Key facts
- This page summarizes Christian M. Lown's Form 4 filing for COSTAR GROUP, INC. (CSGP).
- 1 reported transaction and 0 derivative rows are listed below.
- Accepted by SEC: 06 Jul 2026, 16:05.
Christian M. Lown - 01 Jul 2026 Form 4 Insider Report for COSTAR GROUP, INC. (CSGP)
- Reporting relationship
- Chief Financial Officer
- Issuer ticker
- CSGP
- Reported as of
- 01 Jul 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 06 Jul 2026, 16:05:32 UTC
- Prior SEC filing
- 11 Mar 2026
- Next SEC filing
- 13 Aug 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Lisa M. Tanzi, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Christian M. Lown filed Form 4 for COSTAR GROUP, INC. (CSGP) on 06 Jul 2026.
Change
- Previous filing in this sequence was filed on 11 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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001701994
Primary reporting owner
LOWN CHRISTIAN M.
- Relationship
- Chief Financial Officer
- Address
- C/O COSTAR GROUP, INC., 1201 WILSON BLVD., ARLINGTON
- Signature
- /s/ Lisa M. Tanzi, Attorney-in-Fact
- Signature date
- 06 Jul 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
- -5,597
- Change %
- -4.1%
- Price
- $29.36*
- Shares after
- 129,653
- Date
- 01 Jul 2026
- Ownership
- Direct
* marks a reported price that did not pass the local price check.