Company · Ownership research

PTC THERAPEUTICS, INC. PTCT

CIK 0001070081

Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 70 rows; the complete set is available through the API.

Insider filings on file run through 2026-09-11.

Insider purchases & sales

Purchased: $198.74K
Sold: $93.08M

Sep 1, 2023 – Sep 11, 2026
Available records · partial months are marked ·

202510 of 30 preview events · 70 available in 2025

Date	Insider	Activity	Trade value (USD)	% of prior holding
2025-12-30	Klein Matthew B. CHIEF EXECUTIVE OFFICER · Director	Sale	$619.94K 8,089 shares sold	2.31% sold Direct holding	▾
2025-12-19	Pauwels Eric CHIEF BUSINESS OFFICER	Sale10b5-1 footnote	$1.58M 20,508 shares sold	Unavailable Direct holding	▾
2025-12-18	Pauwels Eric CHIEF BUSINESS OFFICER	Sale10b5-1 footnote	$240.35K 3,202 shares sold	Unavailable Direct holding	▾
2025-12-17	Pauwels Eric CHIEF BUSINESS OFFICER	Sale10b5-1 footnote	$3.04M 40,290 shares sold	Unavailable Direct holding	▾
2025-12-03	Reeve Emma Director	Sale10b5-1 footnote	$57.63K 733 shares sold	9.91% sold Direct holding	▾
2025-12-02	Klein Matthew B. CHIEF EXECUTIVE OFFICER · Director	Sale	$271.05K 3,428 shares sold	0.97% sold Direct holding	▾
2025-11-25	Jacobson Allan Steven Director	Sale10b5-1 footnote	$1.19M 14,199 shares sold	Unavailable Direct holding	▾
2025-11-25	Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER	Sale10b5-1 footnote	$6.00M 71,928 shares sold	Unavailable Direct holding	▾
2025-11-24	Jacobson Allan Steven Director	Sale10b5-1 footnote	$945.74K 11,801 shares sold	Unavailable Direct holding	▾
2025-11-24	Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER	Sale10b5-1 footnote	$2.85M 35,572 shares sold	Unavailable Direct holding	▾

Showing 30 / 70 record groups in 2025. The complete set is available through the API.

PTC THERAPEUTICS, INC. · PTCT

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 30 of 70 purchase / sale groups and 30 of 110 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"PTCT","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.