Matthew Keith Custer
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
Exercise(M)Direct2.1K shares- - Jun 16, 2025CYAN
CYANOTECH CORP
Award(A)DirectCyanotech common stock options
150K shares- - Jun 16, 2025CYAN
CYANOTECH CORP
Award(A)DirectRestricted Stock Units
64.1K shares- - Apr 7, 2025CYAN
CYANOTECH CORP
Exercise(M)Direct33 shares-
1-4 of 4 transactions
About Custer Matthew Keith
Custer Matthew Keith (SEC CIK 0001789455) files insider reports with the SEC as President and CEO of CYANOTECH CORP (CYAN).
Signal8 holds 3 ownership filings by Custer Matthew Keith, all Form 4s, filed between Apr 9, 2025 and Jul 31, 2025. Those filings report 4 transactions, from Apr 7, 2025 to Jul 29, 2025. Signal8's Form 4 history starts in Sep 2024.
The business address on Custer Matthew Keith's filings is in KAILUA-KONA, HI.
Recent filings by Custer Matthew Keith
Other insiders filing for CYANOTECH CORP (CYAN)
- Miyashiro Jennifer A.S., CFO, VP Fin & Admin, Treasurer
- MULDER DAVID M, Director
- Vied David L, Director
- DAVIS MICHAEL A /, Director
- Nordin Amy Beth, VP, HR, Secretary
- Johansen Jennifer M., VP, Quality, Regulatory & Govt