SIMURO FRANK 4
4 · COSTAR GROUP, INC. · Filed Mar 3, 2026
Insider Transaction Report
Form 4
SIMURO FRANK
Chief Technology Officer
Transactions
- Tax Payment
Common Stock, par value $0.01 per share
[F1]2026-03-01$44.63/sh−18,702$834,670→ 425,598 total - Award
Restricted Stock Units
[F2][F3]2026-02-27+52,869→ 52,869 total→ Common Stock, par value $0.01 per share (52,869 underlying)
Footnotes (3)
- [F1]On February 27, 2026, the last preceding business day, the closing price of the Company's common stock on Nasdaq was $44.63.
- [F2]Each restricted stock unit represents a contingent right to receive one share of CoStar Group, Inc. common stock.
- [F3]The restricted stock units vest in three equal installments on March 1, 2027, March 1, 2028 and March 1, 2029.
Signature
/s/ Gene Boxer, Attorney-in-Fact|2026-03-03