Andrew C Florance, Founder and CEO at Costar, bought CSGP on Aug 4, 2026

Data as of Oct 16

▲ BUY$2.5M83,300 shares at $29.89Andrew C Florance Founder and CEOCSGP Costar Group, Inc.

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Traded: Aug 4, 2026
Disclosed: Aug 5, 2026
Filed: 1 day after the trade

Form 4s are due within two business days.

Official filing (SEC Form 4) ↗

The price around the disclosure

CSGPSimilar stocks (XLRE — its sector index fund), rebased to CSGP's price on the disclosure day

CSGP since disclosure

+7.0%

Similar stocks (XLRE) since disclosure

−6.7%

XLRE — its sector index fund

Change in closing price from Aug 5, 2026 (the first trading day on or after disclosure) to Oct 16, 2026. Dividends excluded. Not a return anyone earned.

Our take

None of our tested rules fired on this trade.

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