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Companies
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Latest filing published 24 Jun 2026 for Costar Group, INC.. Read the official filing
Insider track record
Disclosed buys
0
Disclosed sells
0
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Robert W. Musslewhite: trading record in brief
Robert W. Musslewhite is a declared insider at 3 companies (chief executive); the most frequent names are Definitive Healthcare Corp., Costar Group, Inc. and Cardinal Health Inc. In total, 20 filings cover trades dated from 15 September 2021 to 23 June 2026.
None of the filings is a plain purchase or sale on the open market; they cover grants, option exercises and other movements. Because grants and exercises are largely decided by remuneration plans, they are not counted as purchases here.
The record was last updated on 24 June 2026 with a share grant in Costar Group, Inc. Filings reach the SEC (Form 4) feed a median of 3 days after the trade. The legal deadline for a Form 4 is two business days after the transaction. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.
Companies and markets linked to Robert W. Musslewhite
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations20 total
8,262 sharesCommon Stock, par value $0.01 per shareSEC:0001390194-26-000002:0
1,067 shares0Common SharesSEC:0001390194-25-000006:0
3,121 shares0Common Stock, par value $0.01 per shareSEC:0001390194-25-000005:0
1,049 shares0Common SharesSEC:0000721371-25-000029:0
3,293 shares0Common Stock, par value $0.01 per shareSEC:0001057352-24-000112:0
14,207 shares@ US$9.004.7% of flowClass A Common StockSEC:0001209191-24-001241:0
12,656 shares@ US$7.273.5% of flowClass A Common StockSEC:0001209191-23-054609:0
3,532 shares0Common Stock, par value $0.01 per shareSEC:0001057352-23-000136:0
20,016 shares@ US$7.205.5% of flowClass A Common StockSEC:0001209191-23-052546:0
12,657 shares@ US$11.315.2% of flowClass A Common StockSEC:0001209191-23-044996:0
20,016 shares@ US$10.677.8% of flowClass A Common StockSEC:0001209191-23-042016:0
53,587 shares@ US$9.9019.2% of flowClass A Common StockSEC:0001209191-23-027929:0
15,616 shares@ US$10.476.0% of flowClass A Common StockSEC:0001209191-23-023998:0
368,422 shares0Class A Common StockSEC:0001209191-23-011183:0
14,026 shares@ US$10.415.5% of flowClass A Common StockSEC:0001209191-23-002776:0
70,658 shares@ US$14.8242.7% of flowClass A Common StockSEC:0001209191-22-053458:0
3,380 shares0Common Stock, par value $0.01 per shareSEC:0001057352-22-000103:0
333,322 sharesClass A Common StockSEC:0000899243-22-016862:0
650,000 sharesClass A Common StockSEC:0000899243-21-039755:0
2,811 shares@ US$88.95100.0% of flowCommon Stock, par value $0.01 per shareSEC:0001057352-21-000096:0
20 of 20 declarations
