Frank Simuro - 15 Mar 2026 Form 4 Insider Report for COSTAR GROUP, INC. (CSGP)

Reporting relationship
Chief Technology Officer
Issuer ticker
CSGP
Reported as of
15 Mar 2026
Net transaction value
$0
Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
4
Accepted by SEC
17 Mar 2026, 16:12:32 UTC
Prior SEC filing
03 Mar 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Gene Boxer, Attorney-in-Fact

Key filing fact

Frank Simuro filed Form 4 for COSTAR GROUP, INC. (CSGP) on 17 Mar 2026.

Key facts

  • This page summarizes Frank Simuro's Form 4 filing for COSTAR GROUP, INC. (CSGP).
  • 1 reported transaction and 0 derivative rows are listed below.
  • Accepted by SEC: 17 Mar 2026, 16:12.

Change

  • Previous filing in this sequence was filed on 03 Mar 2026.
  • Current net transaction value: $0.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001925960 Primary reporting owner

SIMURO FRANK

Relationship
Chief Technology Officer
Address
C/O COSTAR GROUP, INC., 1201 WILSON BLVD., ARLINGTON
Signature
/s/ Gene Boxer, Attorney-in-Fact
Signature date
17 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CSGP transaction

Common Stock, par value $0.01 per share

Tax liability

Transaction value
Shares
-11,107
Change %
-2.6%
Price
$43.63*
Shares after
414,491
Date
15 Mar 2026
Ownership
Direct
Footnotes
F1
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

On March 13, 2026, the last preceding business day, the closing price of the Company's common stock on Nasdaq was $43.63.

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