FIBK First Interstate BancSystem

• None no insider bought on the open market
• $8.2M sold by 4 insiders outside a trading plan
• None no planned (10b5-1) sales

1. Insider
   Trade
   Value
   Traded, filed
2. Julie A Scott 10% owner, +4 joint filers
   Sale
   $102K 2,700 shares at $37.64 0.6% of stake
   Traded Sep 16 Filed Sep 16
   ↗
3. Jonathan R Scott 10% owner, +5 joint filers
   Sale
   $301K 8,071 shares at $37.29 1% of stake
   Traded Sep 14 Filed Sep 14
   ↗
4. Jonathan R Scott 10% owner, +5 joint filers
   Sale
   $627K 16,929 shares at $37.03 2% of stake
   Traded Sep 11 Filed Sep 14
   ↗
5. Jonathan R Scott 10% owner, +5 joint filers
   Sale
   $403K 10,000 shares at $40.30 1.2% of stake
   Traded Jul 16 Filed Jul 16
   ↗
6. Julie A Scott 10% owner, +4 joint filers
   Sale
   $540K 15,000 shares at $35.97 3% of stake
   Traded Jun 18 Filed Jun 18
   ↗
7. Jonathan R Scott 10% owner, +5 joint filers
   Sale
   $339K 9,390 shares at $36.11 1.1% of stake
   Traded Jun 18 Filed Jun 18
   ↗
8. Jonathan R Scott 10% owner, +5 joint filers
   Sale
   $163K 4,500 shares at $36.29 0.5% of stake
   Traded Jun 17 Filed Jun 18
   ↗
9. Jonathan R Scott 10% owner, +5 joint filers
   Sale
   $459K 12,892 shares at $35.58 1.5% of stake
   Traded Jun 4 Filed Jun 4
   ↗
10. Jonathan R Scott 10% owner, +5 joint filers
    Sale
    $1.9M 53,504 shares at $35.42 5.7% of stake
    Traded Apr 30 Filed May 1
    ↗
11. Jonathan R Scott 10% owner, +5 joint filers
    Sale
    $100K 3,000 shares at $33.45 0.3% of stake
    Traded Mar 26 Filed Mar 27
    ↗
12. Jonathan R Scott 10% owner, +5 joint filers
    Sale
    $182K 5,000 shares at $36.46 0.5% of stake
    Traded Jan 5–6 Filed Jan 6
    ↗
13. Susan Scott Heyneman Trust, Susan Heyneman & First Interstate Wealth Management Co-Trustees 10% owner
    Sale
    $328K 10,000 shares at $32.75 4.3% of stake
    Traded Dec 1, 2025 Filed Dec 1, 2025
    ↗
14. John M Heyneman Jr. Director, +4 joint filers
    Sale
    $944K 30,432 shares at $31.03 2.1% of stake
    Traded Nov 21, 2025 Filed Nov 25, 2025
    ↗
15. John M Heyneman Jr. Director
    Sale
    $1.1M 35,000 shares at $32.09 54% of stake
    Traded Nov 10–11 Filed Nov 12, 2025
    ↗
16. Jonathan R Scott 10% owner, +5 joint filers
    Sale
    $150K 4,800 shares at $31.27 0.5% of stake
    Traded Nov 3, 2025 Filed Nov 3, 2025
    ↗

Also filed in the last 12 months, not counted as buying or selling: 27 stock grants, 10 gifts, and 6 share withholdings for taxes.