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sellWeak10b5-1 plan

Mark Elliott Boulding sold $130k of PTCT

EXEC. VP AND CLO at PTC THERAPEUTICS, INC.. 2,812 shares at an average of $46.13, traded May 15, 2025, filed May 19, 2025.

Warning score
0
Value
$130k
2,812 shares
Holdings after
103,901
-3% from before
From 52-week low
+40%
low $32.27, close $45.31
From 52-week high
-21%
high $57.17, as of May 15, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $130k at market
    +11
  • Share of holdings sold
    Sold 2.7% of holdings
    0
  • Cluster
    No other insider selling within 14 days
    0
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

PTCTOct 9, 2026 · close 64.70
Since filing May 19, 2025: +37.8%SPY +33.1% · excess +4.7%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001415889-25-013661, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 15, 2025MOption exercise
Common Stock10b5-1
+1,929$25.69$50k105,830May 19, 2025
May 15, 2025SOpen-market sale
Common Stock10b5-1
-1,929$46.18$89k103,901May 19, 2025
May 16, 2025MOption exercise
Common Stock10b5-1
+883$25.69$23k104,784May 19, 2025
May 16, 2025SOpen-market sale
Common Stock10b5-1
-883$46.02$41k103,901May 19, 2025
May 15, 2025MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-1,929$0.00$028,595May 19, 2025
May 16, 2025MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-883$0.00$027,712May 19, 2025

Related signals

Other insiders at PTC THERAPEUTICS, INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
21Weak
PTCTsell 310b5-1
PTC THERAPEUTICS, INC.
Michael Schmertzler
director
$158k
2,500 shares
-0%
6Weak
PTCTsell 310b5-1
PTC THERAPEUTICS, INC.
Mark Elliott Boulding
EXEC. VP AND CLO
$133k
2,073 shares
-2%
27Weak
PTCTsell 310b5-1
PTC THERAPEUTICS, INC.
Glenn Steele Jr Md Phd
director
$782k
12,000 shares
-35%
28Weak
PTCTsell 210b5-1
PTC THERAPEUTICS, INC.
Michael Schmertzler
director
$1.3M
20,000 shares
-2%
20Weak
PTCTsell10b5-1
PTC THERAPEUTICS, INC.
Michael Schmertzler
director
$1.4M
20,000 shares
-1%
43Moderate
PTCTsell 310b5-1
PTC THERAPEUTICS, INC.
Neil Gregory Almstead
CHIEF TECHNICAL OPS OFFICER
$253k
3,989 shares
-59%
35Weak
PTCTsell 310b5-1
PTC THERAPEUTICS, INC.
Lee Scott Golden
EVP & CHIEF MEDICAL OFFICER
$634k
10,000 shares
-11%
22Weak
PTCTsell 410b5-1
PTC THERAPEUTICS, INC.
Mark Elliott Boulding
EXEC. VP AND CLO
$210k
3,019 shares
-3%
22Weak
PTCTsell 410b5-1
PTC THERAPEUTICS, INC.
Neil Gregory Almstead
CHIEF TECHNICAL OPS OFFICER
$216k
3,121 shares
-3%
21Weak
PTCTsell 410b5-1
PTC THERAPEUTICS, INC.
Lee Scott Golden
EVP & CHIEF MEDICAL OFFICER
$172k
2,484 shares
-3%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Mark Elliott Boulding sold $130k of PTCT | InsiderTell