Item 5.03 Amendments to Bylaws

Effective April 20, 2009, the Board of Directors amended the Company's bylaws. A copy of the Amended and Restated Bylaws is attached hereto as Exhibit 3.2 and incorporated herein by reference. The amendments relate primarily to the requirements for advance notice and additional information that a stockholder must provide when making a proposal at a special meeting of stockholders or a director nomination or proposal at an annual meeting of stockholders. Other amendments conform certain bylaw provisions to the articles of incorporation and add or clarify certain administrative procedures regarding stockholder and board of director meetings.

Item 9.01 Financial Statements and Exhibits

(d) The following items are filed as exhibits to this report:

3.2 Amended and Restated Bylaws of Cyanotech Corporation

99.1 News Release dated April 21, 2009 and headed: "Board of Directors Amends Cyanotech' Bylaws"

---