PTCTHealthcareMid-Cap
PTC THERAPEUTICS, INC. Insider Trading Activity
Every SEC Form 4 insider transaction reported for PTC THERAPEUTICS, INC. (PTCT), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud Research Team · SEC Form 4 & insider trading data analysts
Last updated:
Quick Answer
Are PTCT insiders buying or selling?
PTC THERAPEUTICS, INC. insiders reported 3 open-market buys ($2.5M) and 284 sells ($220.2M) across 287 Form 4 filings — a net selling position of $217.6M.
Source: SEC EDGAR Form 4
Key Statistics (as of Aug 28, 2026)
Total Form 4 filings
287
SEC EDGAR
Insider filers
20
Insider buys (3)
$2.5M
Insider sells (284)
$220.2M
Insider sentiment
Net sellingNet insider flow of $217.6M in net selling.
Recent PTCT insider transactions
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 28, 2026 | Michael Schmertzler | Director | Sale | 25.0K | $72.26 | $1.8M |
| Aug 21, 2026 | Michael Schmertzler | Director | Sale | 25.0K | $72.22 | $1.8M |
| Aug 19, 2026 | Mark Elliott Boulding | EXEC. VP AND CLO | Sale | 2.8K | $72.57 | $204.1K |
| Aug 6, 2026 | Matthew B. Klein | CHIEF EXECUTIVE OFFICER | Sale | 10.3K | $68.57 | $705.7K |
| Jul 16, 2026 | Pierre Gravier | CHIEF FINANCIAL OFFICER | Sale | 3.5K | $80.35 | $280.7K |
| Jul 13, 2026 | Mary L. Smith | Director | Sale | 15.8K | $90.00 | $1.4M |
| Jul 13, 2026 | Neil Gregory Almstead | CHIEF TECHNICAL OPS OFFICER | Sale | 2.5K | $90.25 | $222.4K |
| Jul 8, 2026 | Mark Elliott Boulding | EXEC. VP AND CLO | Sale | 5.1K | $85.08 | $432.1K |
| Jul 8, 2026 | Neil Gregory Almstead | CHIEF TECHNICAL OPS OFFICER | Sale | 46.8K | $87.52 | $4.1M |
| Jun 30, 2026 | Neil Gregory Almstead | CHIEF TECHNICAL OPS OFFICER | Sale | 8.1K | $85.26 | $693.2K |
| Jun 26, 2026 | Neil Gregory Almstead | CHIEF TECHNICAL OPS OFFICER | Sale | 26.3K | $85.78 | $2.3M |
| Jun 24, 2026 | Neil Gregory Almstead | CHIEF TECHNICAL OPS OFFICER | Sale | 23.7K | $80.90 | $1.9M |
| Jun 22, 2026 | Christine Marie Utter | SVP, CHIEF ACCOUNTING OFFICER | Sale | 19.7K | $75.56 | $1.5M |
| Jun 22, 2026 | Mark Elliott Boulding | EXEC. VP AND CLO | Sale | 10.5K | $78.65 | $822.9K |
| Jun 12, 2026 | Eric Pauwels | CHIEF BUSINESS OFFICER | Sale | 21.3K | $75.00 | $1.6M |
| May 19, 2026 | Mark Elliott Boulding | EXEC. VP AND CLO | Sale | 2.8K | $72.18 | $203.0K |
| May 15, 2026 | Matthew B. Klein | CHIEF EXECUTIVE OFFICER | Sale | 12.6K | $72.95 | $917.2K |
| May 12, 2026 | Mark Elliott Boulding | EXEC. VP AND CLO | Sale | 3.5K | $78.97 | $279.6K |
| Apr 23, 2026 | Matthew B. Klein | CHIEF EXECUTIVE OFFICER | Sale | 2.9K | $70.91 | $202.1K |
| Apr 8, 2026 | Mark Elliott Boulding | EXEC. VP AND CLO | Sale | 2.3K | $69.45 | $157.3K |
| Apr 6, 2026 | Lee Scott Golden | EVP & CHIEF MEDICAL OFFICER | Sale | 829 | $67.99 | $56.4K |
| Apr 3, 2026 | Neil Gregory Almstead | CHIEF TECHNICAL OPS OFFICER | Sale | 52.0K | $69.04 | $3.6M |
| Mar 13, 2026 | Matthew B. Klein | CHIEF EXECUTIVE OFFICER | Sale | 2.7K | $64.08 | $170.6K |
| Mar 12, 2026 | Stephanie Okey | Director | Sale | 15.2K | $70.00 | $1.1M |
| Mar 9, 2026 | Stephanie Okey | Director | Sale | 6.3K | $63.38 | $401.4K |
Showing the 25 most recent of 287 Form 4 filings for PTC THERAPEUTICS, INC..
Most active PTCT insiders
- Mark Elliott Boulding42 filings
- Neil Gregory Almstead39 filings
- Christine Marie Utter33 filings
- Eric Pauwels30 filings
- Stuart Walter Peltz29 filings
Ask anything about PTCT insider activity
Use Trabud's AI agent to query PTC THERAPEUTICS, INC.'s Form 4 history in plain English — "Show me PTCT CEO purchases this year" or compare it against any other ticker.
Open the AI agentPTCT insider trading FAQ
Are PTC THERAPEUTICS, INC. insiders buying or selling?
Across 287 SEC Form 4 filings, PTC THERAPEUTICS, INC. (PTCT) insiders reported 3 open-market purchases totaling $2.5M and 284 sales totaling $220.2M. That is a net selling position of $217.6M.
How many insiders trade PTCT stock?
20 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for PTC THERAPEUTICS, INC.. The most recent filing was accepted on Aug 28, 2026.
Where does Trabud get PTCT insider trading data?
All PTCT insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.
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