Costar Group Insider Trades

CSGP

Track insider trading activity from Costar Group executives and directors. See which insiders are buying and selling CSGP stock.

Trades Last 12 Months

CSGP Price

All Insider Trades for Costar Group

Sort by: Latest Trade Biggest Holding
Insider
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Rossmann Robin Jack Chief Financial Officer
Holding Value $2.73M 85,935 shares
Last Trade
Oct 15, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$24.2k 756 shares
$32.00
$31.82
Cann Cynthia Cammett Chief Accounting Officer
Holding Value $599k 18,822 shares
Last Trade
Aug 07, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$147k 4,788 shares
$30.78
$31.82
Hill John W Director
Holding Value $732k 22,993 shares
Last Trade
Aug 05, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$106k 3,500 shares
$30.21
$31.82
Florance Andrew C Founder And CEO
Holding Value $57.5M 1,806,165 shares
Last Trade
Aug 04, 2026 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$2.49M 83,300 shares
$29.89
$31.82
Saint Frederick G. President, Marketplaces
Holding Value $8.86M 278,415 shares
Last Trade
Aug 01, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$41.3k 1,436 shares
$28.76
$31.82
Lown Christian M. Chief Financial Officer
Holding Value $4.13M 129,653 shares
Last Trade
Jul 01, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$164k 5,597 shares
$29.36
$31.82
Glaser Rachel C Director
Holding Value $395k 12,419 shares
Last Trade
Jun 23, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$250k 8,262 shares
$30.26
$31.82
Berisford John L Director
Holding Value $357k 11,235 shares
Last Trade
Jun 23, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$250k 8,262 shares
$30.26
$31.82
Holding Value $369k 11,585 shares
Last Trade
Jun 23, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$250k 8,262 shares
$30.26
$31.82
Holding Value $586k 18,428 shares
Last Trade
Jun 23, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$250k 8,262 shares
$30.26
$31.82
Sams Louise S Director
Holding Value $912k 28,671 shares
Last Trade
Jun 23, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$250k 8,262 shares
$30.26
$31.82
Holding Value $844k 26,539 shares
Last Trade
Jun 23, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$250k 8,262 shares
$30.26
$31.82
Florance Andrew C President And CEO
Holding Value $54.8M 1,722,865 shares
Last Trade
May 01, 2026 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$111k 3,100 shares
$35.82
$31.82
Ruggles Lisa Senior Vp, Global Operations
Holding Value $5.57M 174,915 shares
Last Trade
Mar 15, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$130k 2,977 shares
$43.63
$31.82
Desmarais Michael J Chief Human Resources Officer
Holding Value $2.79M 87,725 shares
Last Trade
Mar 15, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$125k 2,873 shares
$43.63
$31.82
Boxer Gene General Counsel And Secretary
Holding Value $3.04M 95,463 shares
Last Trade
Mar 15, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$39.7k 910 shares
$43.63
$31.82
Simuro Frank Chief Technology Officer
Holding Value $13.2M 414,491 shares
Last Trade
Mar 15, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$485k 11,107 shares
$43.63
$31.82
Lown Christian M. Chief Financial Officer
Holding Value $4.3M 135,250 shares
Last Trade
Mar 10, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$568k 12,268 shares
$46.34
$31.82
Saint Frederick G. President, Marketplaces
Holding Value $8.9M 279,851 shares
Last Trade
Mar 02, 2026 Purchase (Open Market)Shares bought on the open market or in a private purchase outside of a company compensation plan.
$907k 20,000 shares
$45.33
$31.82
Berisford John L Director
Holding Value $94.6k 2,973 shares
Last Trade
Sep 09, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$262k 2,973 shares
$88.14
$31.82

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