Insider · CIK 0001789455
Matthew Keith Custer
Files at CYAN (CYANOTECH CORP). First filing -, latest -.
In brief
Matthew Keith Custer files SEC Form 4 as CEO, president and director at CYAN (CYANOTECH CORP). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.
A track record needs three past buys with six months of prices behind them; Matthew Keith Custer has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Transactions
Every row this insider has filed, 6 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jul 29, 2025 | CYAN CYANOTECH CORP | MOption exercise Common Stock | +2,075 | $0.00 | $0 | 6,754 | Jul 31, 2025 |
| Jul 29, 2025 | CYAN CYANOTECH CORP | MOption exercise Restricted Stock Unitsderivative | -2,075 | $0.00 | $0 | 64,137 | Jul 31, 2025 |
| Jun 16, 2025 | CYAN CYANOTECH CORP | AGrant or award Cyanotech common stock optionsderivative | +150,000 | $0.00 | $0 | 150,000 | Jun 18, 2025 |
| Jun 16, 2025 | CYAN CYANOTECH CORP | AGrant or award Restricted Stock Unitsderivative | +64,103 | $0.00 | $0 | 4,679 | Jun 18, 2025 |
| Apr 7, 2025 | CYAN CYANOTECH CORP | MOption exercise Common Stock | +33 | $0.00 | $0 | 4,679 | Apr 9, 2025 |
| Apr 7, 2025 | CYAN CYANOTECH CORP | MOption exercise Restricted Stock Unitsderivative | -33 | $0.00 | $0 | 2,109 | Apr 9, 2025 |
Questions about Matthew Keith Custer
Answered from the filings on this page, as of the latest one.
Is Matthew Keith Custer buying or selling?
Matthew Keith Custer has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did Matthew Keith Custer's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Matthew Keith Custer has 0.
Where does Matthew Keith Custer file Form 4?
Matthew Keith Custer has filed Form 4 at CYAN (CYANOTECH CORP) as President and CEO. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.