InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Insider track record
CEODisclosed buys
0
Disclosed sells
0
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
No signal scores available.
Browse the complete record of transactions filed by Custer Matthew Keith, Chairman & CEO. Officer active across 1 company, notably Cyanotech CORP. Cumulatively, 10 filings have been recorded. Activity tracked since 13 July 2021. The latest transaction was filed on 29 July 2025 (Levée d'options). Regulator: SEC (Form 4). The full history is free.
Companies and markets linked to Custer Matthew Keith
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations10 total
2,075 shares0Common StockSEC:0001437749-25-024127:0
33 shares0Common StockSEC:0001437749-25-011515:0
2,074 shares0Common StockSEC:0001437749-24-024095:0
33 shares0Common StockSEC:0001437749-24-011676:0
2,603 shares0Common StockSEC:0001437749-23-021372:0
34 shares0Common StockSEC:0001437749-23-009813:0
529 shares0Common StockSEC:0001437749-22-018395:0
33 shares0Common StockSEC:0001437749-22-008583:0
530 shares0Common StockSEC:0001437749-21-018406:0
254 shares0Common StockSEC:0001437749-21-017025:0
10 of 10 declarations
About Custer Matthew Keith
Custer Matthew Keith is Président-Directeur Général at Cyanotech CORP (XNAS). He has 10 filings in total, and the recent filings observed between 2021-07-15 and 2025-07-31 show a dominant transaction nature of option exercise, with buy and sell amounts of 0.
