Michael Schmertzler insider trades: Ptc Therapeutics (PTCT) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Michael reports to the SEC
Open-market buys and sales
21 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 14, 2026 | PTCT | ↓ Sell | 2,500 | $59.61 | $149K | Indirect | Oct 16, 2026 (2d) |
| Oct 7, 2026 | PTCT | ↓ Sell | 2,500 | $63.39 | $158K | Indirect | Oct 9, 2026 (2d) |
| Sep 17, 2026 | PTCT | ↓ Sell | 20,000 | $67.49 | $1.3M | Indirect | Sep 18, 2026 (1d) |
| Sep 10, 2026 | PTCT | ↓ Sell | 20,000 | $67.59 | $1.4M | Indirect | Sep 11, 2026 (1d) |
| Aug 27, 2026 | PTCT | ↓ Sell | 25,000 | $72.26 | $1.8M | Indirect | Aug 28, 2026 (1d) |
| Aug 20, 2026 | PTCT | ↓ Sell | 25,000 | $72.22 | $1.8M | Indirect | Aug 21, 2026 (1d) |
| Jan 8, 2024 | PTCT | ↓ Sell | 1,500 | $27.81 | $42K | Direct | Jan 10, 2024 (2d) |
| Jun 7, 2023 | PTCT | ↓ Sell | 1,000 | $44.86 | $45K | Direct | Jun 9, 2023 (2d) |
| Mar 16, 2020 | PTCT | ↑ Buy | 10,000 | $32.48 | $325K | Direct | Mar 18, 2020 (2d) |
| Jan 25, 2019 | PTCT | ↑ Buy | 66,225 | $30.20 | $2.0M | Indirect | Jan 29, 2019 (4d) |
| Feb 19, 2014 | PTCT | ↑ Buy | 23,000 | $24.50 | $564K | Indirect | Sep 8, 2014 (201d) |
| Jun 25, 2013 | PTCT | ↑ Buy | 533,333 | $15.00 | $8.0M | Indirect | Jun 27, 2013 (2d) |
| Jun 3, 2010 | CYTK | ↓ Sell | 5,382 | $3.00 | $16K | Indirect | Jun 4, 2010 (1d) |
| May 27, 2010 | CYTK | ↓ Sell | 57,608 | $3.00 | $173K | Indirect | May 28, 2010 (1d) |
| May 19, 2010 | CYTK | ↓ Sell | 16,239 | $3.00 | $49K | Indirect | May 20, 2010 (1d) |
| May 18, 2010 | CYTK | ↓ Sell | 414,588 | $3.00 | $1.2M | Indirect | May 19, 2010 (1d) |
| May 12, 2010 | CYTK | ↓ Sell | 82,738 | $3.00 | $248K | Indirect | May 13, 2010 (1d) |
| May 11, 2010 | CYTK | ↓ Sell | 36,500 | $3.00 | $110K | Indirect | May 13, 2010 (2d) |
| May 6, 2010 | CYTK | ↓ Sell | 33,446 | $3.03 | $101K | Indirect | May 7, 2010 (1d) |
| May 5, 2010 | CYTK | ↓ Sell | 402,100 | $3.04 | $1.2M | Indirect | May 7, 2010 (2d) |
| May 21, 2009 | CYTK | ↑ Buy | 1,522,840 | $1.97 | $3.0M | Indirect | May 22, 2009 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other PTCT insiders
Open-market trades in the last 12 months
About Michael Schmertzler's insider trades
Michael Schmertzler is an insider at Ptc Therapeutics (PTCT). Since May 21, 2009, Michael has reported 5 open-market purchases worth $13.9M and 16 sales worth $9.9M on SEC Form 4. In the last 12 months: 6 sales ($6.6M).
Their filings also include grants and awards (23 filings), other transactions (13 filings), option exercises (2 filings), conversions (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every PTCT insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.