BioLargo, Inc. (BLGO)
OTCMKTS · Delayed Price · Currency is USD
0.1587
+0.0007 (0.46%)
Nov 4, 2025, 3:50 PM EST
BioLargo Company Description
BioLargo, Inc. invents, develops, and commercializes various platform technologies.
The company’s technologies solve challenging environmental problems comprising per - and polyfluoroalkyl substances (PFAS) water contamination, advanced water and wastewater treatment, industrial odor and volatile organic compounds control, air quality control, infection control, and myriad environmental remediation.
It provides full-service environmental engineering services. BioLargo, Inc. is based in Westminster, California.
BioLargo, Inc.

| Country | United States |
| Founded | 1991 |
| Industry | Chemicals |
| Sector | Materials |
| Employees | 44 |
| CEO | Dennis Calvert |
Contact Details
Address: 14921 Chestnut Street Westminster, Delaware 92683 United States | |
| Phone | 888 400 2863 |
| Website | biolargo.com |
Stock Details
| Ticker Symbol | BLGO |
| Exchange | OTCMKTS |
| Stock Type | Common Stock |
| Fiscal Year | January - December |
| Reporting Currency | USD |
| ISIN Number | US09065A1007 |
| SIC Code | 2860 |
Key Executives
| Name | Position |
|---|---|
| Dennis P. Calvert | Chairman, President and Chief Executive Officer |
| Charles K. Dargan II, C.F.A. | Chief Financial Officer |
| Joseph L. Provenzano | Executive Vice President of Operations, Corporate Secretary and Director |
| Kenneth Reay Code | Chief Science Officer and Director |
| Steven V. Harrison II | President of Clyra Medical Technologies Inc |
| Randall Moore | President of BioLargo Engineering, Science and Technologies, LLC |
| Dr. Richard Smith Ph.D. | President of BioLargo Water |
| Tonya Chandler | President of BioLargo Equipment Solutions and Technologies |