COSTAR GROUP, INC. (CSGP)
Data as of , from SEC Form 4 filings.
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- Cynthia Cammett Cann - OfficerOpen-market sale$147K
John W. Hill - DirectorOpen-market sale$106K
About COSTAR GROUP, INC. (CSGP)
COSTAR GROUP, INC. is an SEC registrant, filing under CIK 0001057352, classified as business services, nec. It is grouped with Information Technology companies on this site.
CSGP Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 1 | 83,300 | $2.49M |
| Open-market sale | 2 | 8,288 | $253K |
| Grant or award | 2 | 60,849 | |
CSGP insider transactions (Form 4)
1270 Form 4 filings on record, the earliest from Oct 28, 2024, newest first. Filing history page 3 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
 Christian M. Lown - Officer | Tax withholding / forfeiture | Common Stock, par value $0.01 per share | 4,666 | $80.40 | $375K | |
| Cynthia Cammett Cann - Officer | Tax withholding / forfeiture | Common Stock, par value $0.01 per share | 461 | $81.16 | $37K | |
| Frederick G. Saint - Officer | Open-market sale | Common Stock, par value $0.01 per share | 25,000 | $81.10 | $2.03M | |
| Lisa Ruggles - Officer | Tax withholding / forfeiture | Common Stock, par value $0.01 per share | 12 | $73.56 | $883 | |
| John W. Hill - Director | Open-market sale | Common Stock, par value $0.01 per share | 2,735 | $76.76 | $210K | |
| John W. Hill - Director | Gift | Common Stock, par value $0.01 per share | 195 | $0.00 | - | |
| Michael R. Klein - Director | Gift | Common Stock, par value $0.01 per share | 64,909 | $0.00 | - | |
 Christopher J. Nassetta - Director | Open-market sale | Common Stock, par value $0.01 per share | 1,681 | $80.39 | $135K | |
| Michael J. Desmarais - Officer | Open-market sale | Common Stock, par value $0.01 per share | 5,500 | $79.88 | $439K | |
| Andrew C. Florance - Officer | Open-market purchase | Common Stock, par value $0.01 per share | 14,731 | $74.67 | $1.10M | |
| Michael R. Klein - Director | Gift | Common Stock, par value $0.01 per share | 5,872 | $0.00 | - | |
| Michael R. Klein - Director | Open-market sale | Common Stock, par value $0.01 per share | 71,633 | $74.69 | $5.35M |
Recent CSGP Form 144 notices of proposed sale
1An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Hill John W | Director | 3,500 | $106K | View on EDGAR |
Stock trades in CSGP disclosed by members of the U.S. House in the last 12 months, newest first. Values are the ranges as filed.
| Member | Type | Traded | Disclosed | Value range | Owner | Days to disclose | Filing |
|---|---|---|---|---|---|---|---|
 Gilbert Ray Cisneros, Jr.Democrat, CA-31 | Purchase |
CSGP insider trading FAQ
What is the latest insider trade for CSGP?
COSTAR GROUP, INC. (CSGP) had 6 insider filings in the last 90 days, with the most recent on 2026-08-10. The full record for CSGP runs to 70 Form 4 filings, the earliest from 2024-10-28. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying CSGP stock?
1 insider purchase of CSGP was filed in the last 90 days, totaling $2.49M.
How many insiders are selling CSGP stock?
2 insider sales of CSGP were filed in the last 90 days, totaling $253K.
Where can I see CSGP SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects CSGP Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Information Technology companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Cynthia Cammett Cann view on EDGAR
- - John W. Hill view on EDGAR
- - Andrew C. Florance view on EDGAR
- - Robin Jack Rossmann view on EDGAR
- - Cynthia Cammett Cann view on EDGAR
- - Frederick G. Saint view on EDGAR
- - Christian M. Lown view on EDGAR
- - Rachel C. Glaser view on EDGAR
- - John L. Berisford view on EDGAR
Related companies with recent insider activity
Learn more
- How to read insider buying signals
- What an open-market purchase by an insider can and cannot tell you.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Information Technology
- Where CSGP's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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- Every CSGP Form 4 filing on record
- Up to 3 months of CSGP price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
