Basis of Presentation and Consolidation

The consolidated financial statements include the accounts of Mobile Mini and its wholly owned subsidiaries. The Company does not have any subsidiaries in which it does not own 100% of the outstanding stock. All significant intercompany balances and transactions have been eliminated. The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) applicable to interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. In the opinion of management of Mobile Mini, Inc., all adjustments (which include normal recurring adjustments) necessary to present fairly the financial position, results of operations, and cash flows for all periods presented have been made. The results of operations for the three months ended March 31, 2015 and 2014 are not necessarily indicative of the results to be expected for the full year.

These condensed consolidated financial statements should be read in conjunction with the Company’s December 31, 2014 audited consolidated financial statements and accompanying notes thereto, which are included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on February 27, 2015.

Recent Accounting Pronouncements

Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. In April 2014, the Financial Accounting Standards Board (“FASB”) issued the accounting guidance on reporting discontinued operations and disclosures of disposals of components of an entity. The new guidance raises the threshold for a disposal to qualify as a discontinued operation and requires new disclosures of both discontinued operations and certain other disposals that do not meet the definition of a discontinued operation. The guidance is effective for fiscal years beginning after December 15, 2014. The Company will apply this guidance prospectively to transactions occurring after December 31, 2014.

Revenue from Contracts with Customers. In May 2014, FASB issued the accounting standard on revenue from contracts with customers. The standard provides a single model for revenue arising from contracts with customers and supersedes current revenue recognition guidance. The standard requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of goods or services. The standard is effective for annual and interim periods beginning after December 15, 2016. Early adoption is not permitted. The revenue recognition standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the impact, if any, of the adoption of the standard to its financial statements and related disclosures. The Company has not yet selected a transition method nor determined the effect of the standard on its ongoing financial reporting.

Simplifying the Presentation of Debt Issuance Costs. In April 2015, FASB issued accounting guidance on the presentation of debt issuance costs in the balance sheet. This standard requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by this guidance. The Company will apply this guidance prospectively beginning in the fiscal year ended December 31, 2017. The application of this guidance will result in a reclassification of debt financing costs from other assets to a reduction of the specific debt liability, and will not affect the Company’s statement of operations or cash flow. As of March 31, 2015, the Company’s debt financing costs, net of accumulated amortization is $8.0 million.

Basic (loss) earnings per share (“EPS”) is calculated by dividing net (loss) income by the weighted average number of common shares outstanding during the period. Diluted EPS is calculated under the treasury stock method. Potential common shares included nonvested share-awards, which is subject to risk of forfeiture, and incremental shares of common stock issuable upon the exercise of stock options.

Rental fleet is capitalized at cost and depreciated over the estimated useful life of the unit using the straight-line method. Rental fleet is depreciated whether or not it is out on rent. Capitalized cost of rental fleet includes the price paid to acquire the unit and freight charges to the location when the unit is first placed in service, and when applicable, the cost of manufacturing or remanufacturing, which includes the cost of customizing units. Ordinary repair and maintenance costs are charged to operations as incurred.

Management periodically reviews depreciable lives and residual values against various factors, including the results of its lenders’ independent appraisal of rental fleet, practices of competitors in comparable industries, profit margins achieved on sales of depreciated units and rental rates obtained on older units.

The Company uses a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon ultimate settlement.