Mark Elliott Boulding

EXEC. VP AND CLO

Mark Elliott Boulding (EXEC. VP AND CLO) filed 12 Form 4 reports in the trailing twelve months (0 purchases, 12 sales), most often in PTC Therapeutics, Inc. (PTCT). The largest single filing was $1.3M of PTCT (20,390 sh across 5 lots, as filed), executed Oct 3 2025.

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Return, 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

0 buys · 12 sells

Median delay

–

execution → disclosure

Volume, ttmiDollar value disclosed in the trailing twelve months

$4.2M

shares × price, as filed

Last traded

Aug 17

Filed Aug 19

Median ADV $125.1M across their filed names

Open performance→

Volume by month

Buys $0 Sells $16.7M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on

Healthcare 12 filings

Sector per market data · by filing · past 12 months

Most traded names

PTCT

PTC Therapeutics, Inc. PTCT · 0 buys · 17 sells 17 filings

Recent filings

PTCTSALE PTC Therapeutics, Inc. View filing → $133K
1,844 sh × $72.39
Exec Aug 17
Filed Aug 19 · 5:20 PM ET PTCTSALE PTC Therapeutics, Inc. View filing → $798K
10,153 sh across 3 lots
Exec Jun 17
Filed Jun 22 · 5:30 PM ET PTCTSALE PTC Therapeutics, Inc. View filing → $170K
2,356 sh × $72.08
Exec May 15
Filed May 19 · 5:30 PM ET PTCTSALE PTC Therapeutics, Inc. View filing → $151K
1,900 sh × $79.31
Exec May 8
Filed May 12 · 5:30 PM ET PTCTSALE PTC Therapeutics, Inc. View filing → $101K
1,443 sh × $69.75
Exec Apr 6
Filed Apr 8 · 5:30 PM ET PTCTSALE PTC Therapeutics, Inc. View filing → $114K
1,629 sh × $69.82
Exec Feb 19
Filed Feb 23 · 5:30 PM ET PTCTSALE PTC Therapeutics, Inc. View filing → $408K
5,892 sh across 2 lots
Exec Feb 17
Filed Feb 19 · 5:30 PM ET PTCTSALE PTC Therapeutics, Inc. View filing → $308K
4,003 sh across 2 lots
Exec Jan 8
Filed Jan 12 · 5:30 PM ET More filings →