ATOS Stock Premarket

Atossa Therapeutics, Inc. Common Stock
ATOSNASDAQ • USD
2.82 USD
↗ 0.03 (1.18%)PRE MARKET (AS OF 05:02 AM EDT)
🟢Market: OPEN

Premarket trading runs 4:00 AM – 9:30 AM ET.

ATOS is trading at $2.82 in premarket, up $0.03 (1.18%) from its previous close of $2.79.

📅 ATOS reported earnings on Aug 17, 2026, with an estimated EPS of $-0.94. ATOS earnings details →

ATOS Premarket Chart

ATOS Premarket News

3d ago
One reason Atossa Therapeutics continues studying ESR1 mutations is their association with endocrine resistance in ER-positive breast cancer. Understanding how investigational (Z)-endoxifen interacts across clinically relevant ESR1 mutations remains an important area of our research. Learn more
3d ago
ATOS: Multiple Catalysts Converge in 2H26
3d ago
One reason Atossa Therapeutics continues studying ESR1 mutations is their association with endocrine resistance in ER-positive breast cancer. Understanding how investigational (Z)-endoxifen interacts across clinically relevant ESR1 mutations remains an important area of our research. Learn more
5d ago
Many breast cancer therapies begin their clinical journey in metastatic disease. Atossa Therapeutics has also focused on earlier treatment settings, studying investigational (Z)-endoxifen in newly diagnosed patients to better understand its biologic activity before surgery. Learn more:
6d ago
Atossa Therapeutics reported second quarter 2026 financial results and provided a corporate update, highlighting continued progress for (Z)-endoxifen across rare diseases and breast cancer. During the quarter, Atossa presented new data at AACR and ASCO and published research supporting the cont

Gap Analytics — 5-year history, 5% minimum gap

No qualifying gap events found for ATOS.

Frequently Asked Questions

What is ATOS's premarket price?

Atossa Therapeutics (ATOS) is trading at $2.82 in premarket, up $0.03 (1.18%) from the previous close of $2.79.

Why is ATOS moving in premarket?

Atossa Therapeutics (ATOS) is up 1.18% from its previous close in premarket trading. Premarket moves are usually driven by company-specific news, earnings results, analyst rating or price-target changes, or broad market and sector sentiment. Check the latest ATOS premarket headlines and gap history below for the likely catalyst.

When does ATOS premarket trading start?

Premarket trading for ATOS on the NASDAQ runs from 4:00 AM to 9:30 AM Eastern Time, ahead of the regular session (9:30 AM – 4:00 PM ET). After-hours runs from 4:00 PM to 8:00 PM ET.

When does ATOS report earnings?

ATOS reported earnings on Aug 17, 2026, with an estimated EPS of $-0.94.

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