<SEC-DOCUMENT>0001437749-20-007344-index.html : 20200408
<SEC-HEADER>0001437749-20-007344.hdr.sgml : 20200408
<ACCEPTANCE-DATETIME>20200408181800
ACCESSION NUMBER:		0001437749-20-007344
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20200331
FILED AS OF DATE:		20200408
DATE AS OF CHANGE:		20200408

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Cysewski Gerald R
		CENTRAL INDEX KEY:			0001369133

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-14602
		FILM NUMBER:		20782803

	MAIL ADDRESS:	
		STREET 1:		73-4460 QUEEN KAAHUMANU HWY#102
		CITY:			KAILUA-KONA
		STATE:			HI
		ZIP:			96740

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CYANOTECH CORP
		CENTRAL INDEX KEY:			0000768408
		STANDARD INDUSTRIAL CLASSIFICATION:	MEDICINAL CHEMICALS & BOTANICAL PRODUCTS [2833]
		IRS NUMBER:				911206026
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		73-4460 QUEEN KAAHUMANU HWY
		STREET 2:		SUITE 102
		CITY:			KAILUA KONA
		STATE:			HI
		ZIP:			96740
		BUSINESS PHONE:		8083261353

	MAIL ADDRESS:	
		STREET 1:		73-4460 QUEEN KAAHUMANU HWY
		STREET 2:		SUITE 102
		CITY:			KAILUA-KONA
		STATE:			HI
		ZIP:			96740
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rdgdoc.xml
<DESCRIPTION>FORM 4
<TEXT>
Document 1 - file: rdgdoc.html

Document 1 - RAW XML: rdgdoc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>cysewskipoa09-19.htm
<DESCRIPTION>GC POWER OF ATTORNEY
<TEXT>
Document 2 - file: cysewskipoa09-19.htm

</DOCUMENT>
</SEC-DOCUMENT>