SEC Form 4 · accession 0002146463-26-000005
COSTAR GROUP, INC. · CSGP
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Robin Jack Rossmann
Officer — Chief Financial Officer
Period of report
Jul 31, 2026
Accepted (ET)
Aug 4, 2026 · 5:24 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001057352
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF1,F2 | — | Jul 31, 2026 | A | 34,771 | A | — | — | Common Stock, par value $0.01 per share | 34,771 | 34,771 | D |
Explanation of responses
- F1Each restricted stock unit represents a contingent right to receive one share of CoStar Group, Inc. common stock.
- F2The restricted stock units vest in three equal installments on August 1, 2027, August 1, 2028 and August 1, 2029.