1.Description of the business and recent developments:

Reorganization and merger

On May 15, 2014, pursuant to the Agreement and Plan of Reorganization (the “Merger Agreement”) by and among Cogent Communications Group, Inc. (“Group”), a Delaware corporation, Cogent Communications Holdings, Inc., a Delaware corporation (“Holdings”) and Cogent Communications Merger Sub, Inc., a Delaware corporation (“Merger Sub”), Group adopted a new holding company organizational structure whereby Group is now a wholly owned subsidiary of Holdings. Holdings is a “successor issuer” to Group pursuant to Rule 12g-3(a) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). In connection with the succession, the common stock of Holdings is deemed to be registered under Section 12(b) of the Exchange Act by operation of law.

References to the “Company” for events that occurred prior to May 15, 2014 refer to Cogent Communications Group, Inc. and its subsidiaries and on and after May 15, 2014 the “Company” refers to Cogent Communications Holdings, Inc. and its subsidiaries.

Description of business

The Company is a Delaware corporation and is headquartered in Washington, DC. The Company is a facilities-based provider of low-cost, high-speed Internet access and Internet Protocol (“IP”) communications services. The Company’s network is specifically designed and optimized to transmit data using IP. The Company delivers its services primarily to small and medium-sized businesses, communications service providers and other bandwidth-intensive organizations in North America, Europe and Japan.

The Company offers on-net Internet access services exclusively through its own facilities, which run from its network to its customers’ premises. The Company is not dependent on local telephone companies to serve its customers for its on-net Internet access services because of its integrated network architecture. The Company offers its on-net services to customers located in buildings that are physically connected to its network. The Company’s on-net service consists of high-speed Internet access and IP connectivity ranging from 100 Megabits per second to 100 Gigabits per second of bandwidth. The Company provides its on-net Internet access services to its net-centric and corporate customers. The Company’s net-centric customers include bandwidth-intensive users such as universities, other Internet service providers, telephone companies, cable television companies, web hosting companies, content delivery network companies and commercial content and application service providers. These net-centric customers obtain the Company’s services in colocation facilities and in the Company’s data centers. The Company operates data centers throughout North America and Europe that allow its customers to collocate their equipment and access the Company’s network. The Company’s corporate customers are located in multi-tenant office buildings and typically include law firms, financial services firms, advertising and marketing firms and other professional services businesses.

In addition to providing its on-net services, the Company provides Internet connectivity to customers that are not located in buildings directly connected to its network. The Company provides this off-net service primarily to corporate customers in North America using other carriers’ facilities to provide the “last mile” portion of the link from the customers’ premises to the Company’s network. The Company also provides certain non-core services that resulted from acquisitions. The Company continues to support but does not actively sell these non-core services.

Basis of presentation

The accompanying unaudited condensed consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission. In the opinion of management, the unaudited condensed consolidated financial statements reflect all normal recurring adjustments that the Company considers necessary for the fair presentation of its results of operations and cash flows for the interim periods covered, and of the financial position of the Company at the date of the interim condensed consolidated balance sheet. Certain information and footnote disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations. The operating results for interim periods are not necessarily indicative of the operating results for the entire year. While the Company believes that the disclosures are adequate to not make the information misleading, these interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in its 2014 annual report on Form 10-K.

The accompanying unaudited consolidated financial statements include all wholly-owned subsidiaries. All inter-company accounts and activity have been eliminated.

Use of estimates

The preparation of consolidated financial statements in conformity with United States generally accepted accounting principles 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 consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results may differ from these estimates.

Financial instruments

At June 30, 2015, the carrying amount of cash and cash equivalents, accounts receivable, prepaid and other current assets, accounts payable and accrued expenses approximated fair value because of the short-term nature of these instruments. The Company measures its cash equivalents at amortized cost, which approximates fair value based upon quoted market prices (Level 1). Based upon recent trading prices (Level 2 — market approach) at June 30, 2015 the fair value of the Company’s $200.0 million senior unsecured notes was $190.8 million and the fair value of the Company’s $250.0 million senior secured notes was $247.5 million.

The Company was party to letters of credit totaling $0.4 million as of June 30, 2015. These letters of credit are secured by investments that are restricted and included in other assets.

Basic and diluted net income (loss) per common share

Basic earnings per share (“EPS”) excludes dilution for common stock equivalents and is computed by dividing net income or (loss) available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted EPS is based on the weighted-average number of shares of common stock outstanding during each period, adjusted for the effect of dilutive common stock equivalents.

Shares of restricted stock are included in the computation of basic EPS as they vest and are included in diluted EPS, to the extent they are dilutive, determined using the treasury stock method. As of June 30, 2015 and 2014, 1.1 million and 0.8 million unvested shares of restricted common stock, respectively, are not included in the computation of basic income per share, as these shares were not vested. Using the “if-converted” method, the shares issuable upon conversion of the Company’s convertible senior notes (the “Convertible Notes”) were anti-dilutive for the three months ended June 30, 2014. Accordingly, that impact has been excluded from the computation of diluted loss per share. The Convertible Notes were repaid in June 2014 and are no longer outstanding. Anti-dilutive stock options and restricted shares excluded from diluted weighted average shares were 120,553 and 369,243 as of June 30, 2015 and 46,226 and 1,200 as of June 30, 2014, respectively. For the three and six months ended June 30, 2015 and 2014, the Company’s employees exercised options for 6,165, 12,624, 15,278 and 25,035 common shares, respectively.

The following details the determination of diluted weighted average shares:

	Three Months Ended June 30, 2015	Three Months Ended June 30, 2014	Six Months Ended June 30, 2014
Weighted average common shares - basic	44,774,831	45,897,449	46,200,844
Dilutive effect of stock options	42,749	59,270	68,504
Dilutive effect of restricted stock	236,927	338,247	379,067

Weighted average common shares - diluted	45,054,507	46,294,966	46,648,415

Recent Accounting Pronouncements

On May 28, 2014, the FASB issued ASU No. 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 U.S. GAAP when it becomes effective. The new standard is effective for the Company beginning on January 1, 2018. Early application is not permitted. 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.

In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest — Simplifying the Presentation of Debt Issuance Costs . The ASU will require debt issuance costs to be presented as a deduction from the corresponding debt liability making the presentation of debt costs consistent with the presentation of debt discounts or premiums. The new standard is effective for the Company on January 1, 2016 and the ASU must be applied retrospectively to all prior periods.