X0306 4 2019-11-08 1 0000768408 CYANOTECH CORP CYAN 0001715607 Morton Mawae 73-4460 QUEEN KAAHUMANU HWY #102 KAILUA-KONA HI 96740 1 Former CEO and Director Common Stock 2019-11-08 4 A 0 5700 0 A 26605 D Common Stock 2019-11-08 4 D 0 1444 0 D 25161 D Stock Options 3.3500 Common Stock 75000 75000 D Stock Options 3.8300 Common Stock 45000 45000 D Grant of shares made pursuant to the Separation Agreement between the issuer and the reporting person, dated as of June 3, 2019 (the "Separation Agreement"), a copy of which is attached to and made a part of the issuer's Current Report on Form 8-K, filed with the Securities and Exchange Commission on June 7, 2019; transaction exempt from Section 16(b) of the Securitities Exchange Act of 1934, as amended (the "Exchange Act"), pursuant to Rule 16b-3 thereunder. Shares withheld pursuant to the Separation Agreement to satisfy tax withholding obligations; transaction exempt from Section 16(b) of the Exchange Act pursuant to Rule 16b-3 thereunder. Pursuant to Separation Agreement, all stock options are fully vested as of May 22, 2019. Pursuant to Separation Agreement, all stock options will expire on December 6, 2019. /s/Laura L. Taylor, by Power of Attorney 2019-11-12