BIOLARGO, INC. (BLGO) is a publicly traded company in the Unknown sector. Across all available filings, 9 corporate insiders have executed 137 transactions totaling $110.2K, demonstrating a bullish sentiment with $110.2K in net insider flow. The most recent transaction on Feb 1, 2026 involved a transaction of 300,000 shares valued at $0.
No significant insider buying has been recorded for BLGO in the recent period.
No significant insider selling has been recorded for BLGO in the recent period.
Based on recent SEC filings, insider sentiment for BLGO is bullish with an Insider Alignment Score of 100/100 and a net flow of $110.2K. Insiders are accumulating shares, which historically signals confidence in the company's future performance.
Insider trading at BIOLARGO, INC. (BLGO) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 9 insiders are actively trading BLGO stock, having executed 137 transactions in the past 90 days. The most active insider is Dennis P. Calvert (Executive), who has made 48 transactions totaling $3.0M.
Get notified when executives and directors at BLGO file new Form 4 transactions
Date | Insider | Title | Type | Shares | Price | Value | Flags |
|---|---|---|---|---|---|---|---|
| Feb 1, 2026 | K. Dargan Charles | Chief Financial Officer | Award | 300,000 | $N/A | $0 | C-Suite |
| Dec 31, 2025 | P. Calvert Dennis | Executive | Award | 130,222 | $0.18 | $24.0K | |
| Nov 14, 2025 | P. Calvert Dennis | Executive | Award | 310,269 | $0.16 | $49.6K | |
| Nov 14, 2025 | Reay Code Kenneth | Executive | Award | 313,754 | $0.16 | $50.2K | |
| Jul 14, 2025 | Reay Code Kenneth | Executive | Award | 181,253 | $0.20 | $36.3K | |
| Jul 14, 2025 | P. Calvert Dennis | Executive | Award | 169,498 | $0.20 | $33.9K | |
| Dec 31, 2023 | P. Calvert Dennis | Executive | Award | 50,557 | $0.17 | $8.6K | |
| Dec 31, 2023 | Reay Code Kenneth | Executive | Award | 72,621 | $0.17 | $12.3K | |
| Sep 30, 2023 | Reay Code Kenneth | Executive | Award | 19,010 | $0.17 | $3.2K | |
| Jul 24, 2023 | P. Calvert Dennis | Executive | Award | 50,553 | $0.18 | $9.1K | |
| Jun 30, 2023 | Reay Code Kenneth | Executive | Award | 68,541 | $0.18 | $12.3K | |
| Mar 31, 2023 | Reay Code Kenneth | Executive | Award | 30,747 | $0.20 | $6.1K | |
| Oct 3, 2022 | Reay Code Kenneth | Executive | Award | 167,781 | $0.27 | $45.3K | |
| Oct 3, 2022 | P. Calvert Dennis | Executive | Award | 100,549 | $0.27 | $27.1K | |
| Jul 7, 2022 | P. Calvert Dennis | Executive | Award | 156,111 | $0.18 | $28.1K |
| TYPE | COUNT | VALUE | % |
|---|---|---|---|
Award(A) | 88 | $3.6M | 63.8% |
Conversion(C) | 6 | $1.4M | 24.5% |
Exercise(M) | 1 | $450.3K | 7.9% |
Purchase(P) | 3 | $110.2K | 1.9% |
Other(J) | 7 | $77.4K | 1.4% |
Gift(G) | 32 | $28.1K | 0.5% |
Insiders at BIOLARGO, INC. are accumulating shares at an accelerated pace. With 9 insiders making 137 transactions totaling $110.2K in purchases versus $0 in sales, the net buying activity of $110.2K signals strong executive confidence. Dennis P. Calvert (Executive) leads the buying activity with $3.0M in transactions across all time.