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424B5 ·Filed Jun 12, 2026

ATOS

ATOSSA THERAPEUTICS, INC.
BEARISH
Impact 6/10
Horizonweeks Processed4mo ago SEC0001193125-26-268597
Notable filing: 424B5
Actionable Insight ▼ Bearish

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.

DirectionBearish
Confidencehigh
Horizonweeks
Final — all horizons settled through T+60d
ATOS ▲ +2.24% at T+60d
SHORT call ✗ call lost -2.24% · α vs SPY +1.03% · entry $2.46 → $2.52
Entry = T+0 close
Jun 12, 2026
via day close
T+1d
-4.47%
call +4.47% · α +6.23%
$2.35
settled 5mo ago
T+5d
-18.29%
call +18.29% · α +18.97%
$2.01
settled 4mo ago
T+20d
-3.66%
call +3.66% · α +5.44%
$2.37
settled 4mo ago
T+60d
+2.24%
call -2.24% · α +1.03%
$2.52
settled 7w ago

Price Chart

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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.

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)

Investment Themes

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
7 reports for ATOS
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for ATOS — sortable, filterable
TypeNow
Oct 9, 2026
18d ago
8-K
NEUTRAL ★ 4/10
$2.44awaiting T+60—$2.38 (−2.46%)
Sep 29, 2026
28d ago
8-K
NEUTRAL ★ 4/10
$1.99awaiting T+60—$2.38 (+19.60%)
Sep 18, 2026
5w ago
8-K
NEUTRAL ★ 3/10
$2.25awaiting T+60—$2.38 (+5.78%)
Aug 7, 2026
11w ago
8-K
NEUTRAL ★ 4/10
$2.36awaiting T+60—$2.38 (+0.85%)
Aug 7, 2026
11w ago
Press Release
NEUTRAL ★ 4/10
$2.36awaiting T+60—$2.38 (+0.85%)
Jun 12, 2026
19w ago
424B5
BEARISH ★ 6/10
$2.46 $2.52▼ −2.24%▲ +1.03%$2.38 (+3.25%)
Apr 16, 2026
27w ago
8-K
BULLISH ★ 7/10
$5.77 $2.40▼ −58.41%▼ −65.45%$2.38 (−58.75%)
Showing 7 of 7

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Report published Jun 12, 2026