# Atossa Therapeutics (ATOS) — Overview

ATOS · NASDAQ · Stock

Canonical page: https://www.lighthorse.io/tickers/atos

## Price

Last close $2.65 on Oct 15, 2026. 52-week range $1.75 – $15.75.

## Company profile

Atossa Therapeutics Inc is a clinical-stage biopharmaceutical company engaged in the development of proprietary medicines for oncology, with a focus on breast cancer and related conditions. The company's lead product candidate, oral (Z)-endoxifen, is a selective estrogen receptor modulator and degrader (SERM/SERD) in Phase 2 clinical development, being evaluated for the treatment and prevention of breast cancer and other indications.

## Financials

| Metric | Value |
| --- | --- |
| Revenue (trailing twelve months) | $0.00 |
| Revenue (quarter) | $0.00 |
| Revenue growth (year over year) | 0.00% |
| Gross profit (trailing twelve months) | $0.00 |
| Gross margin | 0.00% |
| Net income (trailing twelve months) | $0.00 |
| Net income (quarter) | −$8.5M |
| Net income growth (year over year) | -0.81% |
| Net margin | 0.00% |
| Return on equity | -89.23% |
| EPS (trailing twelve months) | −$4.34 |
| Book value per share | $2.69 |
| P/E (trailing twelve months) | — |
| Price to book | 1.0 |
| Debt to assets | 16.89% |
| Payout ratio | 0.00% |
| Dividend yield | 0.00% |

## Frequently Asked Questions

### How do I buy stock in Atossa Therapeutics (ATOS)?

ATOS trades commission-free with a Light Horse Securities brokerage account — from the mobile app, the web at [Light Horse Dashboard](https://portal.lighthorse.io), the trading API, or an [AI agent connected over MCP](/instructions/ai/claude). The trade panel on this page places the order once you are signed in.

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Data provided by [AInvest](https://www.ainvest.com).