← Back to All US Stocks

Atossa Therapeutics, Inc.. (ATOS) Stock Fundamental Analysis & AI Rating 2026

ATOS Nasdaq Pharmaceutical Preparations DE CIK: 0001488039
Updated This Month • Analysis: Mar 20, 2026 • SEC Data: 2025-09-30
Combined AI Rating
SELL
81% Confidence
AGREEMENT
SELL
85% Conf
HOLD
77% Conf

📊 ATOS Key Takeaways

Revenue: $0.0
Net Margin: N/A
Free Cash Flow: $-19.2M
Current Ratio: 6.77x
Debt/Equity: 0.00x
EPS: $-0.18
AI Rating: SELL with 85% confidence
Atossa Therapeutics, Inc.. (ATOS) receives a SELL rating with 81% confidence from our AI fundamental analysis based on SEC 10-K filings. With revenue of $0, and return on equity (ROE) of -47.9%, Atossa Therapeutics, Inc.. demonstrates mixed fundamentals in the Healthcare sector. Below is our complete ATOS stock analysis for 2026.

Is Atossa Therapeutics, Inc.. (ATOS) a Good Investment?

Claude

Atossa Therapeutics is a pre-revenue pharmaceutical company with severe cash burn and negative returns on equity and assets, indicating value destruction. While the company maintains a strong cash position of $51.8M, at a quarterly burn rate of $19.2M in operating cash flow, the runway extends only ~2.7 years without revenue generation. The complete absence of revenue combined with mounting operating losses makes this a high-risk early-stage biotech with unproven commercial viability.

ChatGPT

Atossa Therapeutics has a strong balance sheet with $51.84M of cash, no long-term debt, and very high liquidity, which supports continued clinical development without immediate financing pressure. However, the business remains pre-revenue and deeply unprofitable, with negative operating cash flow and no evidence yet of self-sustaining growth, so the fundamentals are financially stable but operationally speculative.

Why Buy Atossa Therapeutics, Inc.. Stock? ATOS Key Strengths

Claude
  • + Strong liquidity position with $51.8M in cash and 6.77x current ratio providing runway for continued R&D
  • + Minimal debt burden with zero long-term debt and 0.00x debt-to-equity ratio reducing financial distress risk
  • + Operating expenses remain controlled relative to cash reserves, suggesting disciplined cash management
ChatGPT
  • + Very strong liquidity with a 6.77x current and quick ratio
  • + Debt-free balance sheet with $49.79M of equity and no long-term debt
  • + Cash reserves cover multiple years of current operating cash burn

ATOS Stock Risks: Atossa Therapeutics, Inc.. Investment Risks

Claude
  • ! Zero revenue with $25.7M quarterly operating losses indicates pre-commercial stage with unproven product-market fit
  • ! Negative FCF of $19.2M per quarter limits R&D spending flexibility and creates near-term existential risk if funding unavailable
  • ! Severely negative ROE (-47.9%) and ROA (-41.1%) demonstrate substantial shareholder value destruction and capital inefficiency
  • ! Cash runway of approximately 2.7 years creates near-term dilution risk if additional capital raises required before achieving profitability
ChatGPT
  • ! Zero revenue means the business is entirely dependent on external capital and pipeline progress
  • ! Persistent operating and net losses indicate weak profitability with no near-term earnings support
  • ! Negative free cash flow and high cash burn could force dilution if development timelines extend

Key Metrics to Watch

Claude
  • * Quarterly operating cash burn rate trend and runway to profitability/next capital raise
  • * Clinical trial progression and regulatory milestone achievements for pipeline drugs
  • * Cash balance preservation and any equity or debt financing announcements
ChatGPT
  • * Quarterly operating cash burn relative to the $51.84M cash balance
  • * Any transition from zero revenue toward licensing, collaboration, or product revenue

Atossa Therapeutics, Inc.. (ATOS) Financial Metrics & Key Ratios

Revenue
$0.0
Net Income
$-23.8M
EPS (Diluted)
$-0.18
Free Cash Flow
$-19.2M
Total Assets
$58.0M
Cash Position
$51.8M

💡 AI Analyst Insight

Strong liquidity with a 6.77x current ratio provides a solid financial cushion.

ATOS Profit Margin, ROE & Profitability Analysis

Gross Margin N/A
Operating Margin N/A
Net Margin N/A
ROE -47.9%
ROA -41.1%
FCF Margin N/A

ATOS vs Healthcare Sector: How Atossa Therapeutics, Inc.. Compares

How Atossa Therapeutics, Inc.. compares to Healthcare sector averages

Net Margin
ATOS 0.0%
vs
Sector Avg 12.0%
ATOS Sector
ROE
ATOS -47.9%
vs
Sector Avg 15.0%
ATOS Sector
Current Ratio
ATOS 6.8x
vs
Sector Avg 2.0x
ATOS Sector
Debt/Equity
ATOS 0.0x
vs
Sector Avg 0.6x
ATOS Sector

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

Is Atossa Therapeutics, Inc.. Stock Overvalued? ATOS Valuation Analysis 2026

Based on fundamental analysis, Atossa Therapeutics, Inc.. has mixed fundamental signals relative to the Healthcare sector in 2026.

Return on Equity
-47.9%
Sector avg: 15%
Net Profit Margin
N/A
Sector avg: 12%
Revenue Growth
N/A
Year-over-year
Debt/Equity
0.00x
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.

Atossa Therapeutics, Inc.. Balance Sheet: ATOS Debt, Cash & Liquidity

Current Ratio
6.77x
Quick Ratio
6.77x
Debt/Equity
0.00x
Debt/Assets
14.2%
Interest Coverage
-14,408.63x
Long-term Debt
$0.0

ATOS Revenue & Earnings Growth: 5-Year Financial Trend

ATOS 5-year financial data: Year 2012: Revenue $483.3K, Net Income N/A, EPS N/A. Year 2013: Revenue $1.1M, Net Income N/A, EPS N/A. Year 2014: Revenue $632.6K, Net Income N/A, EPS N/A. Year 2015: Revenue $40.1K, Net Income N/A, EPS N/A. Year 2016: Revenue $1.8K, Net Income N/A, EPS N/A.
Revenue
Net Income
EPS (right axis)

5-Year Trend Summary: Atossa Therapeutics, Inc..'s revenue has declined by 100% over the 5-year period, indicating business contraction. The most recent EPS of $-3.04 indicates the company is currently unprofitable.

ATOS 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
N/A
Free cash flow / Revenue

ATOS Quarterly Earnings & Performance

Quarterly financial performance data for Atossa Therapeutics, Inc.. including revenue, net income, and earnings per share.
Quarter Revenue Net Income EPS
Q3 2016 N/A $204.7K N/A
Q2 2016 N/A -$1.7M N/A
Q1 2016 N/A -$2.3M N/A
Q3 2015 $3.4K -$3.2M N/A
Q2 2015 $9.9K -$3.1M N/A
Q1 2015 N/A -$2.4M N/A
Q3 2014 N/A -$3.2M N/A
Q2 2014 N/A -$2.6M N/A

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

Atossa Therapeutics, Inc.. Dividends, Buybacks & Capital Allocation

Operating Cash Flow
-$19.2M
Cash generated from operations
Capital Expenditures
$16.0K
Investment in assets
Dividends
None
No dividend program

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

Access official SEC EDGAR filings for Atossa Therapeutics, Inc.. (CIK: 0001488039)

📋 Recent SEC Filings

Date Form Document Action
Apr 16, 2026 8-K d107774d8k.htm View →
Mar 31, 2026 4 xslF345X06/ownership.xml View →
Mar 30, 2026 4 xslF345X06/ownership.xml View →
Mar 30, 2026 DEF 14A atos-20260330.htm View →
Mar 25, 2026 10-K atos-20251231.htm View →

Frequently Asked Questions about ATOS

What is the AI rating for ATOS?

Atossa Therapeutics, Inc.. (ATOS) has a Combined AI Rating of SELL from Claude (SELL) and ChatGPT (HOLD) with 81% combined confidence, based on fundamental analysis of SEC EDGAR filings.

What are ATOS's key strengths?

Claude: Strong liquidity position with $51.8M in cash and 6.77x current ratio providing runway for continued R&D. Minimal debt burden with zero long-term debt and 0.00x debt-to-equity ratio reducing financial distress risk. ChatGPT: Very strong liquidity with a 6.77x current and quick ratio. Debt-free balance sheet with $49.79M of equity and no long-term debt.

What are the risks of investing in ATOS?

Claude: Zero revenue with $25.7M quarterly operating losses indicates pre-commercial stage with unproven product-market fit. Negative FCF of $19.2M per quarter limits R&D spending flexibility and creates near-term existential risk if funding unavailable. ChatGPT: Zero revenue means the business is entirely dependent on external capital and pipeline progress. Persistent operating and net losses indicate weak profitability with no near-term earnings support.

What is ATOS's revenue and growth?

Atossa Therapeutics, Inc.. reported revenue of $0.0.

Does ATOS pay dividends?

Atossa Therapeutics, Inc.. does not currently pay dividends.

Where can I find ATOS SEC filings?

Official SEC filings for Atossa Therapeutics, Inc.. (CIK: 0001488039) including 10-K, 10-Q, and 8-K reports are available on SEC EDGAR.

What is ATOS's EPS?

Atossa Therapeutics, Inc.. has a diluted EPS of $-0.18.

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 ATOS a good stock to buy right now?

Based on our AI fundamental analysis in April 2026, Atossa Therapeutics, Inc.. has a SELL rating with 81% confidence. Review the strengths and risks sections above before making a decision. This is not investment advice.

Is ATOS stock overvalued or undervalued?

Valuation metrics for ATOS: ROE of -47.9% (sector avg: 15%), net margin of N/A (sector avg: 12%). Compare these metrics with sector averages to assess valuation.

Should I buy ATOS stock in 2026?

Our dual AI analysis gives Atossa Therapeutics, 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 ATOS's free cash flow?

Atossa Therapeutics, Inc..'s operating cash flow is $-19.2M, with capital expenditures of $16.0K.

How does ATOS compare to other Healthcare stocks?

Vs Healthcare sector averages: Net margin N/A (avg: 12%), ROE -47.9% (avg: 15%), current ratio 6.77 (avg: 2).

Top Rated Stocks
NSSC 92% MLI 92% MELI 92% MDXG 92% MANH 92% INVA 92% GGG 92% GCT 92% FTNT 92% FSLR 92%
Sector: All Healthcare Stocks →
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 20, 2026 | Data as of: 2025-09-30 | Powered by Claude AI