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CoStar CEO Andrew Florance Buys $2.5 Million in Shares After Stock Declines

Shares of CoStar Group, Inc. (NASDAQ:CSGP) edged higher in early trading on Wednesday after a regulatory filing revealed that founder and CEO Andrew Florance purchased $2.5 million in company stock. The insider buy provided a modest lift to the shares, which have fallen sharply in 2026.
Details of the Purchase
According to the disclosure, Florance acquired 83,300 shares of the real estate analytics firm on August 4, 2026. The transaction was executed at an average price of $29.89 per share.
This purchase increases the CEO's total holdings in CoStar Group to 1,806,165 shares. The market reacted positively to the news, with the stock rising approximately 0.5% in morning trading.
AdContext for Investors
Insider purchases by top executives, particularly founders, are closely watched by investors. Such transactions are often interpreted as a strong vote of confidence in a company's future prospects, suggesting that leadership believes the stock is undervalued.
The move is particularly noteworthy given CoStar's recent performance. The purchase comes after the company's stock has declined 56% year-to-date, signaling the CEO's conviction in the firm's value despite the significant market downturn.
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