Michael A. Davis - 28 Aug 2025 Form 4 Insider Report for CYANOTECH CORP (CYAN)

Reporting relationship
Director, 10%+ Owner
Issuer ticker
CYAN
Reported as of
28 Aug 2025
Net transaction value
$0
Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
4
Accepted by SEC
02 Sep 2025, 18:11:33 UTC
Prior SEC filing
03 Oct 2024
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/Amy B. Nordin, by Power of Attorney

Key filing fact

Michael A. Davis filed Form 4 for CYANOTECH CORP (CYAN) on 02 Sep 2025.

Key facts

  • This page summarizes Michael A. Davis's Form 4 filing for CYANOTECH CORP (CYAN).
  • 1 reported transaction and 0 derivative rows are listed below.
  • Accepted by SEC: 02 Sep 2025, 18:11.

Change

  • Previous filing in this sequence was filed on 03 Oct 2024.
  • Current net transaction value: $0.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001201156 Primary reporting owner

DAVIS MICHAEL A /

Relationship
Director, 10%+ Owner
Address
CYANOTECH CORPORATION, 73-4460 QUEEN KAAHUMANU HWY #102, KAILUA-KONA
Signature
/s/Amy B. Nordin, by Power of Attorney
Signature date
02 Sep 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CYAN transaction

Cyanotech Corporation Common Stock

Award

Transaction value
$0
Shares
+50,000
Change %
+3.4%
Price
$0.000000
Shares after
1,528,598
Date
28 Aug 2025
Ownership
By self as trustee of the Michael Arlen Davis Revocable Trust
CYAN holding

Cyanotech Corporation Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
12,119
Date
28 Aug 2025
Ownership
Direct
CYAN holding

Cyanotech Corporation Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
31,250
Date
28 Aug 2025
Ownership
By Spouse
CYAN holding

Cyanotech Corporation Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
150,000
Date
28 Aug 2025
Ownership
By self as co-trustee for the Nyracai Davis Irr. Trust and the Nettizanne J. Davis Irr. Trust
CYAN holding

Cyanotech Corporation Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
58,000
Date
28 Aug 2025
Ownership
By self as trustee for Nettizanne Johnstone Davis GST Exempt Trust
CYAN holding

Cyanotech Corporation Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
58,789
Date
28 Aug 2025
Ownership
By self as trustee for Nyracai Johnstone Davis GST Exempt Trust
* marks a reported price that did not pass the local price check.
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