EOSE Eos Energy Enterprises

• $752K bought by 4 insiders
• $13.4M sold by 3 insiders outside a trading plan
• None no planned (10b5-1) sales

1. Insider
   Trade
   Value
   Traded, filed
2. Haiyan Song Director
   Buy
   $59K 15,000 shares at $3.91 New stake
   Traded Sep 11–14 Filed Sep 15
   ↗
3. Marian Walters Director
   Sale
   $275K 30,000 shares at $9.18 16% of stake
   Traded May 28 Filed May 29
   ↗
4. Marian Walters Director
   Sale
   $161K 22,319 shares at $7.20 12% of stake
   Traded May 20 Filed May 22
   ↗
5. Marian Walters Director
   Sale
   $54K 7,681 shares at $7.07 5.4% of stake
   Traded May 19 Filed May 19
   ↗
6. David Urban Director
   Buy
   $100K 16,250 shares at $6.16 +35% to stake
   Traded Mar 9 Filed Mar 10
   ↗
7. Joe Mastrangelo CEO
   Buy
   $157K 23,900 shares at $6.58 +1.6% to stake
   Traded Mar 4 Filed Mar 5
   ↗
8. Alexander Dimitrief Director
   Buy
   $91K 15,000 shares at $6.04 +6.8% to stake
   Traded Mar 2 Filed Mar 4
   ↗
9. Joe Mastrangelo CEO
   Buy
   $345K 60,000 shares at $5.75 +4.3% to stake
   Traded Mar 2 Filed Mar 3
   ↗
10. Russell Monoki Stidolph Director
    Sale
    $11.5M 766,134 shares at $14.97
    Traded Dec 5–8 Filed Dec 8, 2025
    ↗
11. Jeffrey S Bornstein Director
    Sale
    $613K 40,328 shares at $15.19
    Traded Dec 4–5 Filed Dec 8, 2025
    ↗
12. Marian Walters Director
    Sale
    $791K 50,000 shares at $15.81 27% of stake
    Traded Dec 4, 2025 Filed Dec 8, 2025
    ↗

Also filed in the last 12 months, not counted as buying or selling: 43 option exercises, 13 sales to cover taxes, 8 share withholdings for taxes, 4 sales back to the company, 3 gifts, 2 stock grants, and 2 other transactions.