ALT Altimmune

• $370K bought by 6 insiders
• None no sales outside a trading plan
• None no planned (10b5-1) sales

1. Insider
   Trade
   Value
   Traded, filed
2. Jerome Benedict Durso CEO
   Buy
   $44K 15,000 shares at $2.95 +32% to stake
   Traded Aug 13 Filed Aug 13
   ↗
3. John Gill Director
   Buy
   $31K 9,200 shares at $3.41 +74% to stake
   Traded Apr 6 Filed Apr 6
   ↗
4. Jerome Benedict Durso CEO
   Buy
   $47K 15,000 shares at $3.14 +46% to stake
   Traded Apr 1 Filed Apr 1
   ↗
5. Gregory L Weaver CFO
   Buy
   $31K 10,000 shares at $3.15 +36% to stake
   Traded Apr 1 Filed Apr 1
   ↗
6. Jerome Benedict Durso CEO
   Buy
   $71K 20,000 shares at $3.54 +160% to stake
   Traded Mar 6 Filed Mar 9
   ↗
7. Gregory L Weaver CFO
   Buy
   $18K 5,000 shares at $3.54 +22% to stake
   Traded Mar 6 Filed Mar 9
   ↗
8. Wayne Pisano Director
   Buy
   $20K 5,000 shares at $4.08 +59% to stake
   Traded Jan 8 Filed Jan 9
   ↗
9. Catherine A. Sohn Director
   Buy
   $2,118 500 shares at $4.24 +50% to stake
   Traded Jan 5 Filed Jan 5
   ↗
10. Diane Jorkasky Director
    Buy
    $2,003 527 shares at $3.80 New stake
    Traded Dec 29, 2025 Filed Dec 29, 2025
    ↗
11. John Gill Director
    Buy
    $51K 12,500 shares at $4.10 New stake
    Traded Dec 23, 2025 Filed Dec 23, 2025
    ↗
12. Jerome Benedict Durso Director
    Buy
    $52K 12,500 shares at $4.13 New stake
    Traded Dec 22, 2025 Filed Dec 22, 2025
    ↗

Also filed in the last 12 months, not counted as buying or selling: 14 share withholdings for taxes, 14 option exercises, and 5 stock grants.