CALVERT DENNIS P - Insider Non-Derivative Transactions at BIOLARGO, INC. (BLGO) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Nov 14, 2025, CALVERT DENNIS P's relationship to BIOLARGO, INC. (BLGO) is Director,Officer (President), and currently has 10,393,403 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 BLGO insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

CALVERT DENNIS P - Insider Non-Derivative Transactions of BLGO Common stock

CALVERT DENNIS P - Insider Non-Derivative Transactions at BLGO

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Nov 15, 2025	Acquisition -- (Common Stock)	310269	0.16	10393403
Jul 15, 2025	Acquisition -- (Common Stock)	169498	0.2	10029542
Jan 1, 2024	Acquisition -- (Common stock)	50557	0.17	9860044
Jul 25, 2023	Acquisition -- (Common stock)	50553	0.18	9809487