Custer Matthew Keith
SEC insider (Form 3/4/5 filer). CIK 0001789455. President and CEO at CYANOTECH CORP (CYAN). 4 reported Form 4/5 transactions since Sep 2024; latest on Jul 29, 2025. Located in KAILUA-KONA, HI.
Companies Custer Matthew Keith has filed insider reports for
- CYANOTECH CORP (CYAN): Director, Officer, President and CEO
Custer Matthew Keith
CIK: 0001789455
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)2 (50.0%)
Derivative conversions
Awards (A)2 (50.0%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
CYAN
CYANOTECH CORP
DirectorOfficer
Discretionary Trading P&L
Holdings
Transaction History (4 total)
- Jul 29, 2025CYAN
CYANOTECH CORP
ExerciseDirect2.1K shares- - Jun 16, 2025CYAN
CYANOTECH CORP
AwardDirectCyanotech common stock options
150K shares- - Jun 16, 2025CYAN
CYANOTECH CORP
AwardDirectRestricted Stock Units
64.1K shares- - Apr 7, 2025CYAN
CYANOTECH CORP
ExerciseDirect33 shares-
1-4 of 4 transactions