GB
George Bickerstaff (Director) filed 1 Form 4 report in the trailing twelve months (0 purchases, 1 sale), most often in CareDx, Inc. (CDNA). The largest single filing was $926K of CDNA (20,000 sh × $46.28, as filed), executed Aug 5. Data as of Nov 8 2026.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
–
no purchases on file
Delay-adjustediThe same average, entered at disclosure dates
–
returns measure stock purchases only
Filings, ttm
1
0 buys · 1 sells
Median delay
–
measured on stock purchases
Volume, ttmiDollar value disclosed in the trailing twelve months
$926K
shares × price, as filed
Last traded
Aug 5
Filed Aug 6
Median ADV $47.9M across their filed names
Open performance→Volume by month
Buys $0
Sells $1.3M
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Healthcare
1 filing
Sector per market data · by filing · past 12 months
Most traded names
CDNARecent filings
CDNASALE
CareDx, Inc.
View filing →
$926K20,000 sh × $46.28
Exec Aug 5
Filed Aug 6 · 4:10 PM ET CDNASALE CareDx, Inc. View filing → $367K
20,000 sh × $18.36
Exec Mar 10 2025
Filed Mar 12 2025 · 5:30 PM ET