Exhibit 99.1 ARADIGM CORPORATION REPORTS SECOND QUARTER 2005 FINANCIAL RESULTS HAYWARD, Calif., July 26 /PRNewswire-FirstCall/ -- Aradigm Corporation (Nasdaq: ARDM) today announced financial results for the second quarter and six months ended June 30, 2005. The company reported contract revenues for the three months ended June 30, 2005 of $1.2 million compared to $7.1 million for the same period in 2004. This decrease is due to last quarter's closing of the restructured license agreement with Novo Nordisk on the AERx Diabetes Management System. Contract revenues for the six months ended June 30, 2005 were $8.9 million compared with $13.7 million for the same period in 2004. Revenues were derived from currently partnered AERx(R) development programs. Total operating expenses for the three months ended June 30, 2005 were $10.0 million compared to $14.6 million for the same period in 2004. For the six months ended June 30, 2005 total operating expenses were $20.3 million compared with $29.0 million for the same period in 2004. The company reported net loss for the three months ended June 30, 2005 of $8.5 million, or $0.12 per share, compared with a net loss of $7.5 million, or $0.12 per share, for the same period in 2004. The net loss for the six months ended June 30, 2005 was $10.8 million, or $0.15 per share, compared with a net loss of $15.2 million, or $0.24 per share, for the same period in 2004. As expected, the cash used in operations during the first two quarters is higher reflecting spending tied to the commercialization efforts on the Intraject Sumatriptan program. Capital expenditures for the quarter were $1.0 million, a majority of which represented scheduled purchases related to Intraject commercial production equipment and validation services. As of June 30, 2005, cash, cash equivalents and short-term investments totaled approximately $44.8 million. Recent Highlights * In June 2005, the company announced results from a self-injection study of Intraject with sumatriptan. The trial was a randomized, open-label, single-dose, crossover study evaluating the pharmacokinetics of sumatriptan at three injection sites in 24 healthy adult male and female volunteers naive to self-injection with Intraject. As compared to previous clinician- administered studies, subjects in this study were asked to dose themselves in the thigh, abdomen and arm. Results showed those who self-administered Intraject Sumatriptan achieved bioequivalent blood plasma levels to the currently marketed subcutaneous needle-injected product. * Earlier this month, the company announced that its AERx aerosolized hydroxychloroquine (HCQ) program, which is partnered with APT Pharmaceuticals, was moving into Phase 2 clinical studies. This program is examining the application of the anti-infective HCQ as a new class of treatment for asthma and chronic obstructive pulmonary disease. This follows a positive Phase 1 study in healthy volunteers, which determined that the aerosolized compound had a favorable safety profile, had a tolerable taste and exhibited an excellent pharmacokinetic profile. "We continue to be pleased with the advancements within the AERx and Intraject clinical programs of both of our systems," said Dr. Bryan Lawlis, President and Chief Executive Officer of Aradigm. "The progress that we are making in development, partnering and clinical programs encourages us to believe that our current business strategy is working." Conference Call The company will host a conference call and question and answer session today at 4:30 pm Eastern Time, 1:30 pm Pacific Time today to discuss these financial results. Dial toll-free 1-877-788-8790 to access the conference call. International callers dial +1-706-679-7281. The event webcast can be found under the investor relations section of the company's website: www.aradigm.com. The webcast and audio replay of the conference call will be available following the call, and can be accessed on www.aradigm.com or by dialing toll-free 1-800-642-1687. International callers should dial +1-706-645-9291. The replay passcode is 7767982#. Aradigm develops non-invasive delivery systems to enable patients to comfortably self-administer biopharmaceuticals and small molecules. The company's advanced AERx(R) pulmonary and Intraject(R) needle-free delivery technologies offer rapid delivery solutions for liquid drug formulations. Current development programs focus on neurological disorders, heart disease, respiratory conditions, diabetes and cancer. More information about Aradigm can be found at www.aradigm.com. Except for the historical information contained herein, this news release contains forward-looking statements that involve risk and uncertainties, including clinical results, the timely availability and acceptance of new products, the impact of competitive products and pricing, and the management of growth, as well as the other risks detailed from time to time in Aradigm Corporation's Securities and Exchange Commission (SEC) Filings, including the company's Annual Report on Form 10-K, and quarterly reports on Form 10-Q. NOTE: AERx and Intraject are registered trademarks of Aradigm. Contact: Chris Keenan or Joe Dorame Aradigm RCG Capital Markets Group, Inc. 510-265-9370 480-675-0400 ARADIGM CORPORATION CONDENSED STATEMENTS OF OPERATIONS (In thousands, except per share information) (Unaudited) THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ------------------------ ------------------------ 2005 2004 2005 2004 ---------- ---------- ---------- ---------- Contract revenues - From related parties $ -- $ 7,006 $ 7,444 $ 13,616 Contract revenues - Other 1,212 72 1,482 105 Total Contract revenues 1,212 7,078 8,926 13,721 Operating expenses: Research and development 7,317 11,412 14,387 23,299 General and administrative 2,713 3,167 5,948 5,703 Total operating expenses 10,030 14,579 20,335 29,002 Loss from operations (8,818) (7,501) (11,409) (15,281) Interest income 350 49 638 115 Interest expense (8) (5) (45) (15) Net loss $ (8,476) $ (7,457) $ (10,816) $ (15,181) Basic and diluted net loss per share $ (0.12) $ (0.12) $ (0.15) $ (0.24) Shares used in computing basic and diluted net loss per share 72,561 63,531 72,429 63,238 ARADIGM CORPORATION CONDENSED BALANCE SHEETS (In thousands) June 30, December 31, 2005 2004 ---------- ----------- (Unaudited) * ASSETS Current assets: Cash, cash equivalents and short-term investments $ 44,819 $ 16,763 Receivables 749 99 Current portion of notes receivable from officers and employees 61 67 Other current assets 1,158 1,602 Total current assets 46,787 18,531 Property and equipment, net 7,966 60,555 Noncurrent portion of notes receivable from officers and employees 192 216 Other assets 557 439 Total assets $ 55,502 $ 79,741 LIABILITIES, REDEEMABLE CONVERTIBLE PREFERRED STOCK AND SHAREHOLDERS' EQUITY Current liabilities: Accounts payable $ 2,221 $ 2,469 Accrued clinical and cost of other studies 153 293 Accrued compensation 3,131 2,984 Deferred revenue -- 7,525 Other accrued liabilities 389 1,138 Total current liabilities 5,894 14,409 Noncurrent portion of deferred revenue -- 3,966 Noncurrent portion of deferred rent 606 1,943 Redeemable convertible preferred stock 23,669 23,669 Shareholders' equity 25,333 35,754 Total liabilities, redeemable convertible preferred stock and shareholders' equity $ 55,502 $ 79,741 * The balance sheet at December 31, 2004 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements. SOURCE Aradigm Corporation -0- 07/26/2005 /CONTACT: Chris Keenan of Aradigm, +1-510-265-9370; or Joe Dorame of RCG Capital Markets Group, Inc., +1-480-675-0400/ /Web site: http://www.aradigm.com / _