Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended March 31, 2021 Commission File Number 0-14602 CYANOTECH CORPORATION (Exact name of registrant as specified in its charter) Nevada 91-1206026 (State or other jurisdiction of incorporation or organization) (I. R. S. Employer Identification No.) 73-4460 Queen Kaahumanu Highway, Suite 102, Kailua-Kona, ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For Quarterly Period Ended December 31, 2020 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period From to Commission File Number 0-14602 CYANOTECH CORPORATION (Exact name of registrant as specified in its charter) NEVADA 91-1206026 (State or other jurisdi ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For Quarterly Period Ended September 30, 2020 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period From to Commission File Number 0-14602 CYANOTECH CORPORATION (Exact name of registrant as specified in its charter) NEVADA 91-1206026 (State or other jurisd ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For Quarterly Period Ended June 30, 2020 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period From to Commission File Number 0-14602 CYANOTECH CORPORATION (Exact name of registrant as specified in its charter) NEVADA 91-1206026 (State or other jurisdictio ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended March 31, 2020 Commission File Number 0-14602 CYANOTECH CORPORATION (Exact name of registrant as specified in its charter) Nevada 91-1206026 (State or other jurisdiction of incorporation or organization) (I. R. S. Employer Identification No.) 73-4460 Queen Kaahumanu Highway, Suite 102, Kailua-Kona, ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For Quarterly Period Ended December 31, 2019 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period From to Commission File Number 0-14602 CYANOTECH CORPORATION (Exact name of registrant as specified in its charter) NEVADA 91-1206026 (State or other jurisdi ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For Quarterly Period Ended September 30, 2019 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period From to Commission File Number 0-14602 CYANOTECH CORPORATION (Exact name of registrant as specified in its charter) NEVADA 91-1206026 (State or other jurisd ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For Quarterly Period Ended June 30, 2019 Or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the Transition Period From to Commission File Number 0-14602 CYANOTECH CORPORATION (Exact name of registrant as specified in its charter) NEVADA 91-1206026 (State or other jurisdictio ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D. C. 20549 FORM 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended March 31, 2019 Commission File Number 0-14602 CYANOTECH CORPORATION (Exact name of registrant as specified in its charter) Nevada 91-1206026 (State or other jurisdiction of incorporation or organization) (I. R. S. Employer Identification No.) 73-4460 Queen Kaahumanu Highway, Suite 102, Kailua-Kona, ...

Cyanotech Corporation (NASDAQ:CYAN) Q3 2019 Earnings Conference Call February 15, 2019 8:00 PM ET Company Participants Mawae Morton - CEO Brian Orlopp - CFO Conference Call Participants Mawae Morton Thank you all for joining us today on the earnings call for Cyanotech Corporation. We are pleased to report Cyanotech's Third Quarter Fiscal Year 2019 Earnings Results. On the call today you've myself, Mawae Morton, Chief Executive Officer for Cyanotech Corporation and Mr. Brian Orlopp. I would like to start the ...