BioLargo, Inc. (BLGO) Stock Analysis

Why this analysis is different

• A 9-signal quantitative MoonshotScore built from filings, insider activity, and market data — computed from the numbers, not from opinion.
• An AI Council read across up to eight perspectives — value, macro, quantitative, and momentum lenses — that shows where they disagree instead of averaging the tension away.
• Figures come straight from FMP and Yahoo Finance filings data. The AI writes the narrative around the numbers — it never edits the numbers.

BioLargo, Inc. (BLGO) Materials & Commodity Exposure

BioLargo, Inc. is an environmental engineering company specializing in advanced platform technologies for critical challenges including PFAS contamination, water purification, industrial odor control, and infection prevention. Leveraging numerous patents, the company provides innovative solutions and engineering services from its Westminster, California headquarters.

What Is the Investment Thesis for BLGO?

BioLargo, Inc. operates in the critical and growing environmental engineering sector, focusing on patented platform technologies for significant challenges like PFAS contamination and advanced water purification. The company's strategic positioning benefits from an increasing regulatory focus on environmental contaminants, which is expected to drive demand for its specialized solutions. With a gross margin of 42.3%, BioLargo demonstrates a healthy margin on its core offerings, indicating potential for profitability as it scales commercial contracts. Key value drivers include the commercialization success of its Advanced Oxidation system and Aqueous Electrostatic Concentrator, particularly in the expanding PFAS remediation market, and the adoption of CupriDyne Clean products in industrial settings. However, the company's current financial performance shows a profit margin of -230.1% and a market capitalization of $31.6M, reflecting its early-stage commercialization and unprofitability. As an OTC Other listed company, BLGO faces inherent risks associated with less stringent listing requirements and potentially lower liquidity, which could impact investor confidence and capital raising efforts. Investors should closely monitor the company's ability to secure and scale commercial contracts and navigate the competitive landscape to achieve sustainable revenue growth and improve profitability.

Based on FMP financials and quantitative analysis

BLGO Key Highlights

Market Capitalization of $31.6M, positioning BioLargo as a micro-cap company within the Basic Materials sector.

• Profit Margin of -230.1%, indicating significant net losses relative to revenue, characteristic of a development-stage company.
• Gross Margin of 42.3%, suggesting a solid margin on products and services sold before accounting for operating expenses.
• Beta of -0.14, indicating a low correlation with broader market movements, potentially offering portfolio diversification benefits.
• Employee count of 40, reflecting a lean operational structure focused on research, development, and specialized engineering services.

Who Are BLGO's Competitors?

BLGO is benchmarked below against 8 industry peers on price, market cap, and our AI MoonshotScore.

AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance

What Are BLGO's Key Strengths?

Extensive portfolio of issued patents protecting proprietary platform technologies.

• Diverse product pipeline addressing critical environmental challenges (PFAS, water, air, odors).
• Comprehensive environmental engineering services complement product offerings.
• Gross margin of 42.3% indicates healthy unit economics on products/services.
• Established company since 1991 with a track record in technology development.

What Are BLGO's Weaknesses?

Significant unprofitability with a profit margin of -230.1%.

• Operates as an OTC Other listed company, implying less stringent disclosure and lower liquidity.
• Small market capitalization of $31.6M, potentially limiting access to capital.
• Relatively small employee base (40 employees) for a company with diverse technology development.
• Reliance on successful commercialization and scaling of new technologies.

What Could Drive BLGO Stock Higher?

BLGO catalyst: Successful commercialization and widespread adoption of the Aqueous Electrostatic Concentrator for PFAS remediation, driven by increasing regulatory mandates and market demand.

• Securing new, significant commercial contracts for its CupriDyne Clean industrial products across various industrial sectors seeking odor and VOC control solutions.
• Development and market introduction of new applications or enhancements for its Advanced Oxidation system, expanding its utility in water and wastewater treatment.
• Continued expansion of its patent portfolio, further solidifying its intellectual property protection and competitive advantage in key technology areas.
• Strategic partnerships or licensing agreements that could accelerate the deployment and market penetration of BioLargo's patented technologies.

What Are the Key Risks for BLGO?

Financial-distress signal — its Altman Z-Score of -41.46 sits in the distress zone (elevated bankruptcy risk).

• Inconsistent delivery — missed Wall Street EPS estimates in 0 of the last 4 reported quarters.
• Weak fundamentals — a Piotroski F-Score of 2/9 flags soft profitability, leverage or efficiency.
• The company's significant unprofitability, evidenced by a -230.1% profit margin, poses a risk to its long-term financial sustainability without substantial revenue growth.
• As an OTC Other listed company, BioLargo faces risks of lower liquidity, wider bid-ask spreads, and potential difficulty in raising capital, which could impede growth initiatives.
• The competitive landscape in environmental engineering and water treatment is intense, with larger, well-capitalized players potentially limiting BioLargo's market penetration.
• Reliance on the successful commercialization of relatively new technologies means that market acceptance or technical challenges could hinder revenue generation.
• The beta of -0.14 suggests low correlation with the broader market, which could indicate specific company-centric risks not tied to overall economic trends.

What Are the Growth Opportunities for BLGO?

• **PFAS Remediation Market Expansion:** The global market for PFAS remediation is experiencing rapid growth due to increasing regulatory pressures and public awareness regarding 'forever chemicals.' BioLargo's Aqueous Electrostatic Concentrator (AEC) is specifically designed to remove PFAS from water, positioning the company to capitalize on this expanding market. With new regulations continuously emerging, the demand for effective and scalable PFAS treatment solutions is projected to grow significantly over the next decade, offering a substantial addressable market for BioLargo's patented technology.
• **Advanced Water and Wastewater Purification:** The global demand for clean water and efficient wastewater treatment continues to rise, driven by population growth, industrialization, and climate change. BioLargo's Advanced Oxidation system, which generates potent oxidative and energetic iodine species, offers a novel approach to water purification. This technology can address a wide range of contaminants, providing a competitive edge in municipal and industrial water treatment sectors. The market for advanced water treatment technologies is expected to see sustained growth, creating ongoing opportunities for BioLargo's patented solutions.
• **Industrial Odor and VOC Control:** Industries worldwide face increasing pressure to comply with environmental regulations regarding air emissions and odor control. BioLargo's CupriDyne Clean industrial products are engineered to effectively neutralize stubborn odors and volatile organic compounds (VOCs) across various industrial settings. This addresses a critical need for manufacturing plants, waste management facilities, and other industrial operations seeking to improve air quality and regulatory compliance. The market for industrial air pollution control is robust, offering consistent demand for BioLargo's specialized chemical solutions.
• **Air Quality Enhancement Technologies:** Beyond industrial odor control, BioLargo's broader expertise in environmental engineering extends to general air quality enhancement. With growing concerns over indoor and outdoor air pollution and their health impacts, there is a rising demand for innovative air purification technologies. BioLargo's platform technologies, which can be adapted for various applications, could tap into this expanding market for air quality solutions in commercial, institutional, and potentially residential settings, driven by public health initiatives and environmental standards.
• **Specialized Advanced Wound Care Products:** BioLargo also develops specialized advanced wound care products, leveraging its core scientific principles. The global advanced wound care market is a significant and growing segment within healthcare, driven by an aging population, increasing prevalence of chronic diseases like diabetes, and demand for faster healing solutions. While distinct from its environmental focus, this segment represents a diversification opportunity where BioLargo can apply its expertise in infection control and material science to address unmet medical needs, potentially generating additional revenue streams.

What Threats Does BLGO Face?

• Intense competition from larger, more established environmental technology and chemical companies.
• Regulatory changes that could impact demand for or specifications of their technologies.
• Challenges in securing and scaling commercial contracts in a competitive market.
• Difficulty in raising capital due to OTC listing and current unprofitability.
• Technological obsolescence or emergence of superior competing solutions.

What Are BLGO's Competitive Advantages?

• Numerous issued patents protecting their core platform technologies, creating barriers to entry for competitors.
• Proprietary technologies like the Advanced Oxidation system and Aqueous Electrostatic Concentrator offer unique solutions to complex problems.
• Specialized expertise in environmental engineering, allowing for comprehensive service offerings beyond product sales.
• Focus on high-impact environmental challenges such as PFAS, addressing critical and growing market needs.
• Diversified product portfolio spanning water treatment, air quality, odor control, and wound care, reducing reliance on a single market.

What Does BLGO Do?

Established in 1991 and headquartered in Westminster, California, BioLargo, Inc. operates as an environmental engineering company dedicated to the invention, development, and commercialization of sophisticated platform technologies. The company's core mission revolves around tackling pressing environmental challenges, which encompass a broad spectrum of issues such as per- and polyfluoroalkyl substances (PFAS) contamination, advanced water and wastewater purification, and the effective management of industrial odors and volatile organic compounds (VOCs). Beyond these areas, BioLargo also extends its technological reach into enhancing air quality and controlling infections, demonstrating a diversified approach to environmental and public health solutions. BioLargo maintains a robust product pipeline, underpinned by numerous issued patents that protect its innovative intellectual property. This patent portfolio forms a significant foundation for its technological offerings and competitive positioning. The company not only develops and commercializes these technologies but also provides comprehensive environmental engineering services, leveraging its expertise to implement practical solutions for clients. Key innovations include the Advanced Oxidation system, a water treatment solution engineered to generate potent oxidative and energetic iodine species for purification. Another critical product is the Aqueous Electrostatic Concentrator, specifically designed for the challenging task of eliminating PFAS from contaminated water sources. For industrial applications, BioLargo offers CupriDyne Clean industrial products, which are formulated to effectively neutralize stubborn odors and VOCs across diverse industrial settings. Additionally, the company develops specialized advanced wound care products, showcasing its ability to apply its core scientific principles to different market needs. BioLargo's operational model focuses on addressing specific, high-impact environmental problems with patented, scalable technologies.

What Products and Services Does BLGO Offer?

• Invent, develop, and commercialize sophisticated platform technologies.
• Address critical environmental challenges like PFAS contamination.
• Provide advanced water and wastewater purification solutions.
• Manage industrial odors and volatile organic compounds (VOCs) with specialized products.
• Develop technologies for enhancing air quality.
• Create solutions for infection control, including advanced wound care products.
• Leverage numerous issued patents to protect their proprietary technologies.
• Offer comprehensive environmental engineering services.

How Does BLGO Make Money?

• Develop and license patented environmental technologies to various industries and municipalities.
• Sell proprietary products like CupriDyne Clean for industrial odor and VOC control.
• Commercialize specialized systems such as the Aqueous Electrostatic Concentrator for PFAS removal.
• Provide environmental engineering services, offering expertise and implementation support for their technologies.
• Generate revenue from sales of advanced wound care products in the healthcare sector.

What Industry Does BLGO Operate In?

BioLargo, Inc. operates within the Basic Materials sector, specifically the Chemicals industry, with a focus on environmental engineering solutions. The company is positioned in a market driven by increasing global concerns over environmental degradation, stringent regulatory frameworks, and the growing demand for clean water, air, and waste management. Key market trends include the escalating need for PFAS remediation technologies, advancements in water and wastewater treatment, and industrial demand for effective odor and VOC control. BioLargo's patented technologies, such as the Aqueous Electrostatic Concentrator for PFAS and the Advanced Oxidation system for water purification, place it within a competitive landscape that includes established environmental services firms and specialized technology providers. The company aims to differentiate itself through its proprietary, high-efficacy solutions designed to address complex environmental challenges, seeking to capture market share in niche but high-value segments within the broader environmental technology industry.

Who Are BLGO's Key Customers?

• Industrial facilities requiring odor and VOC control solutions.
• Municipalities and water treatment plants seeking advanced water purification and PFAS remediation.
• Environmental engineering firms and consultants.
• Healthcare providers and patients for advanced wound care products.
• Organizations and entities facing air quality challenges.

Over the past six months, BioLargo, Inc. insiders filed 15 SEC Form 4 transactions — 0 sales and 15 purchases. On net that is roughly 2.9M shares acquired (about $362K) — insiders putting money in tends to read as conviction.

BioLargo, Inc. has missed Wall Street's EPS estimate in 0 of its last 4 reported quarters — a mixed record worth weighing. Reported results have landed about 15.2% above estimates on average.

BioLargo, Inc.'s Piotroski F-Score is 2/9, a 9-point checklist of profitability, leverage and efficiency — flagging fundamental weakness worth scrutiny. Its Altman Z-Score of -41.46 places it in the distress zone, a signal of elevated financial risk.

Key Financial Metrics

Its free cash flow yield is -26.0%, a gauge of the cash the business throws off relative to its market value. A current ratio of 1.10 indicates the company holds enough short-term assets to cover its near-term obligations. Its earnings yield is -35.7%, the inverse of the P/E and a quick read on earnings relative to price.

BioLargo, Inc. (BLGO) Valuation Context

Valued at $31.6M, BLGO is classified as a micro-cap stock. Relative to its peer group, BLGO's quantitative score of 46/100 is roughly in line with the peer average of 44/100.

BLGO Revenue & Earnings Trend

In Q2 FY2026, BLGO generated $1.2M in top-line revenue, marking a sequential increase of 11.9%. The company recorded a net loss of $2.8M, with diluted EPS of $-0.01. Revenue has increased across the last three reported quarters, suggesting sustained momentum for this micro-cap Basic Materials company. Across the four most recent quarters, BLGO averaged $-0.01 in diluted EPS.

Company Profile

BioLargo, Inc. operates in the Chemicals - Specialty industry within the Basic Materials sector. It is headquartered in Westminster, US. The company is led by CEO Dennis Calvert. BLGO has traded publicly since 2007.

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Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

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