UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

FORM 10-Q

(Mark One)

Commission file number 0-5423

DYCOM INDUSTRIES, INC.

Registrant’s telephone number, including area code: (561) 627-7171

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.

Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Exchange Act).

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

DYCOM INDUSTRIES, INC.

INDEX

DYCOM INDUSTRIES, INC. AND SUBSIDIARIES

See notes to condensed consolidated financial statements—unaudited.

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DYCOM INDUSTRIES, INC. AND SUBSIDIARIES

See notes to condensed consolidated financial statements—unaudited.

4

DYCOM INDUSTRIES, INC. AND SUBSIDIARIES

See notes to condensed consolidated financial statements—unaudited.

5

DYCOM INDUSTRIES, INC. AND SUBSIDIARIES

See notes to condensed consolidated financial statements— unaudited.

6

DYCOM INDUSTRIES, INC. AND SUBSIDIARIES

See notes to condensed consolidated financial statements—unaudited.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS—Unaudited

1. Basis of Presentation

     Dycom Industries, Inc. (“Dycom” or the “Company”) is a leading provider of specialty contracting services throughout the United States. These services include engineering, construction, maintenance and installation services to telecommunications providers, underground locating services to various utilities including telecommunications providers, and other construction and maintenance services to electric utilities and others. The Company uses a fiscal year ending the last Saturday in July. Fiscal year 2005 consists of 52 weeks, while fiscal year 2004 consisted of 53 weeks.

     The condensed consolidated financial statements are unaudited and include the results of Dycom and its subsidiaries, all of which are wholly owned. All intercompany accounts and transactions have been eliminated. The accompanying condensed consolidated balance sheets of the Company and the related condensed consolidated statements of operations and cash flows for the three and nine months reflect all normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of such statements. The results of operations for the nine months ended April 30, 2005 are not necessarily indicative of the results that may be expected for the entire year. For a better understanding of the Company and its financial statements, the Company recommends reading these condensed consolidated financial statements in conjunction with the Company’s audited financial statements for the year ended July 31, 2004, which are included in Dycom’s 2004 Annual Report on Form 10-K, filed on October 12, 2004.

     Use of Estimates - The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. For the Company, key estimates include revenue recognition for work in progress, allowance for doubtful accounts, self-insured claims liability, valuation of goodwill and intangible assets, asset lives used in computing depreciation and amortization, including amortization of intangibles, and accounting for income taxes, contingencies and litigation. While the Company believes that such estimates are fair when considered in conjunction with the consolidated financial position and results of operations taken as a whole, the actual results could differ from those estimates and such differences may be material to the financial statements.

     Restricted Cash — At April 30, 2005 and July 31, 2004, the Company had approximately $5.2 million and $6.5 million, respectively, in restricted cash. This cash is included in other current assets and other assets on the consolidated balance sheets and is held as collateral in support of projected workers’ compensation, automobile and general liability obligations .

     Short-term Investments — Short-term investments consisted of market auction rate debt securities classified as “available for sale” securities. The Company maintains its investments with various financial institutions and minimizes its credit risk associated with investments by only investing in investment grade, liquid securities. The securities are reported at fair value and the Company uses market quotes provided by third parties to adjust the carrying value of its investments to fair value at the end of each period with any related unrealized gains and losses included as a separate component of stockholders’ equity, net of applicable taxes. Realized gains and losses and interest and dividends are included in interest income or interest expense, as appropriate. There were no material realized or unrealized gains or losses related to the securities for any of the periods presented. The Company has reclassified approximately $20.0 million of short-term investments as of July 31, 2004 that were previously presented as cash and equivalents to conform to current period presentation. Additionally, for the nine months ended April 30, 2005 and April 24, 2004, the net change in short-term investments of $20.0 million and $37.5 million, respectively, is included as a component of cash flows used in investing activities. The available for sale securities were classified as current based on the Company’s intent and practice of selling the securities at the scheduled auction dates within twelve months.

     Accounting for Stock-Based Compensation - Under Statement of Financial Accounting Standards (“SFAS”) No. 123 and No. 148, companies are permitted to continue to apply Accounting Principles Board (“APB”) Opinion No. 25. APB Opinion No. 25 recognizes compensation expense based on the intrinsic value of the equity instrument awarded. The Company continues to apply APB Opinion No. 25 to its stock-based compensation awards. The fair value of the options granted in fiscal 2005 and 2004 has been estimated at the date of grant using the Black-Scholes option-pricing model, which was developed for estimating the fair value of traded options that have no vesting restrictions and are fully transferable. The Company’s options do not have the characteristics of traded options and the option valuation models do not necessarily provide a reliable measure of the fair value as they require the use of subjective assumptions. Changes in these assumptions can materially impact the fair value of the Company’s options. No stock-based compensation cost for stock option grants is reflected in net income as all options granted had an exercise price equal to the market value of the underlying common stock on the date of grant. During the nine months ended April 30, 2005 and April 24, 2004, 922,400 and 874,676 options were granted, respectively. The pro forma weighted average fair value of options granted during the nine months ended April 30, 2005 was $19.89 per share based on a risk-free interest rate of 3.6%, an expected life of six years, expected volatility of 58.7% and no expected dividends. The pro forma weighted average fair value of options granted during the nine months ended April 24, 2004 was $14.63 per share based on a risk-free interest rate of 3.6%, an expected life of six years, expected volatility of 59.6% and no expected dividends. The pro forma disclosures required by SFAS No. 148 are presented below.

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     In December 2004, the Financial Accounting Standards Board (“FASB”) issued SFAS No. 123(R), “Share-Based Payment,” which amended SFAS No. 123. SFAS No. 123(R) requires measurement of the cost of share-based payment transactions to employees at the fair value of the award on the grant date and recognition of expense over the requisite service or vesting period. Prior to SFAS No. 123(R), only certain pro-forma disclosures of fair value were required. The pro forma compensation expense presented in the table above and in prior filings by the Company has been calculated using the Black-Scholes option pricing model. Those expenses may not be indicative of amounts which should be expected in future periods.

     In March 2005, the SEC released Staff Accounting Bulletin 107, Share Based Payments (SAB 107). The interpretations in SAB 107 express views of the SEC staff regarding the application of SFAS No. 123(R). SAB 107 provides interpretive guidance related to the interaction between SFAS No. 123(R) and certain SEC rules and regulations, as well as provides the SEC’s views regarding the valuation of share-based payment arrangements. In April 2005, the SEC adopted a new rule amending the effective dates of SFAS No. 123(R) for public companies by issuing Release 33-8568. The new rule allows registrants to implement SFAS No. 123(R) at the beginning of their next fiscal year that beings after June 15, 2005. SFAS No. 123(R) is effective for the Company in the first quarter of fiscal 2006. The Company is currently evaluating the impact of SFAS No. 123(R) and SAB 107, and believes the standard could have a material impact on the financial statements of the Company commencing in fiscal 2006.

     Comprehensive Income — During the first nine months of fiscal 2005 and fiscal 2004 the Company did not have any changes in its equity resulting from non-owner sources and, accordingly, comprehensive income was equal to the net income amounts presented for the respective periods in the accompanying Consolidated Statements of Operations.

2. Earnings Per Share

     Basic earnings per common share is computed by dividing net income by the weighted average common shares outstanding during the period. Diluted earnings per common share is computed by dividing net income by the weighted average number of common shares outstanding during the period and potentially dilutive common stock equivalents. Potential common stock equivalents that may be issued by the Company relate solely to outstanding stock options and are determined using the treasury stock method. The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computation as required by SFAS No. 128.

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