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Biolargo, Inc.. (BLGO) Stock Fundamental Analysis & AI Rating 2026

BLGO OTC Chemicals & Allied Products DE CIK: 0000880242
Updated This Month • Analysis: Mar 21, 2026 • SEC Data: 2025-12-31
Combined AI Rating
SELL
88% Confidence
AGREEMENT
STRONG SELL
92% Conf
SELL
84% Conf

📊 BLGO Key Takeaways

Revenue: $7.8M
Net Margin: -151.7%
Free Cash Flow: $-8.3M
Current Ratio: 1.01x
Debt/Equity: 0.51x
EPS: $0.00
AI Rating: STRONG SELL with 92% confidence
Biolargo, Inc.. (BLGO) receives a SELL rating with 88% confidence from our AI fundamental analysis based on SEC 10-K filings. With revenue of $7.8M, net profit margin of -151.7%, and return on equity (ROE) of -291.4%, Biolargo, Inc.. demonstrates mixed fundamentals in the Materials sector. Below is our complete BLGO stock analysis for 2026.

Is Biolargo, Inc.. (BLGO) a Good Investment?

Claude

BioLargo demonstrates severe operational distress with negative operating margins of -191.3% and negative free cash flow of -8.3M despite achieving 2,383.8% revenue growth. The company is consuming cash at an unsustainable rate with only 3.9M in cash reserves against 6.8M in liabilities, indicating critical liquidity risk. Deteriorating fundamentals combined with substantial operating losses and negative returns on equity and assets suggest the company is not viable in its current operational structure.

ChatGPT

BioLargo is showing exceptional top-line growth, but the quality of that growth is weak because it is still paired with deeply negative operating margins and heavy cash burn. Liquidity is thin and interest coverage is negative, so unless the company can convert recent revenue growth into sustainable gross profit and sharply reduce operating losses, its financial position remains fragile.

Why Buy Biolargo, Inc.. Stock? BLGO Key Strengths

Claude
  • + Exceptional revenue growth of 2,383.8% year-over-year demonstrates strong commercial traction
  • + Gross margin of 43.9% indicates viable unit economics and pricing power at the product level
  • + Moderate leverage with Debt/Equity ratio of 0.51x provides some balance sheet flexibility
ChatGPT
  • + Revenue growth is extremely strong, indicating improving commercial traction
  • + Gross margin of 43.9% suggests the core products/services can generate meaningful gross profit
  • + Cash balance of $3.88M provides some near-term operating flexibility

BLGO Stock Risks: Biolargo, Inc.. Investment Risks

Claude
  • ! Severe cash burn with operating cash flow of -8.3M and only 3.9M in cash reserves suggests runway of less than 6 months
  • ! Operating losses of -14.9M far exceed gross profit of 3.4M indicating unsustainable cost structure and lack of operational leverage
  • ! Negative interest coverage ratio of -27.5x demonstrates inability to service debt from operating income; company dependent on cash reserves
  • ! Negative ROE of -291.4% and ROA of -141.7% indicate value destruction and inefficient asset deployment
  • ! Current ratio of 1.01x demonstrates critically tight liquidity with minimal buffer for operational disruptions
ChatGPT
  • ! Operating margin of -191.3% shows the business is far from scale-efficient
  • ! Free cash flow of -$8.32M and negative operating cash flow indicate ongoing dependence on external financing
  • ! Current ratio of 1.01x and negative interest coverage point to tight liquidity and debt-servicing risk

Key Metrics to Watch

Claude
  • * Operating cash flow trend - critical indicator of sustainable operations and path to profitability
  • * Monthly cash burn rate and cash runway - survival metric given current burn rates
  • * Gross profit dollars and operating expense ratio - whether revenue growth will eventually drive operational leverage
  • * Debt covenant compliance and refinancing needs - refinancing risk given negative EBITDA
  • * Path to operating profitability - specific milestones and timeline for reaching positive operating income
ChatGPT
  • * Operating cash flow improvement relative to revenue growth
  • * Operating margin trend and path toward breakeven

Biolargo, Inc.. (BLGO) Financial Metrics & Key Ratios

Revenue
$7.8M
Net Income
$-11.8M
EPS (Diluted)
$0.00
Free Cash Flow
$-8.3M
Total Assets
$8.3M
Cash Position
$3.9M

💡 AI Analyst Insight

Biolargo, Inc.. presents a mixed fundamental picture. Review the detailed metrics above to form your own investment thesis.

BLGO Profit Margin, ROE & Profitability Analysis

Gross Margin 43.9%
Operating Margin -191.3%
Net Margin -151.7%
ROE -291.4%
ROA -141.7%
FCF Margin -107.1%

BLGO vs Materials Sector: How Biolargo, Inc.. Compares

How Biolargo, Inc.. compares to Materials sector averages

Net Margin
BLGO -151.7%
vs
Sector Avg 10.0%
BLGO Sector
ROE
BLGO -291.4%
vs
Sector Avg 14.0%
BLGO Sector
Current Ratio
BLGO 1.0x
vs
Sector Avg 1.6x
BLGO Sector
Debt/Equity
BLGO 0.5x
vs
Sector Avg 0.6x
BLGO Sector

Sector benchmarks are approximate industry averages. Actual sector performance may vary.

Is Biolargo, Inc.. Stock Overvalued? BLGO Valuation Analysis 2026

Based on fundamental analysis, Biolargo, Inc.. shows some fundamental concerns relative to the Materials sector in 2026.

Return on Equity
-291.4%
Sector avg: 14%
Net Profit Margin
-151.7%
Sector avg: 10%
Revenue Growth
N/A
Year-over-year
Debt/Equity
0.51x
Sector avg: 0.6x

Note: This is a fundamental analysis based on SEC filings. For P/E ratio, price targets, and market-based valuation, consult financial data providers. This is not investment advice.

Biolargo, Inc.. Balance Sheet: BLGO Debt, Cash & Liquidity

Current Ratio
1.01x
Quick Ratio
0.95x
Debt/Equity
0.51x
Debt/Assets
81.6%
Interest Coverage
-27.51x
Long-term Debt
$2.1M

BLGO Revenue & Earnings Growth: 5-Year Financial Trend

BLGO 5-year financial data: Year 2021: Revenue $2.5M, Net Income -$9.7M, EPS N/A. Year 2022: Revenue $5.9M, Net Income -$6.9M, EPS $-0.03. Year 2023: Revenue $12.2M, Net Income -$5.1M, EPS $-0.02. Year 2024: Revenue $17.8M, Net Income -$4.6M, EPS $-0.01. Year 2025: Revenue $17.8M, Net Income -$4.3M, EPS $-0.01.
Revenue
Net Income
EPS (right axis)

5-Year Trend Summary: Biolargo, Inc..'s revenue has grown significantly by 602% over the 5-year period, indicating strong business expansion. The most recent EPS of $-0.01 indicates the company is currently unprofitable.

BLGO Revenue Growth, EPS Growth & YoY Performance

Revenue Growth
N/A
Year-over-year
Net Income Growth
N/A
Year-over-year
EPS Growth
N/A
Earnings per share
FCF Margin
-107.1%
Free cash flow / Revenue

BLGO Quarterly Earnings & Performance

Quarterly financial performance data for Biolargo, Inc.. including revenue, net income, and earnings per share.
Quarter Revenue Net Income EPS
Q3 2025 $1.1M -$1.1M $0.00
Q2 2025 $2.8M -$780.0K $0.00
Q1 2025 $3.3M -$775.0K $0.00
Q3 2024 $2.7M -$494.0K $0.00
Q2 2024 $1.4M -$494.0K $0.00
Q1 2024 $3.7M -$494.0K $0.00
Q3 2023 $1.5M -$494.0K $0.00
Q2 2023 $1.3M -$494.0K $-0.01

Data sourced from SEC EDGAR 10-Q quarterly filings. Figures may represent quarterly or cumulative values.

Biolargo, Inc.. Dividends, Buybacks & Capital Allocation

Operating Cash Flow
-$8.3M
Cash generated from operations
Capital Expenditures
$18.8K
Investment in assets
Dividends
None
No dividend program

BLGO SEC Filings: Latest 10-K & 10-Q Analysis

Access official SEC EDGAR filings for Biolargo, Inc.. (CIK: 0000880242)

📋 Recent SEC Filings

Date Form Document Action
Apr 9, 2026 S-1 blgo20260401_s1.htm View →
Apr 9, 2026 S-1 blgo20260322_s1.htm View →
Apr 2, 2026 4 xslF345X06/rdgdoc.xml View →
Apr 1, 2026 4 xslF345X06/rdgdoc.xml View →
Apr 1, 2026 4 xslF345X06/rdgdoc.xml View →

Frequently Asked Questions about BLGO

What is the AI rating for BLGO?

Biolargo, Inc.. (BLGO) has a Combined AI Rating of SELL from Claude (STRONG SELL) and ChatGPT (SELL) with 88% combined confidence, based on fundamental analysis of SEC EDGAR filings.

What are BLGO's key strengths?

Claude: Exceptional revenue growth of 2,383.8% year-over-year demonstrates strong commercial traction. Gross margin of 43.9% indicates viable unit economics and pricing power at the product level. ChatGPT: Revenue growth is extremely strong, indicating improving commercial traction. Gross margin of 43.9% suggests the core products/services can generate meaningful gross profit.

What are the risks of investing in BLGO?

Claude: Severe cash burn with operating cash flow of -8.3M and only 3.9M in cash reserves suggests runway of less than 6 months. Operating losses of -14.9M far exceed gross profit of 3.4M indicating unsustainable cost structure and lack of operational leverage. ChatGPT: Operating margin of -191.3% shows the business is far from scale-efficient. Free cash flow of -$8.32M and negative operating cash flow indicate ongoing dependence on external financing.

What is BLGO's revenue and growth?

Biolargo, Inc.. reported revenue of $7.8M.

Does BLGO pay dividends?

Biolargo, Inc.. does not currently pay dividends.

Where can I find BLGO SEC filings?

Official SEC filings for Biolargo, Inc.. (CIK: 0000880242) including 10-K, 10-Q, and 8-K reports are available on SEC EDGAR.

What is BLGO's EPS?

Biolargo, Inc.. has a diluted EPS of $0.00.

How is the AI analysis conducted?

Two independent AI systems — Claude (Anthropic) and ChatGPT (OpenAI) — analyze SEC EDGAR filings including 10-K annual reports and 10-Q quarterly reports. Each AI evaluates financial health, profitability ratios, balance sheet strength, and growth metrics. The combined rating reflects both perspectives for balanced insights.

Is BLGO a good stock to buy right now?

Based on our AI fundamental analysis in April 2026, Biolargo, Inc.. has a SELL rating with 88% confidence. Review the strengths and risks sections above before making a decision. This is not investment advice.

Is BLGO stock overvalued or undervalued?

Valuation metrics for BLGO: ROE of -291.4% (sector avg: 14%), net margin of -151.7% (sector avg: 10%). Compare these metrics with sector averages to assess valuation.

Should I buy BLGO stock in 2026?

Our dual AI analysis gives Biolargo, Inc.. a combined SELL rating for 2026. Revenue is data pending, with profitability at or below sector average. Always conduct your own research.

What is BLGO's free cash flow?

Biolargo, Inc..'s operating cash flow is $-8.3M, with capital expenditures of $18.8K. FCF margin is -107.1%.

How does BLGO compare to other Materials stocks?

Vs Materials sector averages: Net margin -151.7% (avg: 10%), ROE -291.4% (avg: 14%), current ratio 1.01 (avg: 1.6).

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Disclaimer: This analysis is generated by Claude AI (Anthropic) and ChatGPT (OpenAI) based on publicly available SEC EDGAR filings. It does not include stock price data and should not be considered financial advice. All fundamental data is sourced from SEC public domain filings. Always conduct your own research and consult with a qualified financial advisor before making investment decisions.
Data Source: SEC EDGAR | Analysis Date: Mar 21, 2026 | Data as of: 2025-12-31 | Powered by Claude AI