CoStar Group, Inc. (CSGP) Insider Trading Activity — Form 4 Filings
Recent CSGP insider trading activity from SEC Form 4 filings, including executive and director buys, sells, awards, filing dates, and data limitations.
Direct answer: CoStar Group, Inc. (CSGP) has more selling than buying in the recent Form 4 activity available here. The data includes 108 parsed transactions from SEC filings.
SEC data retrieved .
CoStar Group, Inc. insider activity summary
Recent activity includes 8 open-market buys, 66 sells, and other Form 4 transactions. Buy and sell counts summarize the available recent filings; they are not a complete measure of insider conviction.
Cluster-buy signal: at least three open-market purchases occurred within a 14-day window in the available history. This is a screening signal, not a prediction.
Recent Form 4 transactions
| Date | Insider | Type | Reported value |
|---|
| Oct 15, 2026 |
Rossmann Robin Jack |
SELL |
$24,192 |
| Aug 7, 2026 |
Cann Cynthia Cammett |
SELL |
$147,375 |
| Aug 5, 2026 |
Hill John W |
SELL |
$105,735 |
| Aug 4, 2026 |
FLORANCE ANDREW C |
BUY |
$2,489,837 |
| Aug 1, 2026 |
Cann Cynthia Cammett |
SELL |
$30,975 |
| Aug 1, 2026 |
SAINT FREDERICK G. |
SELL |
$41,299 |
| Jul 1, 2026 |
LOWN CHRISTIAN M. |
SELL |
$164,328 |
| Jun 23, 2026 |
Glaser Rachel C |
AWARD |
Not disclosed |
| Jun 23, 2026 |
BERISFORD JOHN L |
AWARD |
Not disclosed |
| Jun 23, 2026 |
Hill John W |
AWARD |
Not disclosed |
| Jun 23, 2026 |
Brunner Angelique G. |
AWARD |
Not disclosed |
| Jun 23, 2026 |
Musslewhite Robert W |
AWARD |
Not disclosed |
Sources and limitations
Source: SEC EDGAR Form 4 filings. Filing data can be delayed, amended, incomplete, or affected by SEC rate limits. Scheduled sales, awards, exercises, and open-market trades have different meanings. This page is informational and is not financial advice.
Frequently asked questions
When was CSGP insider data retrieved?
Nov 2, 2026, 6:26 AM UTC.
Does insider buying guarantee a higher stock price?
No. Insider transactions are one data point and do not predict future returns.
View the full CSGP stock analysis · Search another ticker's Form 4 filings
The information on this page is for educational and informational purposes only and does not constitute professional financial advice.