David P Southwell 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 David reports to the SEC
and 3 more companies
Open-market buys and sales
27 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Sep 9, 2025 | PTCT | ↓ Sell | 12,000 | $58.34 | $700K | Direct | Sep 11, 2025 (2d) |
| Apr 15, 2024 | RCKT | ↓ Sell | 80,000 | $24.32 | $1.9M | Direct | Apr 16, 2024 (1d) |
| Apr 17, 2023 | PTCT | ↓ Sell | 11,429 | $51.03 | $583K | Direct | Apr 19, 2023 (2d) |
| Mar 31, 2023 | PTCT | ↓ Sell | 2,571 | $50.05 | $129K | Direct | Apr 4, 2023 (4d) |
| Mar 27, 2023 | PTCT | ↓ Sell | 10,000 | $45.10 | $451K | Direct | Mar 29, 2023 (2d) |
| May 18, 2022 | TCRX | ↑ Buy | 25,000 | $3.59 | $90K | Direct | May 20, 2022 (2d) |
| Sep 8, 2021 | TCRX | ↑ Buy | 11,000 | $8.73 | $96K | Direct | Sep 9, 2021 (1d) |
| Oct 16, 2020 | PTCT | ↓ Sell | 27,000 | $51.54 | $1.4M | Direct | Oct 20, 2020 (4d) |
| Dec 13, 2018 | RCKT | ↓ Sell | 38,768 | $15.19 | $589K | Direct | Dec 14, 2018 (1d) |
| Dec 7, 2018 | RCKT | ↓ Sell | 57,732 | $15.13 | $873K | Direct | Dec 10, 2018 (3d) |
| Jan 6, 2017 | ITEK | ↑ Buy | 60,000 | $1.75 | $105K | Direct | Jan 9, 2017 (3d) |
| Jul 6, 2015 | PTCT | ↓ Sell | 23,604 | $47.52 | $1.1M | Direct | Jul 6, 2015 (0d) |
| Mar 23, 2015 | PTCT | ↓ Sell | 2,317 | $69.04 | $160K | Direct | Mar 23, 2015 (0d) |
| Mar 21, 2014 | PTCT | ↓ Sell | 2,317 | $30.93 | $72K | Direct | Mar 24, 2014 (3d) |
| Dec 6, 2010 | TCRD | ↑ Buy | 12,100 | $13.00 | $157K | Direct | Dec 7, 2010 (1d) |
| Nov 24, 2010 | TCRD | ↑ Buy | 200 | $12.84 | $3K | Direct | Nov 29, 2010 (5d) |
| Nov 23, 2010 | TCRD | ↑ Buy | 201 | $12.83 | $3K | Direct | Nov 24, 2010 (1d) |
| Nov 19, 2010 | TCRD | ↑ Buy | 11,899 | $12.84 | $153K | Direct | Nov 22, 2010 (3d) |
| Nov 17, 2010 | TCRD | ↑ Buy | 14,100 | $12.84 | $181K | Direct | Nov 18, 2010 (1d) |
| Mar 13, 2009 | HGSI | ↑ Buy | 73,000 | $0.72 | $52K | Direct | Mar 16, 2009 (3d) |
| Sep 10, 2007 | SEPR | ↓ Sell | 21,189 | $27.57 | $584K | Direct | Sep 12, 2007 (2d) |
| Sep 10, 2007 | SEPR | ↓ Sell | 20,511 | $27.29 | $560K | Direct | Sep 12, 2007 (2d) |
| Sep 10, 2007 | SEPR | ↓ Sell | 8,300 | $27.98 | $232K | Direct | Sep 12, 2007 (2d) |
| Sep 4, 2007 | SEPR | ↓ Sell | 21,399 | $29.05 | $622K | Direct | Sep 6, 2007 (2d) |
| Sep 4, 2007 | SEPR | ↓ Sell | 17,096 | $29.23 | $500K | Direct | Sep 6, 2007 (2d) |
| Sep 4, 2007 | SEPR | ↓ Sell | 16,281 | $29.29 | $477K | Direct | Sep 6, 2007 (2d) |
| Oct 25, 2005 | SEPR | ↓ Sell | 100,000 | $56.65 | $5.7M | Indirect | Oct 27, 2005 (2d) |
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 David P Southwell's insider trades
David P Southwell is an insider at Ptc Therapeutics (PTCT). Since Oct 25, 2005, David has reported 9 open-market purchases worth $839K and 18 sales worth $16.7M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include grants and awards (45 filings), option exercises (16 filings), shares returned to the company (3 filings), other transactions (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.