Feeds › Insider trades
Insider trades
Open-market buys and sells by officers, directors and 10% owners, from SEC Form 4. Usually filed within two business days.
About this data
- What it is
- When a company's officers, directors or owners of more than 10% buy or sell its stock, they must report the trade to the SEC on Form 4. This feed shows purchases and sales on the open market; stock grants, option exercises and shares withheld for tax are left out.
- Who files it
- The insider, usually through the company, within two business days of the trade.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- Sales are often routine: insiders sell to diversify, to pay taxes, or under a 10b5-1 plan set up months in advance. A purchase with their own money is less common, which is why many investors pay closer attention to it.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Open-market trades per day, last 30 days
Purchases Sales
By trade date. Insiders have two business days to file, so the most recent days fill in later.
Latest open-market insider trades
Showing: ticker CSGP
| Traded | Insider | Company | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Nov 12, 2026 | John W. Hill Director | CSGP CoStar Group, Inc. | Sale | 3,050 | $30.18 | $92.0K Sale | Form 4 ↗ |
| Aug 7, 2026 | Cynthia Cammett Cann Chief Accounting Officer | CSGP CoStar Group, Inc. | Sale | 4,788 | $30.78 | $147.4K Sale | Form 4 ↗ |
| Aug 5, 2026 | John W. Hill Director | CSGP CoStar Group, Inc. | Sale | 3,500 | $30.21 | $105.7K Sale | Form 4 ↗ |
| Aug 4, 2026 | Andrew C. Florance Founder and CEO, Director | CSGP CoStar Group, Inc. | Buy | 83,300 | $29.89 | $2.5M Buy | Form 4 ↗ |
| May 1, 2026 | Andrew C. Florance President and CEO, Director | CSGP CoStar Group, Inc. | Buy | 3,100 | $35.82 | $111.0K Buy | Form 4 ↗ |
| May 1, 2026 | Andrew C. Florance President and CEO, Director | CSGP CoStar Group, Inc. | Buy | 68,330 | $35.17 | $2.4M Buy | Form 4 ↗ |
| Mar 6, 2026 | Louise S. Sams Director | CSGP CoStar Group, Inc. | Buy | 1,000 | $48.36 | $48.4K Buy | Form 4 ↗ |
| Mar 2, 2026 | Frederick G. Saint President, Marketplaces | CSGP CoStar Group, Inc. | Buy | 20,000 | $45.33 | $906.6K Buy | Form 4 ↗ |
| Mar 2, 2026 | Rachel C. Glaser Director | CSGP CoStar Group, Inc. | Buy | 1,000 | $44.94 | $44.9K Buy | Form 4 ↗ |
| Feb 27, 2026 | Andrew C. Florance President and CEO, Director | CSGP CoStar Group, Inc. | Buy | 55,720 | $44.52 | $2.5M Buy | Form 4 ↗ |
| Nov 13, 2025 | John W. Hill Director | CSGP CoStar Group, Inc. | Sale | 2,250 | $68.68 | $154.5K Sale | Form 4 ↗ |
| Nov 13, 2025 | Cynthia Cammett Cann Chief Accounting Officer | CSGP CoStar Group, Inc. | Sale | 1,841 | $68.79 | $126.6K Sale | Form 4 ↗ |
| Aug 28, 2025 | Frederick G. Saint President, Marketplaces | CSGP CoStar Group, Inc. | Sale | 25,000 | $90.33 | $2.3M Sale | Form 4 ↗ |
| Jul 28, 2025 | Frederick G. Saint President, Marketplaces | CSGP CoStar Group, Inc. | Sale | 25,000 | $93.23 | $2.3M Sale | Form 4 ↗ |
| Jul 28, 2025 | Cynthia Cammett Cann Chief Accounting Officer | CSGP CoStar Group, Inc. | Sale | 2,033 | $92.85 | $188.8K Sale | Form 4 ↗ |
| Jun 11, 2025 | Frederick G. Saint President, Marketplaces | CSGP CoStar Group, Inc. | Sale | 25,000 | $81.10 | $2.0M Sale | Form 4 ↗ |
| Mar 10, 2025 | Cynthia Cammett Cann Chief Accounting Officer | CSGP CoStar Group, Inc. | Sale | 1,749 | $79.90 | $139.7K Sale | Form 4 ↗ |
| Dec 10, 2024 | John W. Hill Director | CSGP CoStar Group, Inc. | Sale | 2,735 | $76.76 | $209.9K Sale | Form 4 ↗ |
| Nov 27, 2024 | Christopher J. Nassetta Director | CSGP CoStar Group, Inc. | Sale | 1,681 | $80.39 | $135.1K Sale | Form 4 ↗ |
| Nov 26, 2024 | Michael J. Desmarais Chief Human Resources Officer | CSGP CoStar Group, Inc. | Sale | 5,500 | $79.88 | $439.3K Sale | Form 4 ↗ |
| Nov 11, 2024 | Cynthia Cammett Cann Chief Accounting Officer | CSGP CoStar Group, Inc. | Sale | 1,310 | $76.85 | $100.7K Sale | Form 4 ↗ |
| Oct 25, 2024 | Michael R. Klein Director | CSGP CoStar Group, Inc. | Sale | 71,633 | $74.69 | $5.4M Sale | Form 4 ↗ |
| Oct 25, 2024 | Andrew C. Florance President and CEO, Director | CSGP CoStar Group, Inc. | Buy | 14,731 | $74.67 | $1.1M Buy | Form 4 ↗ |
| Jul 31, 2024 | Cynthia Cammett Cann Chief Accounting Officer | CSGP CoStar Group, Inc. | Sale | 1,200 | $78.20 | $93.8K Sale | Form 4 ↗ |
24 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 4:43 PM EST.
Download CSV The rows of this feed, with the filters above. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.
Other feeds: Congressional trades · Executive-branch trades · Bills in Congress · Roll-call votes · Corporate PAC donations · Lobbying · Capitol Hires · Lobbying and contracts · Government contracts · Planned insider sales · Executive pay · Ownership stakes (13D / 13G) · Institutional holdings (13F) · Short interest · Fails to deliver · Daily short volume · Wikipedia page views · App store ratings · H-1B visa applications · Stock splits · 8-K events · IPO filings · Deals · Private placements (Form D) · Merger clearances (HSR) · Layoff notices (WARN) · SEC enforcement · Patents · Clinical trial updates · FDA approvals and clearances