Gerald R. Cysewski - 29 Jul 2025 Form 4 Insider Report for CYANOTECH CORP (CYAN)

Role
Chief Scientific Officer
Signature
/s/ Amy B. Nordin by POA
Issuer symbol
CYAN
Transactions as of
29 Jul 2025
Net transactions value
-$240
Form type
4
Filing time
31 Jul 2025, 13:25:20 UTC
Previous filing
09 Apr 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Cysewski Gerald R Chief Scientific Officer 73-4460 QUEEN KAAHUMANU HWY #102, KAILUA-KONA /s/ Amy B. Nordin by POA 31 Jul 2025 0001369133

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CYAN Common Stock Options Exercise $0 +1,577 +1.1% $0.000000 147,289 29 Jul 2025 Direct F1
transaction CYAN Common Stock Tax liability $240 -592 -0.4% $0.4050 146,697 29 Jul 2025 Direct F2
holding CYAN Common Stock 250 29 Jul 2025 Held by spouse

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 Restricted Stock Units Options Exercise $0 -1,577 -98% $0.000000 34 29 Jul 2025 Common Stock 1,577 Direct F3, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents the conversion upon vesting of restricted stock units into common stock.
F2 No stock was sold. On July 29, 2025, in connection with the vesting of 1,577 shares of stock, the Company withheld a total of 592 shares to satisfy a payroll tax liability incident to such vesting.
F3 Each restricted stock unit represents the contingent right to receive one (1) share of Cyanotech Common Stock.
F4 The restricted stock units vest as to 34 shares on April 6, 2026, and is subject to the reporting person's continued service with the Company on the vesting date.