Cyanotech Corporation, today announced that Jeffrey H. Sakamoto has resigned as Chief Financial Officer of the Company effective November 25, 2005 to pursue another career opportunity. Mr. Sakamoto joined Cyanotech in 1995, became Controller in 1997 and has served as Chief Financial Officer, Vice President-Finance & Administration, Secretary and Treasurer since March 2003.

"I deeply appreciate Jeff's service to Cyanotech during the past 10 years," said Gerald R. Cysewski, Ph.D., Chairman, President and Chief Executive Officer. "He has contributed to the Company at multiple levels during his tenure, particularly in presenting the financial results of the Company in written reports and during our quarterly investor presentations. Our operations have benefited from his participation and we wish him the best in his future endeavors."

Cyanotech has begun the search for a new financial officer and anticipates a smooth transition.