| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CSGP | Common Stock, par value $0.01 per share | Award | $0 | +97,600 | +262% | $0.000000 | 134,823 | 20 Feb 2025 | Direct | F1, F2 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CSGP | Option to Acquire Common Stock | Award | $0 | +24,600 | $0.000000 | 24,600 | 20 Feb 2025 | Common Stock | 24,600 | $78.33 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | Includes a grant of 47,200 shares of restricted common stock that vest in three equal installments on March 1, 2026, March 1, 2027 and March 1, 2028, and a grant of 50,400 shares of restricted common stock that vest based upon CoStar Group, Inc.'s achievement of a three-year performance goal. |
| F2 | A historical Form 3 filed on behalf of the Reporting Person underreported the Reporting Person's beneficial ownership by an immaterial amount. The Reporting Person's ownership has been corrected on this Form 4. |
| F3 | The option vests in three equal installments on March 1, 2026, March 1, 2027 and March 1, 2028. |