Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-07-07 Option Award | 2026-07-07 6:01 pm | N/A N/A | BIOLARGO INC. | BLGO | CODE KENNETH REAY Chief Science Officer | 532,567 | $0.1135 | 26,408,319 (Direct) | View |
| 2026-07-01 Option Award | 2026-07-02 8:40 pm | N/A N/A | BIOLARGO INC. | BLGO | CALVERT DENNIS P President | 219,914 | $0.113 | 11,058,108 (Direct) | View |
| 2026-06-30 Option Award | 2026-07-02 8:40 pm | N/A N/A | BIOLARGO INC. | BLGO | CALVERT DENNIS P President | 699,569 | $0.1135 | 11,058,108 (Direct) | View |
| 2026-06-30 Option Award | 2026-07-02 7:41 pm | 2026-06-30 2036-06-30 | BIOLARGO INC. | BLGO | STROMMEN JACK B. Director | 132,159 | $0 | 2,584,262 (Direct) | View |
| 2026-06-30 Option Award | 2026-07-02 6:42 pm | 2026-06-30 2036-06-30 | BIOLARGO INC. | BLGO | Park Linda Director | 165,198 | $0 | 1,546,700 (Direct) | View |
| 2026-06-30 Option Award | 2026-07-02 6:30 pm | 2026-06-30 2036-06-30 | BIOLARGO INC. | BLGO | Bray Christina Elaine Director | 165,198 | $0 | 1,546,700 (Direct) | View |
| 2026-06-30 Option Award | 2026-07-02 6:21 pm | 2026-06-30 2036-06-30 | BIOLARGO INC. | BLGO | Marshall Dennis E Director | 313,979 | $0 | 11,444,150 (Direct) | View |
| 2026-06-22 Option Award | 2026-06-24 6:21 pm | 2026-06-22 2036-06-22 | BIOLARGO INC. | BLGO | Marshall Dennis E Director | 40,909 | $0 | 5,463,738 (Direct) | View |
| 2026-03-31 Option Award | 2026-04-02 5:21 pm | N/A N/A | BIOLARGO INC. | BLGO | CODE KENNETH REAY Chief Science Officer | 69,444 | $0.162 | 25,875,752 (Direct) | View |
| 2026-03-31 Option Award | 2026-04-01 7:47 pm | 2026-03-31 2036-03-31 | BIOLARGO INC. | BLGO | STROMMEN JACK B. Director | 92,593 | $0 | 2,452,103 (Direct) | View |
| 2026-03-31 Option Award | 2026-04-01 7:38 pm | 2026-03-31 2036-03-31 | BIOLARGO INC. | BLGO | Bray Christina Elaine Director | 115,741 | $0 | 1,381,502 (Direct) | View |
| 2026-03-31 Option Award | 2026-04-01 7:34 pm | 2026-03-31 2036-03-31 | BIOLARGO INC. | BLGO | Park Linda Director | 115,741 | $0 | 1,381,502 (Direct) | View |
| 2026-03-31 Option Award | 2026-04-01 7:24 pm | 2026-03-31 2036-03-31 | BIOLARGO INC. | BLGO | Marshall Dennis E Director | 254,630 | $0 | 10,749,917 (Direct) | View |
| 2026-02-01 Option Award | 2026-02-03 2:56 pm | 2026-03-01 2036-02-01 | BIOLARGO INC. | BLGO | DARGAN CHARLES K Chief Financial Officer | 300,000 | $0 | 5,931,668 (Direct) | View |
| 2025-09-30 Ownership | 2026-02-03 2:53 pm | 2015-10-31 2025-09-30 | BIOLARGO INC. | BLGO | DARGAN CHARLES K Chief Financial Officer | 300,000 | $0.57 | 20,814,908 (Direct) | View |
Ownership | 2026-02-03 2:53 pm | N/A N/A | BIOLARGO INC. | BLGO | DARGAN CHARLES K Chief Financial Officer | 0 | $0 | 20,814,908 (Direct) | View |
| 2025-02-01 Ownership | 2026-02-03 2:53 pm | 2025-03-01 2035-02-01 | BIOLARGO INC. | BLGO | DARGAN CHARLES K Chief Financial Officer | 1,305,882 | $0 | 20,814,908 (Direct) | View |
| 2025-12-31 Option Award | 2026-01-05 7:06 pm | N/A N/A | BIOLARGO INC. | BLGO | CODE KENNETH REAY Chief Science Officer | 54,803 | $0.1843 | 25,806,308 (Direct) | View |
| 2025-12-31 Option Award | 2026-01-05 6:30 pm | N/A N/A | BIOLARGO INC. | BLGO | CALVERT DENNIS P President | 130,222 | $0.1843 | 10,523,625 (Direct) | View |
| 2025-12-31 Option Award | 2026-01-05 5:01 pm | 2025-12-31 2035-12-31 | BIOLARGO INC. | BLGO | Park Linda Director | 101,736 | $0 | 1,265,761 (Direct) | View |
| 2025-12-31 Option Award | 2026-01-05 4:55 pm | 2025-12-31 2035-12-31 | BIOLARGO INC. | BLGO | Bray Christina Elaine Director | 101,736 | $0 | 1,265,761 (Direct) | View |
| 2025-12-31 Option Award | 2026-01-05 4:43 pm | 2025-12-31 2035-12-31 | BIOLARGO INC. | BLGO | STROMMEN JACK B. Director | 81,389 | $0 | 2,359,510 (Direct) | View |
| 2025-12-31 Option Award | 2026-01-05 4:30 pm | 2025-12-31 2035-12-31 | BIOLARGO INC. | BLGO | Marshall Dennis E Director | 223,820 | $0 | 10,391,026 (Direct) | View |
| 2025-11-14 Option Award | 2025-11-17 8:12 pm | N/A N/A | BIOLARGO INC. | BLGO | CODE KENNETH REAY Chief Science Officer | 313,754 | $0.16 | 25,751,505 (Direct) | View |
| 2025-11-14 Option Award | 2025-11-17 6:44 pm | N/A N/A | BIOLARGO INC. | BLGO | CALVERT DENNIS P President | 310,269 | $0.16 | 10,393,403 (Direct) | View |
| 2025-09-30 Option Award | 2025-10-02 3:52 pm | 2025-09-30 2035-09-30 | BIOLARGO INC. | BLGO | STROMMEN JACK B. Director | 88,235 | $0 | 2,278,121 (Direct) | View |
| 2025-09-30 Option Award | 2025-10-02 3:47 pm | 2025-09-30 2035-09-30 | BIOLARGO INC. | BLGO | Park Linda Director | 110,294 | $0 | 1,164,025 (Direct) | View |
| 2025-09-30 Option Award | 2025-10-02 3:45 pm | 2025-09-30 2035-09-30 | BIOLARGO INC. | BLGO | Bray Christina Elaine Director | 110,294 | $0 | 1,164,025 (Direct) | View |
| 2025-09-30 Option Award | 2025-10-02 3:43 pm | 2025-09-30 2035-09-30 | BIOLARGO INC. | BLGO | Marshall Dennis E Director | 242,645 | $0 | 10,024,828 (Direct) | View |
| 2025-07-14 Option Award | 2025-07-16 6:21 pm | N/A N/A | BIOLARGO INC. | BLGO | CALVERT DENNIS P President | 169,498 | $0.2 | 10,029,542 (Direct) | View |
| 2025-07-14 Option Award | 2025-07-16 6:21 pm | N/A N/A | BIOLARGO INC. | BLGO | CODE KENNETH REAY Chief Science Officer | 181,253 | $0.2 | 25,131,495 (Direct) | View |
| 2025-06-30 Option Award | 2025-07-02 5:56 pm | 2025-06-30 2035-06-30 | BIOLARGO INC. | BLGO | Park Linda Director | 93,750 | $0 | 1,053,731 (Direct) | View |
| 2025-06-30 Option Award | 2025-07-02 5:53 pm | 2025-06-30 2035-06-30 | BIOLARGO INC. | BLGO | STROMMEN JACK B. Director | 75,000 | $0 | 2,189,886 (Direct) | View |
| 2025-06-30 Option Award | 2025-07-02 5:21 pm | 2025-06-30 2035-06-30 | BIOLARGO INC. | BLGO | Bray Christina Elaine Director | 93,750 | $0 | 1,053,731 (Direct) | View |
| 2025-06-30 Option Award | 2025-07-02 5:10 pm | 2025-06-30 2035-06-30 | BIOLARGO INC. | BLGO | Marshall Dennis E Director | 225,251 | $0 | 14,342,878 (Direct) | View |
| 2024-12-31 Option Award | 2025-01-03 6:40 pm | N/A N/A | BIOLARGO INC. | BLGO | CODE KENNETH REAY Chief Science Officer | 57,666 | $0.19 | 25,120,245 (Direct) | View |
| 2024-12-31 Option Award | 2025-01-03 5:54 pm | 2024-12-31 2034-12-31 | BIOLARGO INC. | BLGO | STROMMEN JACK B. Director | 78,947 | $0 | 2,061,395 (Direct) | View |
| 2024-12-31 Option Award | 2025-01-03 5:53 pm | 2024-12-31 2034-12-31 | BIOLARGO INC. | BLGO | Marshall Dennis E Director | 98,684 | $0 | 4,624,625 (Direct) | View |
| 2024-12-31 Option Award | 2025-01-03 5:52 pm | 2024-12-31 2034-12-31 | BIOLARGO INC. | BLGO | Bray Christina Elaine Director | 98,684 | $0 | 893,017 (Direct) | View |
| 2024-12-31 Option Award | 2025-01-03 5:08 pm | 2024-12-31 2034-12-31 | BIOLARGO INC. | BLGO | Park Linda Director | 98,684 | $0 | 893,017 (Direct) | View |
| 2024-12-26 Option Award | 2024-12-30 3:30 pm | 2024-12-26 2034-12-26 | BIOLARGO INC. | BLGO | Marshall Dennis E Director | 118,422 | $0 | 4,525,941 (Direct) | View |
| 2024-09-30 Option Award | 2024-10-02 8:03 pm | 2024-09-30 2034-09-30 | BIOLARGO INC. | BLGO | STROMMEN JACK B. Director | 65,217 | $0 | 1,982,368 (Direct) | View |
| 2024-09-30 Option Award | 2024-10-02 7:57 pm | 2024-09-30 2034-09-30 | BIOLARGO INC. | BLGO | Park Linda Director | 81,522 | $0 | 794,333 (Direct) | View |