Insiders who reported open-market trades in the last 12 months at the companies Andrew C. Florance 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.
Frederick G. Saint - $907K in CSGP purchases and sales in the last 12 months
Andrew C. Florance is a corporate insider, tracked as Founder and CEO, Director of COSTAR GROUP, INC. (CSGP). InsiderAlpha holds 8 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 Andrew C. Florance submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Andrew C. Florance been buying or selling stock?
Recorded transactions: 5 open-market purchases ($8.58M) and 0 open-market sales across all tracked filings.
Andrew C. Florance is Founder and CEO, Director of COSTAR GROUP, INC. (CSGP). 8 SEC Form 4 filings on record going back to 2024, most recently on 5 August 2026. Most recent open-market trade: bought $2.49M of CSGP on 5 August 2026. Lifetime open-market purchases: $8.58M.
Recent transactions
10
The latest 10 SEC Form 4 transactions reported by Andrew C. Florance.
InsiderAlpha's records for Andrew C. Florance go back to 2024: 8 primary Form 4 filings, an average of 2.7 per year. The typical open-market purchase is $1.72M (5 buys totaling $8.58M). The largest single buy on record is $2.49M of CSGP in 2026. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
