COSTAR GROUP, INC. reports

Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Arlington, VA
SEC filing record 1 source field available
Fiscal year end
31 December
COSTAR GROUP, INC. has filed 1,528 SEC EDGAR filings since 13 Mar 1998

SEC filing history

Showing 1-25 of 1,000 matching filings.

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1
4

FORM 4

Filing date
06 Jul 2026
Reporting date
01 Jul 2026
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4

FORM 4

Filing date
24 Jun 2026
Reporting date
23 Jun 2026
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4

FORM 4

Filing date
24 Jun 2026
Reporting date
23 Jun 2026
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4

FORM 4

Filing date
24 Jun 2026
Reporting date
23 Jun 2026
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4

FORM 4

Filing date
24 Jun 2026
Reporting date
23 Jun 2026
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4

FORM 4

Filing date
24 Jun 2026
Reporting date
23 Jun 2026
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4

FORM 4

Filing date
24 Jun 2026
Reporting date
23 Jun 2026
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4

FORM 4

Filing date
24 Jun 2026
Reporting date
23 Jun 2026
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4

FORM 4

Filing date
16 Jun 2026
Reporting date
15 Jun 2026
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SD File 000-24531

SD

Filing date
20 May 2026
Reporting date
Not listed
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DEFA14A File 000-24531

DEFA14A

Filing date
18 May 2026
Reporting date
Not listed
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4

FORM 4

Filing date
04 May 2026
Reporting date
01 May 2026
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ARS File 000-24531

ARS

Filing date
30 Apr 2026
Reporting date
31 Dec 2025
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DEFA14A File 000-24531

DEFA14A

Filing date
30 Apr 2026
Reporting date
Not listed
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DEF 14A File 000-24531

DEF 14A

Filing date
30 Apr 2026
Reporting date
23 Jun 2026
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SCHEDULE 13G File 005-54369

SCHEDULE 13G filing

Filing date
29 Apr 2026
Reporting date
Not listed
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SCHEDULE 13G File 005-54369

SCHEDULE 13G filing

Filing date
29 Apr 2026
Reporting date
Not listed
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8-K File 000-24531

8-K

Filing date
28 Apr 2026
Reporting date
28 Apr 2026
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3/A

FORM 3/A

Filing date
02 Apr 2026
Reporting date
25 Mar 2025
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SCHEDULE 13G/A File 005-54369

SCHEDULE 13G/A filing

Filing date
26 Mar 2026
Reporting date
Not listed
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4/A

FORM 4/A

Filing date
17 Mar 2026
Reporting date
15 Mar 2026
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4

FORM 4

Filing date
17 Mar 2026
Reporting date
15 Mar 2026
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