ATOS ATOSSA THERAPEUTICS, INC.

BEARISH Impact: 6/10 424B5
Horizon weeks Filed Jun 12, 2026 Processed 1d 2h ago SEC 0001193125-26-268597
Notable filing: 424B5

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Executive Summary

Atossa Therapeutics is conducting a registered direct offering of 1,363,637 shares of common stock at $3.30 per share, bundled with Series A and Series B warrants to purchase up to 2,727,274 additional shares at $4.40 per share. The company expects net proceeds of approximately $4.1 million for clinical development and working capital, but explicitly states these funds are insufficient to complete development of any product candidate. The filing also discloses a going-concern warning, with existing resources likely insufficient to fund operations for the next 12 months.

Actionable Insight

This dilutive offering at a 25% discount to market price signals acute capital needs from a company with a going-concern warning and only ~3 months of cash at current burn rate. The warrants add further overhang. Monitor for additional financing needs within 6-12 months and any clinical data catalysts that could alter the cash runway trajectory.

Key Facts

  • Offering 1,363,637 shares at $3.30 per share, representing ~13.7% dilution of outstanding shares
  • Warrants to purchase up to 2,727,274 additional shares at $4.40 per share (exercisable starting 6 months from issuance)
  • Net proceeds estimated at ~$4.1 million after fees and expenses
  • Company states existing resources likely insufficient to fund operations for next 12 months
  • Net loss of $9.6 million for Q1 2026, accumulated deficit of $256.2 million
  • Cash and cash equivalents of $31.7 million as of March 31, 2026
  • Offering priced at $3.30 vs last sale price of $4.40 on June 10, 2026 (25% discount)
  • Placement agent fees of 7.0% of gross proceeds ($315,000) plus warrants

Financial Impact

Dilution of ~13.7% from share issuance, plus potential dilution of up to 27.3% from warrants if exercised. Net proceeds of ~$4.1M are insufficient to fund operations beyond near term given $9.6M quarterly cash burn.

dilutioncash runwaygoing concern

Risk Factors

  • Going-concern risk: company states existing resources insufficient for 12 months of operations
  • Significant dilution: 13.7% from shares plus up to 27.3% from warrants
  • Warrant overhang: 2.7M shares exercisable at $4.40 (at-the-money) could pressure stock
  • No revenue and $9.6M quarterly net loss
  • Nasdaq compliance risk (recently regained minimum bid price after reverse split)

Market Snapshot

Exchange
Nasdaq
Sector
Pharmaceutical Preparations
Analyst Consensus
89% bullish (9 analysts)

Documents Analyzed

This report is based on 4 SEC documents filed with EDGAR.

DocumentAccession Number
424B5 Filing (Primary)0001193125-26-268597
Document: 0001193125-26-268597-index-headers.html0001193125-26-268597
Document: 0001193125-26-268597-index.html0001193125-26-268597
Document: 0001193125-26-268597.txt0001193125-26-268597
2 reports for ATOS
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Type Now
Jun 12, 2026
1d ago
424B5
BEARISH ★ 6/10
$2.58 awaiting T+20awaiting T+20$2.46 (+4.65%)
Apr 16, 2026
8w ago
8-K
BULLISH ★ 7/10
$5.77 $5.16▼ −10.57%▼ −16.39%$2.46 (−57.37%)
Showing 2 of 2

US Market Status

Market Closed — Opens Mon (45h 24m)

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