Exhibit 99.1 ADTRAN, Inc. Reports Second Quarter 2006 Results, Declares Quarterly Cash Dividend and Announces Additional Five Million Share Repurchase Plan HUNTSVILLE, Ala.--(BUSINESS WIRE)--July 17, 2006--ADTRAN, Inc. (NASDAQ:ADTN) reported results for the second quarter of 2006. Sales increased to $122,296,000 for the quarter compared to $118,873,000 for the second quarter of 2005. Non-GAAP net income increased to $22,619,000 for the quarter compared to GAAP net income of $20,719,000 for the second quarter of 2005. Non-GAAP earnings per share, assuming dilution, were $0.29 for the quarter compared to GAAP earnings per share, assuming dilution, of $0.27 for the second quarter of 2005. For the quarter, GAAP net income was $20,814,000 and GAAP earnings per share, assuming dilution, were $0.27. Non-GAAP net income and non-GAAP earnings per share for the second quarter exclude the effect of stock compensation expense resulting from the application of Statement of Financial Accounting Standards No. 123R, Share-Based Payment ("SFAS 123R"). SFAS 123R was adopted on a modified prospective basis effective January 1, 2006. See the table below for reconciliation between non-GAAP and GAAP net income and earnings per share. For the quarter, gross margin increased to 59.2% compared to 58.5% for the second quarter of 2005. ADTRAN Chief Executive Officer Tom Stanton stated, "During the quarter, HDSL revenues returned to normal levels and we continued to see the results of share gains in North America with our Broadband Access and Optical Access products. Our outlook for the Company remains very positive as we continue to build momentum in our primary growth areas." The Company also announced that its Board of Directors has authorized the repurchase of an additional 5,000,000 shares of the Company's common stock to commence upon completion of the repurchase plan announced February 11, 2005. During the second quarter of 2006, the Company repurchased 3,355,000 shares of its common stock under the February 2005 plan. There are 1,359,000 shares remaining to be repurchased under the February 2005 plan. Upon completion of the current plan, the new plan will be implemented through open market purchases from time to time as conditions warrant. The Company also announced that its Board of Directors declared a cash dividend for the second quarter of 2006. The quarterly cash dividend is $0.09 per common share to be paid to holders of record at the close of business on August 4, 2006. The ex-dividend date is August 2, 2006 and the payment date is August 18, 2006. The Company also confirmed that its second quarter conference call will be held Tuesday, July 18 at 9:30 a.m. Central Time. Guidance for the third quarter and year 2006 will be issued during this conference call. This conference call will be web cast live through StreetEvents.com. To listen, simply visit the Investor Relations site at http://www.adtran.com or http://streetevents.com approximately 10 minutes prior to the start of the call and click on the conference call link provided. An online replay of the conference call will be available for seven days at http://streetevents.com. In addition, an online replay of the conference call, as well as the text of the Company's earnings release, will be available on the Investor Relations site at http://www.adtran.com for at least 12 months following the call. ADTRAN, Inc. is one of the world's most successful network access equipment suppliers, with an 18-year history of profitability and a portfolio of more than 1,400 solutions for use in the last mile of today's telecommunications networks. Widely deployed by carriers and enterprises alike, ADTRAN solutions enable voice, data, video, and Internet communications across copper, fiber, and wireless network infrastructures. ADTRAN solutions are currently in use by every major U.S. service provider and many global ones, as well as by thousands of public, private and governmental organizations worldwide. For more information, contact the company at 800 9ADTRAN (800 923-8726) or via email at info@adtran.com. On the Web, visit www.adtran.com. This press release contains forward-looking statements which reflect management's best judgment based on factors currently known. However, these statements involve risks and uncertainties, including the successful development and market acceptance of new products, the degree of competition in the market for such products, the product and channel mix, component costs, manufacturing efficiencies, and other risks detailed in our annual report on Form 10-K for the year ended December 31, 2005. These risks and uncertainties could cause actual results to differ materially from those in the forward-looking statements included in this press release. This release includes non-GAAP net income, non-GAAP earnings per share data, and other non-GAAP line items from the Non-GAAP Information table in this release, including costs of sales, gross profit, selling, general and administrative expenses, research and development expenses, profit from operations, income before provision for income taxes and provision for income taxes. These measures exclude the effect of stock compensation expense for employee stock options associated with the application of SFAS 123R, which ADTRAN adopted effective January 1, 2006. These measures are not in accordance with, or an alternative for, generally accepted accounting principles and may be different from non-GAAP measures used by other companies. ADTRAN believes that the presentation of the non-GAAP measures, when shown in conjunction with the corresponding GAAP measures, provides useful information to management and investors regarding financial and business trends relating to its financial condition and results of operations. ADTRAN further believes that where adjustments used in calculating non-GAAP net income and non-GAAP earnings per share are based on specific, identified charges that impact different line items in the statements of income, it is useful to investors to know how these specific line items are affected by these adjustments. In particular, as ADTRAN begins to apply SFAS 123R, it believes that it is useful to investors to understand how the expenses associated with the application of SFAS 123R are reflected in its results of operations. The presentation of these non-GAAP measures permits both investors and management to more readily compare past results, which do not include the impact of SFAS 123R, with future results, and to better understand ADTRAN's performance over the periods presented. Condensed Balance Sheet June 30, 2006 Unaudited (In thousands) June 30, 2006 ------------- Assets Cash & cash equivalents $34,668 Short-term investments 159,605 Accounts receivable (net) 64,687 Other receivables 4,694 Inventory (net) 47,201 Prepaid expenses and other current assets 9,780 ------------- Total current assets 320,635 Equipment (net) 19,691 Land 4,263 Bldg. & land improvements (net) 59,124 Other assets 499 Long-term investments 190,299 ------------- Total long-term assets 273,876 ------------- Total assets $594,511 ============= Liabilities and stockholders' equity Accounts payable $26,997 Accrued wages and benefits 9,483 Accrued liabilities 13,467 ------------- Total current liabilities 49,947 Deferred tax liabilities 1,576 Other non-current liabilities 4,567 Long term-debt 50,000 ------------- Total long-term liabilities 56,143 Total liabilities 106,090 Stockholders' equity 488,421 ------------- ------------- Total liabilities and stockholders' equity $594,511 ============= Condensed Statements of Income For the three and six month periods ended June 30, 2006 and 2005 (In thousands, except per share data) Unaudited Three Months Ended Year to Date Ended June 30, June 30, June 30, June 30, 2006 2005 2006 2005 ---------- ---------- ---------- ---------- Sales $122,296 $118,873 $230,944 $223,450 Cost of Sales 49,865 49,327 94,005 93,676 ---------- ---------- ---------- ---------- Gross Profit 72,431 69,546 136,939 129,774 Selling, general and administrative expenses 26,444 24,297 51,210 47,246 Research and development expenses 17,469 16,367 35,235 32,710 ---------- ---------- ---------- ---------- Profit from operations 28,518 28,882 50,494 49,818 Interest expense (633) (625) (1,267) (1,208) Other income, net 4,397 2,995 8,513 5,843 ---------- ---------- ---------- ---------- Income before provision for income taxes 32,282 31,252 57,740 54,453 Provision for income taxes (11,468) (10,533) (20,671) (18,514) ---------- ---------- ---------- ---------- Net income (1) $20,814 $20,719 $37,069 $35,939 ========== ========== ========== ========== Weighted average shares Basic 75,324 75,341 75,986 75,543 Diluted (2) 77,284 77,495 78,098 77,437 Earnings per common share Basic $0.28 $0.28 $0.49 $0.48 Diluted (2) $0.27 $0.27 $0.47 $0.46 (1) Net income for the three and six months ended June 30, 2006 included stock-based compensation expense recognized related to stock options, net of tax, of $1.8 million and $3.5 million, respectively, under SFAS 123(R). There was no stock-based compensation expense related to stock options under SFAS 123 in the three and six month period ended June 30, 2005 because we did not adopt the recognition provisions of SFAS 123. (2) Assumes exercise of dilutive stock options calculated under the treasury stock method. Non-GAAP Information (1) (2) For the three and six month periods ended June 30, 2006 and 2005 (In thousands, except per share data) Unaudited Non-GAAP (excludes effects of Effects of SFAS 123R) SFAS 123R GAAP GAAP Three Months Three Months Three Months Three Months Ended Ended Ended Ended June 30, June 30, June 30, June 30, 2006 2006 2006 2005 ------------ ------------ ------------ ------------ Sales $122,296 $0 $122,296 $118,873 Cost of Sales (a) 49,778 87 49,865 49,327 ------------ ------------ ------------ ------------ Gross Profit (a) 72,518 87 72,431 69,546 Selling, general and administrative expenses (a) 25,441 1,003 26,444 24,297 Research and development expenses (a) 16,497 972 17,469 16,367 ------------ ------------ ------------ ------------ Profit from operations (a) 30,580 2,062 28,518 28,882 Interest expense (633) 0 (633) (625) Other income, net 4,397 0 4,397 2,995 ------------ ------------ ------------ ------------ Income before provision for income taxes (a) 34,344 2,062 32,282 31,252 Provision for income taxes (b) (11,725) (257) (11,468) (10,533) ------------ ------------ ------------ ------------ Net income (a)(b) $22,619 $1,805 $20,814 $20,719 ============ ============ ============ ============ Weighted average shares Basic 75,324 75,324 75,324 75,341 Diluted (3) 77,161 77,284 77,284 77,495 Earnings per common share Basic $0.30 ($0.02) $0.28 $0.28 Diluted (3) $0.29 ($0.02) $0.27 $0.27 Non-GAAP (excludes effects of Effects of SFAS 123R) SFAS 123R GAAP GAAP Six Months Six Months Six Months Six Months Ended Ended Ended Ended June 30, June 30, June 30, June 30, 2006 2006 2006 2005 ------------ ------------ ------------ ------------ Sales $230,944 $0 $230,944 $223,450 Cost of Sales (a) 93,835 170 94,005 93,676 ------------ ------------ ------------ ------------ Gross Profit (a) 137,109 170 136,939 129,774 Selling, general and administrative expenses (a) 49,250 1,960 51,210 47,246 Research and development expenses (a) 33,336 1,899 35,235 32,710 ------------ ------------ ------------ ------------ Profit from operations (a) 54,523 4,029 50,494 49,818 Interest expense (1,267) 0 (1,267) (1,208) Other income, net 8,513 0 8,513 5,843 ------------ ------------ ------------ ------------ Income before provision for income taxes (a) 61,769 4,029 57,740 54,453 Provision for income taxes (b) (21,184) (513) (20,671) (18,514) ------------ ------------ ------------ ------------ Net income (a)(b) $40,585 $3,516 $37,069 $35,939 ============ ============ ============ ============ Weighted average shares Basic 75,986 75,986 75,986 75,543 Diluted (3) 78,026 78,098 78,098 77,437 Earnings per common share Basic $0.53 ($0.04) $0.49 $0.48 Diluted (3) $0.52 ($0.05) $0.47 $0.46 (1) A reconciliation between net income on a GAAP basis and non-GAAP net income including items (a) through (b) is provided in the table below. (2) There was no stock-based compensation expense recorded in fiscal 2005, as we had adopted the footnote disclosure only provision of SFAS 123. (3) Assumes exercise of dilutive stock options calculated under the treasury stock method. RECONCILIATION OF GAAP TO NON-GAAP NET INCOME AND EARNINGS PER SHARE (In thousands) Quarter Quarter Year to Year to Ended Ended Date Date June 30, June 30, June 30, June 30, 2006 2005 2006 2005 GAAP Net Income $20,814 $20,719 $37,069 $35,939 (a) Stock-based compensation expense related to stock options (1) 2,062 0 4,029 0 (b) Income tax effect of stock- based compensation expense (257) 0 (513) 0 -------- -------- -------- -------- Non-GAAP Net Income $22,619 $20,719 $40,585 $35,939 ======== ======== ======== ======== GAAP Earnings per common share - diluted $0.27 $0.27 $0.47 $0.46 Per share effect of stock-based compensation expense $0.02 N/A $0.05 N/A -------- -------- -------- -------- Non-GAAP Earnings per common share - diluted $0.29 $0.27 $0.52 $0.46 ======== ======== ======== ======== (1) For the three months ended June 30, 2006, stock-based compensation expense was allocated as follows: $87 to cost of sales expense, $1,003 to selling, general and administrative expense, and $972 to research and development expense. For the six months ended June 30, 2006, stock-based compensation expense was allocated as follows: $170 to cost of sales expense, $1,960 to selling, general and administrative expense, and $1,899 to research and development expense. COMPARISON OF NET INCOME INCLUDING THE EFFECT OF STOCK-BASED COMPENSATION EXPENSE RELATED TO EMPLOYEE STOCK OPTIONS UNDER SFAS 123(R) and SFAS 123 (1) (In thousands) Quarter Ended Year to Date June 30, June 30, June 30, June 30, 2006 2005 2006 2005 Net Income as reported $20,814 $20,719 $37,069 $35,939 Plus: total stock-based compensation included in the determination of reported 1,805 - 3,516 - net income, net of tax Less: total stock-based compensation expense determined under fair value based method for all awards, net of tax (1,805) (2,039) (3,516) (4,270) -------- -------- ----------------- Non-GAAP net income for calculation of diluted earnings per share $20,814 $18,680 $37,069 $31,669 ======== ======== ================= Earnings per share Diluted - as reported $0.27 $0.27 $0.47 $0.46 Diluted - non-GAAP n/a $0.24 n/a $0.41 (1) Stock-based compensation expense prior to January 1, 2006 is based on the pro forma application of SFAS 123. Net income and net income per share prior to January 1, 2006 did not include stock-based compensation for stock options because ADTRAN did not adopt the recognition provisions of SFAS 123. CONTACT: ADTRAN, Inc. Jim Matthews, 256-963-8775 or Investor Services/Assistance: Gayle Ellis, 256-963-8220