DS
David P Southwell (Director) filed 1 Form 4 report in the past 24 months (0 purchases, 1 sale), most often in PTC Therapeutics, Inc. (PTCT). The largest single filing was $700K of PTCT (12,000 sh × $58.34, as filed), executed Sep 9 2025. 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
$700K
shares × price, as filed
Last traded
Sep 9 2025
Filed Sep 11 2025
Median ADV $125.1M across their filed names
Open performance→Volume by month
Buys $0
Sells $700K
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Healthcare
1 filing
Sector per market data · by filing · past 24 months
Most traded names
PTCTRecent filings
PTCTSALE
PTC Therapeutics, Inc.
View filing →
$700K12,000 sh × $58.34
Exec Sep 9 2025
Filed Sep 11 2025 · 5:30 PM ET