CoStar Group, Inc. (CSGP) — Insider Activity & Signal

Real Estate · Real Estate - Services · Market cap $12.3B · $30.24 · 52-week range $25.89–$94.95

Recent insider buying

Open-market purchases reported to the SEC (last six months). Option grants and tax-withholding sales are excluded.

Date	Insider	Role	Shares	Price	Value	Source
2026-08-04	FLORANCE ANDREW C	director, officer: Founder and CEO	83,300	$29.89	$2,489,837	SEC Form 4
2026-05-01	FLORANCE ANDREW C	director, officer: President and CEO	3,100	$35.82	$111,042	SEC Form 4
2026-05-01	FLORANCE ANDREW C	director, officer: President and CEO	68,330	$35.17	$2,403,166	SEC Form 4
2026-03-06	Sams Louise S	director	1,000	$48.36	$48,360	SEC Form 4
2026-03-02	Glaser Rachel C	director	1,000	$44.94	$44,940	SEC Form 4
2026-03-02	SAINT FREDERICK G.	officer: President, Marketplaces	20,000	$45.33	$906,600	SEC Form 4
2026-02-27	FLORANCE ANDREW C	director, officer: President and CEO	55,720	$44.52	$2,480,654	SEC Form 4

Financial health

Altman Z-Score 4.10 · Piotroski F-Score 6/9 · Cash $1.7B · Debt $1.1B

ClearOcean signal read

ClearOcean's model currently scores CSGP as a validated signal (8+/10), based on the insider, fundamental and risk data above. This is a factual model output, not advice.

Sources & further reading

Primary filings: SEC EDGAR — CSGP Form 4
How ClearOcean reads insider activity

Last updated August 08, 2026.

ClearOcean is a software research tool, not an investment adviser or broker-dealer. This page aggregates public data (incl. SEC filings) for informational purposes only — it is not investment advice, nor a recommendation, offer or solicitation to buy or sell any security. Past activity does not predict future results. You are solely responsible for your decisions; investing can lose value, up to total loss of capital.