CoStar Group · Insider Trading

Last 365 days · Open-market buys and sells by officers and directors · Same-day, same-person, same-direction trades combined · Amounts in USD millions← CSGP

Buy

2 · $5.0M

Sell

2 · $0.25M

Net

+$4.8M

By Insider

Name	Title	Buy	Sell	Latest Trade
FLORANCE ANDREW C	Founder and CEO	154,730 shares · $5.0M	—	2026-08-04
Cann Cynthia Cammett	Chief Accounting Officer	—	4,788 shares · $0.15M	2026-08-07
Hill John W	—	—	3,500 shares · $0.11M	2026-08-05

All Trades

Date	Name	Title	Side	Shares	Trades	Avg Price	Value
2026-08-07	Cann Cynthia Cammett	Chief Accounting Officer	Sell	4,788	1	30.78	$0.15M
2026-08-05	Hill John W	Director	Sell	3,500	1	30.21	$0.11M
2026-08-04	FLORANCE ANDREW C	Founder and CEO	Buy	83,300	1	29.89	$2.5M
2026-05-01	FLORANCE ANDREW C	President and CEO	Buy	71,430	2	35.20	$2.5M

Data comes from insiders' SEC ownership filings (Form 4). Only open-market purchases (P) and sales (S) are counted; option exercises, grants, tax withholding and other non-trading changes are excluded.