Transaction · 0001288952-26-000004

SCHMERTZLER MICHAEL

SCHMERTZLER MICHAEL, DIR, reported an open-market or private sale at PTC THERAPEUTICS, INC. involving 2390.000000 shares for an estimated $171793.20. Reported holdings after the transaction were 1362285.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SDIR
PTCTPTC THERAPEUTICS, INC.
Filing timeAug 21
Trade dateAug 20, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$69.81
Pre-filing
1mo ago +12.4%1w ago +3.1%1d ago +5.5%
Returns since
7d +0.4%30d +0.4%90d +0.4%180d +0.4%1y +0.4%

PTCT price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
PTCT since 2026-08-21Filed 14 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001288952-26-000004
Common Stock
Transaction date
Aug 20, 2026
Filed Aug 21, 2026, 09:20 PM · 1d delay
Shares
2.39k sh
$7.18k per share
Estimated value
-$17.1M
Computed from shares × price
Holdings after
1.36M sh
Indirect · See footnote

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Cluster Selling Repeat Seller 10b5-1 Detected
-6score
Filing-only score

-6

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

No officer title

Officer NoDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by Section Six Partners, L.P., of which the Reporting Person is a general partner and limited partner, on May 14, 2026

  2. F2

    This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $72.33 to $73.32 per share. The Reporting Person hereby undertakes, u…

  3. F3

    Represents shares of common stock held by Section Six Partners, L.P. The Reporting Person is a general and limited partner of Section Six Partners, L.P. The Reporting Person disclaims beneficial owner…

  4. F4

    This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $73.33 to $74.02 per share. The Reporting Person hereby undertakes, u…

  5. F5

    This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $70.50 to $71.49 per share. The Reporting Person hereby undertakes, u…

  6. F6

    This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $71.50 to $72.46 per share. The Reporting Person hereby undertakes, u…

  7. F7

    This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $72.60 to $73.48 per share. The Reporting Person hereby undertakes, u…

Original filing · 0001288952-26-000004
Related transactions

0 other filings

Same reporting owner
Recent company activity

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