Summary
Updated Aug 31, 2026
John W. Hill is Director of COSTAR GROUP, INC. (CSGP). 5 SEC Form 4 filings on record going back to 2024, most recently on 10 August 2026. Most recent open-market trade: sold $106K of CSGP on 10 August 2026. Lifetime open-market sales: $470K.
Recent Transactions
6Every recent SEC Form 4 transaction John W. Hill has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies John W. Hill files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Andrew C. Florance - $7.48M of CSGP open-market activity in the last 12 months
- Frederick G. Saint - $907K of CSGP open-market activity in the last 12 months
- Cynthia Cammett Cann - $274K of CSGP open-market activity in the last 12 months
- Louise S. Sams - $48K of CSGP open-market activity in the last 12 months
- Rachel C. Glaser - $45K of CSGP open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is John W. Hill?
John W. Hill is a corporate insider, tracked as Director of COSTAR GROUP, INC. (CSGP). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has John W. Hill submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has John W. Hill been buying or selling stock?
Recorded transactions: 0 open-market purchases and 3 open-market sales ($470K) across all tracked filings.
Where can I see all of John W. Hill's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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