MRCY Mercury Systems

• None no insider bought on the open market
• $182M sold by 7 insiders outside a trading plan
• $182K sold by 1 insider under 10b5-1 plans

1. Insider
   Trade
   Value
   Traded, filed
2. Stuart Kupinsky EVP, CLO & Corp Sec
   Planned sale
   $87K 1,000 shares at $86.52 1.6% of stake
   Traded Sep 21 Filed Sep 23
   ↗
3. Steven Ratner EVP, CHRO
   Sale
   $338K 4,000 shares at $84.51 17% of stake
   Traded Sep 3 Filed Sep 8
   ↗
4. William L Ballhaus CEO
   Sale
   $14.1M 160,166 shares at $87.72 31% of stake
   Traded Aug 25–26 Filed Aug 27
   ↗
5. Steven Ratner EVP, CHRO
   Sale
   $33K 356 shares at $91.36 100% of stake
   Traded Aug 21 Filed Aug 25
   ↗
6. Stuart Kupinsky EVP, CLO & Corp Sec
   Planned sale
   $95K 1,000 shares at $95.23 1.7% of stake
   Traded Aug 21 Filed Aug 25
   ↗
7. William L Ballhaus CEO
   Sale
   $15.7M 173,209 shares at $90.59 37% of stake
   Traded Aug 21–24 Filed Aug 25
   ↗
8. Howard L Lance Director
   Sale
   $923K 9,250 shares at $99.76 100% of stake
   Traded May 26 Filed May 27
   ↗
9. Orlando D Carvalho Director
   Sale
   $626K 7,000 shares at $89.36 12% of stake
   Traded May 12 Filed May 13
   ↗
10. Steven Ratner EVP, CHRO
    Sale
    $185K 2,000 shares at $92.46 5.8% of stake
    Traded May 11 Filed May 12
    ↗
11. JANA Partners Management, LP Director
    Sale
    $41.4M 452,057 shares at $91.61
    Traded Mar 2–4 Filed Mar 4
    ↗
12. Howard L Lance Director
    Sale
    $430K 4,832 shares at $88.98 15% of stake
    Traded Feb 25 Filed Feb 27
    ↗
13. JANA Partners Management, LP Director
    Sale
    $32.4M 400,000 shares at $81.00 8.1% of stake
    Traded Feb 9 Filed Feb 11
    ↗
14. Douglas Munro SVP, CAO
    Sale
    $98K 1,329 shares at $73.42 8.3% of stake
    Traded Nov 12, 2025 Filed Nov 13, 2025
    ↗
15. Debora A Plunkett Director
    Sale
    $126K 1,700 shares at $73.99 9.2% of stake
    Traded Nov 7, 2025 Filed Nov 10, 2025
    ↗
16. JANA Partners Management, LP Director
    Sale
    $75.4M 1,000,000 shares at $75.45 17% of stake
    Traded Nov 6, 2025 Filed Nov 10, 2025
    ↗

Also filed in the last 12 months, not counted as buying or selling: 22 sales to cover taxes, 18 stock grants, 5 option exercises, and 4 sales back to the company.