Form 4: CoStar Group Chief Accounting Officer Sells Shares Under Pre-Arranged Plan

CoStar Group's Chief Accounting Officer, Cynthia Cammett Cann, reported the sale of 2,033 shares of common stock at $92.85 per share, executed under a Rule 10b5-1 trading plan.

Summary

• Cynthia Cammett Cann, Chief Accounting Officer of CoStar Group, Inc. (CSGP), reported the disposition of 2,033 shares of common stock.
• The transaction occurred on July 28, 2025, with shares sold at a price of $92.85 per share.
• The sale was conducted pursuant to a Rule 10b5-1(c) contract, instruction, or written plan, indicating a pre-arranged trading strategy.
• Following this transaction, Ms. Cann beneficially owns 25,771 shares of CoStar Group common stock directly.

Sentiment

Score: 5

Explanation: The filing reports a routine insider stock sale by a Chief Accounting Officer, executed under a pre-arranged 10b5-1 plan. This type of transaction is generally considered neutral as it often reflects personal financial planning rather than a change in company outlook.

Negatives

• An insider sale, even under a pre-arranged plan, can sometimes be perceived as a lack of confidence, though this is often mitigated by the existence of a 10b5-1 plan.

Future Outlook

NA

Industry Context

This filing reports a routine insider transaction for CoStar Group, a leading provider of commercial real estate information, analytics, and online marketplaces. Such transactions are common for executives managing personal finances and are often executed under pre-arranged trading plans.

Stakeholder Impact

• Shareholders: The sale represents a minor dilution of outstanding shares and is a routine disclosure. The impact on share price is expected to be negligible given the small volume relative to the company's market capitalization and the nature of the transaction (10b5-1 plan).

Key Dates

Keywords

CoStar Group, CSGP, Insider Trading, Form 4, Stock Sale, Officer Transaction, Cynthia Cammett Cann, Chief Accounting Officer, Rule 10b5-1