Andrew C. Florance, President and CEO at COSTAR GROUP INC (CSGP), sold 20,000 shares at $62.93 ($1.3M) on 2011-11-04, disclosed to the SEC on 2011-11-07.
Open-market sale of $1.3M CSGP by President and CEO. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
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| CSGP | BUY | 2026-03-02 | $2.5M | — | Filing → |
| CSGP | BUY | 2024-10-28 | $2.2M | — | Filing → |
| CSGP | SELL | 2023-05-02 | $55.4M | — | Filing → |