Cyanotech Corporation (Nasdaq Capital Market: CYAN), a world leader in microalgae-based, high-value nutrition and health products will host a Skype broadcast at 5:00 p.m. EDT on Friday, August 11, 2017 to respond to questions about its operating results and other topics of interest. Interested parties are asked to submit questions to questions@cyanotech.com before 5:00 p.m. EDT on Thursday, August 10, 2017. The Company will respond to relevant questions only, and will not be accepting any questions or comments during the broadcast.

To join the broadcast, please browse http://cyanotech.com/meet approximately five minutes prior to the start time.

Financial results for the quarter ended June 30, 2017 will be available prior to the conference call. A transcript of the broadcast will be available on the Company’s website (www.cyanotech.com) for approximately one week after completion of the broadcast.

About Cyanotech — Cyanotech Corporation, a world leader in microalgae technology for over 30 years, produces BioAstin® Hawaiian Astaxanthin® and Hawaiian Spirulina Pacifica®. These all natural, dietary ingredients and supplements leverage our experience and reputation for quality, building nutritional brands which promote health and well-being. The Company’s mission is to fulfill the promise of whole health through Hawaiian microalgae. Cyanotech’s BioAstin® offers superior antioxidant activity which supports skin, eye and joint health, as well as recovery from exercise*. Cyanotech's Spirulina products offer nutrition that supports cardiovascular health and immunity.* All Cyanotech products are produced from microalgae grown at our 90-acre facility in Kona, Hawaii using patented and proprietary technology and are Generally Recognized as Safe (GRAS) for use in food products. Cyanotech sells its products direct to consumers at retail locations in the United States and online at www.nutrex-hawaii.com and also distributes to dietary supplement, nutraceutical and cosmeceutical manufacturers and marketers. The Company is regulated by the FDA. Visit www.cyanotech.com for more information.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

“Safe Harbor” Statement under the U.S. Private Securities Litigation Reform Act of 1995 Besides statements of present fact and historical fact, this press release may contain forward-looking statements. Forward-looking statements relate to the future and are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict. Our actual results may differ materially from those contemplated by forward-looking statements. We caution against relying on forward-looking statements. Important factors that could change actual, future results include: changes in sales levels to our largest customers, weather patterns in Hawaii, production problems, risks associated with new products, foreign exchange fluctuations, and availability of financing, as well as national and global political, economic, business, competitive, market and regulatory conditions. Other factors are more fully detailed in the Company’s annual Form 10-K filings with the Securities and Exchange Commission.