Aradigm Corporation announced that effective February 11, 2018, each of Igor Gonda, President and Chief Executive Officer; Juergen Froehlich, Chief Medical Officer; and Nancy Pecota, Vice President, Finance, Chief Financial Officer and Corporate Secretary resigned all offices and positions held by him or her with the company. Effective February 11, 2018, the Board appointed Dr. John Siebert, Chairman of the Board of the company, as Executive Chairman and Interim Principal Executive Officer of the company. Dr. Siebert, age 77, has served as a director of the company since November 2006 and as Acting Chairman since June 2017.

Dr. Siebert is Founder and Chief Executive Officer of Compan Pharmaceuticals Inc. From May 2014 to November 2015, Dr. Siebert was Chief Executive Officer of Chase Pharmaceuticals.