CSGP CoStar Group

• $8.5M bought by 4 insiders
• $534K sold by 2 insiders outside a trading plan
• None no planned (10b5-1) sales

1. Insider
   Trade
   Value
   Traded, filed
2. Cynthia Cammett Cann Chief Accounting Officer
   Sale
   $147K 4,788 shares at $30.78 20% of stake
   Traded Aug 7 Filed Aug 10
   ↗
3. John W Hill Director
   Sale
   $106K 3,500 shares at $30.21 13% of stake
   Traded Aug 5 Filed Aug 10
   ↗
4. Andrew C Florance CEO
   Buy
   $2.5M 83,300 shares at $29.89 +4.8% to stake
   Traded Aug 4 Filed Aug 5
   ↗
5. Andrew C Florance CEO
   Buy
   $2.5M 71,430 shares at $35.20 +4.3% to stake
   Traded May 1 Filed May 4
   ↗
6. Louise S Sams Director
   Buy
   $48K 1,000 shares at $48.36 +5.2% to stake
   Traded Mar 6 Filed Mar 9
   ↗
7. Frederick G. Saint President, Marketplaces
   Buy
   $907K 20,000 shares at $45.33 +7.7% to stake
   Traded Mar 2 Filed Mar 3
   ↗
8. Rachel C Glaser Director
   Buy
   $45K 1,000 shares at $44.94 +32% to stake
   Traded Mar 2 Filed Mar 3
   ↗
9. Andrew C Florance CEO
   Buy
   $2.5M 55,720 shares at $44.52 +3.6% to stake
   Traded Feb 27 Filed Mar 2
   ↗
10. John W Hill Director
    Sale
    $155K 2,250 shares at $68.68 11% of stake
    Traded Nov 13, 2025 Filed Nov 17, 2025
    ↗
11. Cynthia Cammett Cann Chief Accounting Officer
    Sale
    $127K 1,841 shares at $68.79 7.3% of stake
    Traded Nov 13, 2025 Filed Nov 17, 2025
    ↗

Also filed in the last 12 months, not counted as buying or selling: 26 share withholdings for taxes, 12 stock grants, and 4 sales back to the company.