(1) BUSINESS AND BASIS OF PRESENTATION

Business

Zayo Group Holdings, Inc., a Delaware corporation, was formed on November 13, 2007, and is the parent company of a number of subsidiaries engaged in bandwidth infrastructure services. Zayo Group Holdings, Inc. and its subsidiaries are collectively referred to as “Zayo Group Holdings” or the “Company.” The Company’s primary operating subsidiary is Zayo Group, LLC (“ZGL”). Headquartered in Boulder, Colorado, the Company operates bandwidth infrastructure assets, including fiber networks and datacenters, in the United States and Europe to offer:

Dark Fiber Solutions, including dark fiber and mobile infrastructure services.

Colocation and Cloud Infrastructure, including Cloud and Colocation services.

Network Connectivity, wavelengths, Ethernet, IP and SONET services.

Other services, including Zayo Professional Services (“ZPS”).

The Company’s shares are listed on the New York Stock Exchange (NYSE) under the ticker symbol “ZAYO”.

Basis of Presentation

The accompanying condensed consolidated financial statements include all the accounts of the Company and its wholly-owned subsidiaries. All inter-company accounts and transactions have been eliminated in consolidation. The accompanying condensed consolidated financial statements and related notes are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial reporting and pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for quarterly reports on Form 10-Q, and do not include all of the note disclosures required by GAAP for complete financial statements. These condensed consolidated financial statements should, therefore, be read in conjunction with the consolidated financial statements and notes thereto for the year ended June 30, 2015 included in the Company’s Annual Report on Form 10-K for the year ended June 30, 2015. In the opinion of management, all adjustments considered necessary for a fair presentation of financial position, results of operations and cash flows of the Company have been included herein. The results of operations for the three and six months periods ended December 31, 2015 are not necessarily indicative of the operating results for any future interim period or the full year.

The Company’s fiscal year ends June 30 each year, and we refer to the fiscal year ended June 30, 2015 as “Fiscal 2015” and the fiscal year ending June 30, 2016 as “Fiscal 2016.”

Earnings or Loss per Share

Basic earnings or loss per share attributable to the Company’s common shareholders is computed by dividing net earnings or loss attributable to common shareholders by the weighted average number of common shares outstanding for the period. Diluted earnings or loss per share attributable to common shareholders presents the dilutive effect, if any, on a per share basis of potential common shares (such as restricted stock units) as if they had been vested or converted during the periods presented. No such items were included in the computation of diluted loss per share for the three and six months ended December 31, 2015 or the six months ended December 31, 2014 as the Company incurred a loss from continuing operations in those periods and the effect of inclusion would have been anti-dilutive.

The effect of 146,001 shares reserved for Part A restricted stock units and 2,210,534 shares reserved for Part B restricted stock units outstanding at December 31, 2014 were included in the computation of diluted income per share for the three months ended December 31, 2014.

Significant Accounting Policies

There have been no changes to the Company’s significant accounting policies described in its Annual Report on Form 10-K for the year ended June 30, 2015.

Use of Estimates

The preparation of the Company’s condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Significant estimates are used when establishing allowances for doubtful accounts and accruals for billing disputes, determining useful lives for depreciation and amortization and accruals for exit activities associated with real estate leases, assessing the need for impairment charges (including those related to intangible assets and goodwill), determining the fair values of assets acquired and liabilities assumed in business combinations, accounting for income taxes and related valuation allowances against deferred tax assets and estimating the restricted stock unit grant fair values used to compute the stock-based compensation liability and expense. Management evaluates these estimates and judgments on an ongoing basis and makes estimates based on historical experience, current conditions, and various other assumptions that are believed to be reasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities as well as identifying and assessing the accounting treatment with respect to commitments and contingencies. Actual results may differ from these estimates under different assumptions or conditions.

Recently Issued Accounting Pronouncements

In September 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2015-17, Balance Sheet Classification of Deferred Taxes, which requires an entity to present deferred tax liabilities and assets as noncurrent. The ASU will replace the current classification and presentation requirements for deferred tax assets and liabilities. Early adoption is permitted as of the original effective date or annual reporting periods and interim reporting periods within annual reporting periods beginning after December 15, 2016. The Company has not yet adopted ASU 2015-17 and it is not expected to have a material effect on the Company’s financial statements.

In September 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments, which requires acquirers who have reported provisional amounts for items in a business combination to recognize adjustments to provisional amounts that are identified during the measurement period, in the reporting period in which the adjustments are determined. The ASU also requires that the acquirer record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. Prior to the issuance of ASU 2015-16, adjustments to provisional amounts were required to be retrospectively adjusted. The Company prospectively early-adopted ASU 2015-16 effective July 1, 2015. The adoption of this standard did not have a material impact on the financial statements.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in GAAP when it becomes effective. In July 2015, the FASB deferred the effective date to annual reporting periods and interim reporting periods within annual reporting periods beginning after December 15, 2017. Early adoption is permitted as of the original effective date or annual reporting periods and interim reporting periods within annual reporting periods beginning after December 15, 2016. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.