# EDGAR Filing Document

**Accession Number:** 0000768408
**File Stem:** 0001437749-25-028932
**Filing Date:** 2025-9
**Character Count:** 7508
**Document Hash:** 41b5f0f56aa0b2d90723d732c851f346
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001437749-25-028932.hdr.sgml**: 20250912

**ACCESSION NUMBER**: 0001437749-25-028932

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250821

**FILED AS OF DATE**: 20250912

**DATE AS OF CHANGE**: 20250912

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Miyashiro Jennifer A.S.
- **CENTRAL INDEX KEY:** 0002084332

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-14602
- **FILM NUMBER:** 251311266

**MAIL ADDRESS:**
- **STREET 1:** 73-4460 QUEEN KAAHUMANU HWY STE 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]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 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

## Ex-24

**Exhibit 24**

**LIMITED POWER OF ATTORNEY**

**FOR SECTION 16 REPORTING OBLIGATIONS**

KNOW ALL MEN BY THESE PRESENTS:

That I, Jennifer Miyashiro, hereby appoint each of Amy Nordin, Linda Tanoai and Jesse B. Debban as my attorneys in fact to: (1) prepare, execute in the undersigned's name and on the undersigned's behalf, and submit to the U.S. Securities and Exchange Commission (the "SEC") a Form ID, including amendments thereto, and any other documents necessary or appropriate to obtain codes and passwords enabling the undersigned to make electronic filings with the SEC of reports required by Section 16(a) of the Securities Exchange Act of 1934 and the rules and regulations thereunder as amended from time to time (the "Exchange Act"), (2) execute for and on my behalf, in my capacity as an officer or director or both of Cyanotech Corporation (the "Company") and as a beneficial owner of securities of the Company while also serving as an officer or director or both, all Forms 3, Forms 4 and Forms 5 (and any amendments thereto), in accordance with Section 16(a) of the Exchange Act: (3) do and perform any and all acts for and on my behalf which may be necessary or desirable to complete and execute any such Forms 3, Forms 4 and Forms 5, complete and execute any amendments thereto, and timely file such forms with the SEC and any securities exchange or similar authority; and (4) take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney in fact, may be of benefit to, in the best interest of, or legally required by me, it being understood that the documents executed by such attorney in fact on my behalf pursuant to this Limited Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney in fact may approve in such attorney in fact's discretion.

I hereby acknowledge that the foregoing attorneys in fact, in serving in such capacity at the request and on the behalf of me, are not assuming, nor is the Company assuming, any of my responsibilities to comply with, or any liability for the failure to comply with, any provision of Section 16 of the Exchange Act.

This Limited Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5 with respect to the undersigned's holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to each of the foregoing attorneys in fact.

IN WITNESS WHEREOF, the undersigned has caused this instrument to be duly executed this 21 day of August, 2025.

---

| | |
|:---|:---|
| By:  | /s/ Jennifer Miyashiro |
| Jennifer Miyashiro | Jennifer Miyashiro |
| Date: 8/21/25 | Date: 8/21/25 |

---

STATE OF California<u> </u>)) SS.

COUNTY OF <u>San Bernardino</u>)

On August 21, 2025, before me personally appeared Jennifer Miyashiro, to me known to be the person described in and who executed the foregoing Power of Attorney, and acknowledged that he executed it as his free act and deed.

---

| | |
|:---|:---|
| /s/Ashley Deprospo | /s/Ashley Deprospo |
| Print name:  | Ashley Deprospo |
| Notary Public, State of  | California |
| My Commission expires: | July 6, 2029 |

---

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Miyashiro Jennifer A.S.<br><sub>(Last) (First) (Middle)</sub><br>CYANOTECH CORPORATION<br>73-4460 QUEEN KAAHUMANU HWY #102<br><sub>(Street)</sub><br>KAILUA-KONA, HI 96740<br><sub>(City) (State) (Zip)</sub> | **3. Issuer Name and Ticker or Trading Symbol**<br>CYANOTECH CORP [ CYAN ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-08-21 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [ ] 10% Owner<br>[X] Officer (give title below)   [ ] Other (specify below)<br>_CFO, VP Fin & Admin, Treasurer_ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |

---

**Signature:** /s/ Linda Tanoai  
**Date:** 2025-09-12

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**