Custer Matthew Keith - Insider Non-Derivative Transactions at CYANOTECH CORP (CYAN) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Jul 29, 2025, Custer Matthew Keith's relationship to CYANOTECH CORP (CYAN) is Director,Officer (President and CEO), and currently has 6,754 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other CYAN insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

Custer Matthew Keith - Insider Non-Derivative Transactions of CYAN Common Stock

Custer Matthew Keith - Insider Non-Derivative Transactions at CYAN

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Jul 30, 2025	M -- (Common Stock)	2075	0	6754
Apr 8, 2025	M -- (Common Stock)	33	0	4679
Jul 30, 2024	F -- (Common Stock)	779	0.56	4646
Jul 30, 2024	M -- (Common Stock)	2074	0	5425
Apr 9, 2024	F -- (Common Stock)	13	0.4	3351
Apr 9, 2024	M -- (Common Stock)	33	0	3364
Aug 1, 2023	F -- (Common Stock)	978	0.84	3331
Aug 1, 2023	M -- (Common Stock)	2603	0	4309
Apr 7, 2023	F -- (Common Stock)	13	0.94	1706
Apr 7, 2023	M -- (Common Stock)	34	0	1719