ALT Altimmune, Inc.

NEUTRAL Impact: 5/10 424B5
Horizon months Filed Apr 24, 2026 Processed 1mo ago SEC 0001104659-26-047979
Notable filing: 424B5
Latest settled — T+20d ⚠ clustered
ALT ▲ +2.81% at T+20d
NEUTRAL call ✓ call won +2.81% · α vs SPY -1.22% · entry $2.85 → $2.93
Next anchor: T+60d in 5w
Last close $2.61 (close Jun 12) · -8.42% from $2.85 entry
Entry anchored
Apr 23, 03:59 PM ET
via Databento tick
T+1d
-1.75%
call -1.75% · α -1.92%
$2.80
settled 7w ago
T+5d
-8.77%
call -8.77% · α -9.68%
$2.60
settled 7w ago
T+20d
+2.81%
call +2.81% · α -1.22%
$2.93
settled 25d ago
T+60d
call — · α —
in 5w

Price Chart

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Executive Summary

Altimmune is raising $211.5 million through a public offering of 64.25 million shares of common stock and 75 million common stock warrants, priced at $3.00 per share. The proceeds will fund the Phase 3 trial of pemvidutide for MASH and general corporate purposes. This is a dilutive capital raise following a recent share authorization increase.

Actionable Insight

Monitor upcoming Phase 3 trial enrollment and clinical data timelines for pemvidutide in MASH, as successful results would be the key catalyst for value creation from this capital raise. Watch for any insider trading activity after the 90-day lock-up period expires.

Key Facts

  • Offering 64.25 million shares of common stock and 75 million common stock warrants at $3.00 per share
  • Expected net proceeds of $211.5 million after underwriting discounts and expenses
  • Proceeds to fund Phase 3 trial of pemvidutide for MASH and general corporate purposes
  • Recent charter amendment increased authorized shares from 200M to 400M
  • Common stock warrants have an exercise price of $3.00 and expire on the earlier of 5 years or 45 days after a successful Phase 3 data readout
  • No established market for the warrants; they will not be listed

Financial Impact

$211.5 million in net proceeds from issuing 64.25 million new shares at $3.00 per share, with potential for additional $225 million if all warrants are exercised

cashdilutionshare count

Risk Factors

  • Significant dilution to existing shareholders from the share issuance
  • Future dilution if warrants are exercised or additional ATM offerings occur
  • Clinical trial risk for pemvidutide in MASH indication
  • No guaranteed market for the warrants, limiting liquidity

Market Snapshot

Exchange
Nasdaq
Sector
Pharmaceutical Preparations

Documents Analyzed

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

DocumentAccession Number
424B5 Filing (Primary)0001104659-26-047979
Document: 0001104659-26-047979-index-headers.html0001104659-26-047979
Document: 0001104659-26-047979-index.html0001104659-26-047979
Document: 0001104659-26-047979.txt0001104659-26-047979
15 reports for ALT
Performance horizon
60% Hit rate 3 of 5 directional calls best @ T+5▲ +9.00%Apr 23, 2026
Filters
Rows
Reports for ALT — sortable, filterable
Type Now
May 28, 2026
17d ago
Press Release
BULLISH ★ 7/10
$3.07 $2.87▼ −6.51%▼ −6.47%$2.61 (−14.98%)
May 27, 2026
18d ago
Press Release
NEUTRAL ★ 2/10
$2.98 $2.90▼ −2.68%▼ −3.89%$2.61 (−12.42%)
May 13, 2026
4w ago
8-K
NEUTRAL ★ 4/10
$3.02 $2.74▼ −9.27%▼ −8.11%$2.61 (−13.58%)
May 13, 2026
4w ago
Press Release
NEUTRAL ★ 5/10
$3.02 $2.74▼ −9.27%▼ −8.11%$2.61 (−13.58%)
May 13, 2026
4w ago
Press Release
BULLISH ★ 6/10
$3.02 $2.74▼ −9.27%▼ −8.11%$2.61 (−13.58%)
May 6, 2026
5w ago
Press Release
NEUTRAL ★ 2/10
$3.26 $3.08▼ −5.52%▼ −6.65%$2.61 (−19.94%)
Apr 24, 2026
7w ago
8-K
NEUTRAL ★ 5/10
$2.80 $3.02▲ +7.86%▲ +7.46%$2.61 (−6.79%)
Apr 24, 2026
7w ago
424B5
NEUTRAL ★ 5/10
$2.85 $2.60▼ −8.77%▼ −9.68%$2.61 (−8.42%)
Apr 23, 2026
7w ago
Press Release
BEARISH ★ 7/10
$2.89 $2.63▲ +9.00%▲ +10.47%$2.61 (+9.69%)
Apr 22, 2026
7w ago
424B5
NEUTRAL ★ 5/10
$2.89 $2.63▼ −9.00%▼ −10.47%$2.61 (−9.69%)
Showing 10 of 15

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