DESMARAIS MICHAEL J
SEC insider (Form 3/4/5 filer). CIK 0001925959. Chief Human Resources Officer at COSTAR GROUP, INC. (CSGP). 9 reported Form 4/5 transactions since Sep 2024; latest on Mar 15, 2026. Located in ARLINGTON, VA.
Companies DESMARAIS MICHAEL J has filed insider reports for
- COSTAR GROUP, INC. (CSGP): Officer, Chief Human Resources Officer
DESMARAIS MICHAEL J
CIK: 0001925959
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
COSTAR GROUP, INC.
Discretionary Trading P&L
Holdings
Transaction History (9 total)
- Mar 15, 2026CSGP
COSTAR GROUP, INC.
Tax PaymentDirect2.9K shares at avg. $43.63$125K - Mar 10, 2026CSGP
COSTAR GROUP, INC.
AwardDirect17.7K shares- - Mar 1, 2026CSGP
COSTAR GROUP, INC.
Tax PaymentDirect6.4K shares at avg. $44.63$284K - Feb 27, 2026CSGP
COSTAR GROUP, INC.
AwardDirectRestricted Stock Units
17.9K shares- - Mar 15, 2025CSGP
COSTAR GROUP, INC.
Tax PaymentDirect3.6K shares at avg. $78.73$287K - Mar 5, 2025CSGP
COSTAR GROUP, INC.
AwardDirect9K shares- - Mar 1, 2025CSGP
COSTAR GROUP, INC.
Tax PaymentDirect3.9K shares at avg. $76.25$297K - Feb 27, 2025CSGP
COSTAR GROUP, INC.
AwardDirect18.8K shares- - Nov 26, 2024CSGP
COSTAR GROUP, INC.
SaleDirect5.5K shares at avg. $79.88$439K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Mar 15, 2026 | CSGP COSTAR GROUP, INC. | Tax Payment | 2,873 | $43.63 | $125,349 | Direct |
| Mar 10, 2026 | CSGP COSTAR GROUP, INC. | Award | 17,676 | - | $0 | Direct |
| Mar 1, 2026 | CSGP COSTAR GROUP, INC. | Tax Payment | 6,353 | $44.63 | $283,534 | Direct |
| Feb 27, 2026 | CSGP COSTAR GROUP, INC. | Award Restricted Stock Units | 17,926 | - | - | Direct |
| Mar 15, 2025 | CSGP COSTAR GROUP, INC. | Tax Payment | 3,641 | $78.73 | $286,656 | Direct |
| Mar 5, 2025 | CSGP COSTAR GROUP, INC. | Award | 9,026 | - | - | Direct |
| Mar 1, 2025 | CSGP COSTAR GROUP, INC. | Tax Payment | 3,893 | $76.25 | $296,841 | Direct |
| Feb 27, 2025 | CSGP COSTAR GROUP, INC. | Award | 18,828 | - | - | Direct |
| Nov 26, 2024 | CSGP COSTAR GROUP, INC. | Sale | 5,500 | $79.88 | $439,340 | Direct |
1-9 of 9 transactions