costs, inventory value, and other income. It is anticipated that the completion of state review and subsequent issuance of any approved refundable credit to Intrepid will occur sometime in the second or third quarter of 2010. No amounts associated with this potential credit, or potential cash receipt amounts related to this state filing, have been included in Intrepid's consolidated financial statements for the three months ended March 31, 2010.

Note 12—DERIVATIVE FINANCIAL INSTRUMENTS

        Intrepid is exposed to global market risks, including the effect of changes in commodity prices and interest rates, and uses derivatives to manage financial exposures that occur in the normal course of business. Intrepid does not enter into or hold derivatives for trading purposes. While all derivatives are used for risk management purposes and were originally entered into as economic hedges, they have not been designated as hedging instruments.

Interest Rates

        Intrepid's predecessor historically managed a portion of its floating interest rate exposure through the use of interest rate derivative contracts. Forward LIBOR-based contracts reduced the predecessor's risk from interest rate movements as gains and losses on such contracts partially offset the impact of changes in its variable-rate debt. Although Intrepid repaid its assumed debt obligations immediately

19

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 12—DERIVATIVE FINANCIAL INSTRUMENTS (Continued)

subsequent to the closing of its IPO, it has not yet closed its positions in the derivative financial instruments that were also assumed from the predecessor.

        A tabular presentation of the outstanding interest rate derivatives as of March 31, 2010, follows:

Natural Gas

        From time to time, Intrepid manages a portion of its exposure to movements in the market price of natural gas through the use of natural gas derivative contracts. Intrepid's forward purchase contracts reduce its risk from movements in the cost of natural gas consumed as gains and losses on such financial contracts offset losses and gains on its physical purchases of natural gas. Intrepid had no natural gas derivative contracts outstanding at March 31, 2010.

        The following table presents the fair values of the derivative instruments included within the consolidated balance sheet as of (in thousands):

20

Table of Contents

INTREPID POTASH, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(UNAUDITED)

Note 12—DERIVATIVE FINANCIAL INSTRUMENTS (Continued)