Matthew Keith Custer - 16 Jun 2025 Form 4 Insider Report for CYANOTECH CORP (CYAN)

Signature
/s/Laura L. Taylor, by Power of Attorney
Issuer symbol
CYAN
Transactions as of
16 Jun 2025
Transactions value $
$0
Form type
4
Filing time
18 Jun 2025, 15:33:08 UTC
Previous filing
09 Apr 2025
Next filing
31 Jul 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Custer Matthew Keith President and CEO, Director 73-4460 QUEEN KAAHUMANU HWY #102, KAILUA-KONA /s/Laura L. Taylor, by Power of Attorney 18 Jun 2025 0001789455

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction CYAN Cyanotech common stock options Award $0 +150K $0.00 150K 16 Jun 2025 Cyanotech common stock 150K $0.39 Direct F1
transaction CYAN Restricted Stock Units Award $0 +64.1K $0.00 4.68K 16 Jun 2025 Common Stock 64.1K Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The stock options shall vest as to 50,000 shares on June 16, 2026, 50,000 on June 16, 2027 and 50,000 on June 16, 2028, in each case subject to continued service with Cyanotech on the vesting date.
F2 Each restricted stock unit represents the contingent right to receive one (1) share of Cyanotech Common Stock.
F3 The restricted stock units vest as to 21,368 shares on June 16, 2026; 21,368 on June 16, 2027 and 21,367 shares on June 16, 2028, in each case subject to the reporting person's continued service with the Company on the vesting date.