Insider at

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Insider transactions

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1 buys (P) 0 sells (S) Net: $906,600 + 41 non-open-market transactions below Avg return of open purchases vs now: -39.0% last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

41 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
March 2, 2026 CSGP P 20,000 $45.33 $906,600 279,851 Direct +7.70% Acquired -39.0% (price as of 2026-10-05)
Aug. 28, 2025 CSGP S 25,000 $90.33 $2,258,250 293,103 Direct -7.86% Disposed -69.4% (price as of 2026-10-05)
July 28, 2025 CSGP S 25,000 $93.23 $2,330,750 319,539 Direct -7.26% Disposed -70.3% (price as of 2026-10-05)
June 11, 2025 CSGP S 25,000 $81.10 $2,027,500 344,539 Direct -6.77% Disposed -65.9% (price as of 2026-10-05)
May 16, 2024 CSGP S 2,500 $88.43 $221,075 282,856 Direct -0.88% Disposed -68.7% (price as of 2026-10-05)
June 7, 2023 CSGP S 30,000 $80.24 $2,407,200 237,887 Direct -11.20% Disposed -65.5% (price as of 2026-10-05)
March 23, 2021 CSGP S 7,834 $831.70 $6,515,538 24,157 Direct -24.49% Disposed -66.7% (price as of 2026-10-05)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

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DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Feb. 27, 2026 CSGP Restricted Stock Units Common Stock, par value $0.01 per share (39,652) · · 39,652 Acquired
Feb. 20, 2025 CSGP Option to Acquire Common Stock Common Stock (24,600) $78.33 Feb. 19, 2035 24,600 Acquired
Feb. 22, 2024 CSGP Option to Acquire Common Stock Common Stock (17,000) $82.47 Feb. 21, 2034 17,000 Acquired
Feb. 14, 2023 CSGP Option to Acquire Common Stock Common Stock (12,300) $76.78 Feb. 13, 2033 12,300 Acquired
Feb. 16, 2022 CSGP Option to Acquire Common Stock Common Stock (22,600) $67.29 Feb. 15, 2032 22,600 Acquired
March 23, 2021 CSGP Option to Acquire Common Stock Common Stock (5,067) $342.13 Feb. 27, 2028 5,067 Disposed
March 23, 2021 CSGP Option to Acquire Common Stock Common Stock (2,767) $204.91 March 1, 2027 2,767 Disposed
Feb. 18, 2021 CSGP Option to Acquire Common Stock Common Stock (1,900) $919.83 Feb. 17, 2031 1,900 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 5 holdings

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Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
Oct. 5, 2020 CSGP Common Stock, par value $0.01 per share · Direct
Oct. 5, 2020 CSGP Option to Acquire Common Stock→ Common Stock (2,767) 2,767 Direct
Oct. 5, 2020 CSGP Option to Acquire Common Stock→ Common Stock (5,067) 5,067 Direct
Oct. 5, 2020 CSGP Option to Acquire Common Stock→ Common Stock (4,500) 4,500 Direct
Oct. 5, 2020 CSGP Option to Acquire Common Stock→ Common Stock (3,300) 3,300 Direct

Compensation (DEF 14A)

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Matched by name from proxy statements (DEF 14A) — verify against the filing.

CSGP

President, Marketplaces
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2024 $571,154 · $6,703,685 $536,690 $1,000,500 · $151,326 $8,963,355
2023 $546,985 · $3,671,620 $355,101 $794,750 · $17,590 $5,386,046
2022 $527,262 · $2,997,097 $461,718 $721,344 · $16,322 $4,723,743

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.