CoStar (CSGP) Chief Accounting Officer Cynthia Cann Sells 4,788 Shares

What Happened
Cynthia Cann (listed as Cann, Cynthia Cammett), CoStar Group's Chief Accounting Officer, sold 4,788 shares in an open-market sale on 2026-08-07 at $30.78 per share, for proceeds of approximately $147,375. This was a sale (transaction code S), which is often routine insider selling and not necessarily a signal about company prospects.

Key Details

• Transaction date and price: 2026-08-07 — 4,788 shares sold at $30.78 each.
• Total proceeds: ~$147,375.
• Shares owned after transaction: Not specified in the information provided in this summary.
• Footnotes/plans: No 10b5-1 plan, tax-withholding, or other footnotes were indicated in the provided transaction details.
• Filing date and timeliness: Form 4 was filed on 2026-08-10 reporting the Aug 7 transaction; this filing appears to be within the typical SEC reporting window.

Context
Sales by corporate officers are common and can reflect many reasons (diversification, liquidity, planned sales) unrelated to company performance. Because this transaction is a straightforward open-market sale (not an option exercise, gift, or award), it does not, by itself, imply insider sentiment. For a fuller picture, investors may track subsequent insider trades, total insider holdings, and company fundamentals.