Institutional Ownership
Costar Group Inc
CUSIP 22160N109COMCSGPQ1 2026
Insider Transactions
62
Form 4 lines on record
Reporting Insiders
15
Distinct officers & directors
90d Buys
0
Open-market purchase shares
90d Sells
0
Open-market sale shares
Insider Transactions — Form 4
62 reported transactions
| # | Date | Insider | Title | Type | Shares | Price | Value | Held After | Filing |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Jul 1, 2026 | Lown Christian M. | Chief Financial Officer | F · Tax | 5.6K | $29.36 | $164.3K | 129.7K | SEC |
| 2 | Jun 23, 2026 | Sams Louise S | Director | A · Grant | 8.3K | — | — | 28.7K | SEC |
| 3 | Jun 23, 2026 | Brunner Angelique G. | Director | A · Grant | 8.3K | — | — | 18.4K | SEC |
| 4 | Jun 23, 2026 | Mccarthy Christine M | Director | A · Grant | 8.3K | — | — | 11.6K | SEC |
| 5 | Jun 23, 2026 | Glaser Rachel C | Director | A · Grant | 8.3K | — | — | 12.4K | SEC |
| 6 | Jun 23, 2026 | Berisford John L | Director | A · Grant | 8.3K | — | — | 11.2K | SEC |
| 7 | Jun 23, 2026 | Musslewhite Robert W | Director | A · Grant | 8.3K | — | — | 26.5K | SEC |
| 8 | Jun 23, 2026 | Hill John W | Director | A · Grant | 8.3K | — | — | 26.5K | SEC |
| 9 | Jun 15, 2026 | Cann Cynthia Cammett | Chief Accounting Officer | F · Tax | 461 | $32.04 | $14.8K | 24.7K | SEC |
| 10 | May 1, 2026 | Florance Andrew C | President and CEO | P · Buy | 68.3K | $35.17 | $2.40M | 1.72M | SEC |
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