CoStar Group Inc

CSGPNASDAQ
$29.58
-0.63-2.09%
At close: Aug 5, 5:00 PM EST
$29.76
-0.45-1.49%
Pre-Market: 5:01 AM EST

CoStar Group Ownership & Insider Activity

CoStar Group (CSGP) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 1.5% of shares outstanding. Institutional investors hold 78.3%. Over the past 90 days, insiders made 1 purchase worth $2.5M.

Shares Outstanding

405.198M

Shares Float

402.258M

Insider Shares Owned

6.207M

Insider % Owned

1.5%

Institutional Shares Held

317.470M

Institutional % Held

78.3%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

1

$2.5M total

Sales (90d)

0

Net Activity

Net Buying

Net Value (90d)

$2.5M

CoStar Group Insider Transactions (Last 6 Months)

DateInsiderTitleTypeSharesPriceValue
Aug 4, 2026ANDREW FLORANCEFOUNDER AND CEOBUY83.300K$29.89$2.5M
May 1, 2026ANDREW FLORANCEPRESIDENT AND CEOBUY71.430K$35.20$2.5M

Congressional Trading Activity

DateMemberPartyChamberActionAmount
Apr 14, 2026Gilbert Ray CisnerosDHouseS (Partial)$1,001 - $15,000
Mar 13, 2026Gilbert Ray CisnerosDHouseP$1,001 - $15,000