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CSGPCoStar Group

Robert Musslewhite

Director at CoStar Group, as of Jun 24, 2026No sales or purchases in the past 12 months.

Updated Oct 15, 2026 from SEC filings · covers Oct 16, 2025 to Oct 15, 2026
27K
shares held after the latest filing, CoStar Group
Vested shares reported on Forms 3, 4 and 5 only. Not the insider's whole wealth.
2
companies filed for

Last filing: Jun 24, 2026.

Pattern

What the filings show, past 12 months. Nothing here rates or predicts.

Roles from filings

Every company we track where this person has filed, newest filing first.

CompanyTitleFirst filingLatest filing
CoStar Group (CSGP)DirectorDec 23, 2019Jun 24, 2026
Cardinal Health (CAH)DirectorMar 11, 2025Nov 6, 2025

Also a director at

Cardinal Health (CAH)

Recent filings

The last 2 days with transactions, newest first, one line per trade date. Each number links to an SEC filing.

This page shows only what this person reported on SEC ownership filings. See the methodology. Spotted something wrong? Report an error.