Mark Elliott Boulding insider trades: Ptc Therapeutics (PTCT) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Mark reports to the SEC
Open-market buys and sales
47 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 9, 2026 | PTCT | ↓ Sell | 192 | $64.26 | $12K | Direct | Oct 13, 2026 (4d) |
| Oct 6, 2026 | PTCT | ↓ Sell | 2,073 | $64.06 | $133K | Direct | Oct 7, 2026 (1d) |
| Aug 17, 2026 | PTCT | ↓ Sell | 2,813 | $72.57 | $204K | Direct | Aug 19, 2026 (2d) |
| Jul 6, 2026 | PTCT | ↓ Sell | 5,079 | $85.08 | $432K | Direct | Jul 8, 2026 (2d) |
| Jun 17, 2026 | PTCT | ↓ Sell | 10,462 | $78.65 | $823K | Direct | Jun 22, 2026 (5d) |
| May 15, 2026 | PTCT | ↓ Sell | 2,812 | $72.18 | $203K | Direct | May 19, 2026 (4d) |
| May 8, 2026 | PTCT | ↓ Sell | 3,540 | $78.97 | $280K | Direct | May 12, 2026 (4d) |
| Apr 6, 2026 | PTCT | ↓ Sell | 2,265 | $69.45 | $157K | Direct | Apr 8, 2026 (2d) |
| Feb 19, 2026 | PTCT | ↓ Sell | 3,019 | $69.48 | $210K | Direct | Feb 23, 2026 (4d) |
| Feb 18, 2026 | PTCT | ↓ Sell | 5,894 | $69.33 | $409K | Direct | Feb 19, 2026 (1d) |
| Jan 9, 2026 | PTCT | ↓ Sell | 6,347 | $77.06 | $489K | Direct | Jan 12, 2026 (3d) |
| Jan 7, 2026 | PTCT | ↓ Sell | 6,618 | $77.31 | $512K | Direct | Jan 8, 2026 (1d) |
| Jan 5, 2026 | PTCT | ↓ Sell | 2,266 | $75.55 | $171K | Direct | Jan 6, 2026 (1d) |
| Nov 17, 2025 | PTCT | ↓ Sell | 2,812 | $75.99 | $214K | Direct | Nov 19, 2025 (2d) |
| Oct 7, 2025 | PTCT | ↓ Sell | 3,375 | $63.43 | $214K | Direct | Oct 9, 2025 (2d) |
| Oct 6, 2025 | PTCT | ↓ Sell | 24,921 | $65.75 | $1.6M | Direct | Oct 7, 2025 (1d) |
| Sep 12, 2025 | PTCT | ↓ Sell | 47,249 | $61.18 | $2.9M | Direct | Sep 15, 2025 (3d) |
| Aug 15, 2025 | PTCT | ↓ Sell | 2,813 | $48.58 | $137K | Direct | Aug 19, 2025 (4d) |
| May 16, 2025 | PTCT | ↓ Sell | 2,812 | $46.13 | $130K | Direct | May 19, 2025 (3d) |
| Mar 12, 2025 | PTCT | ↓ Sell | 15,521 | $53.30 | $827K | Direct | Mar 14, 2025 (2d) |
| Mar 11, 2025 | PTCT | ↓ Sell | 75,420 | $53.08 | $4.0M | Direct | Mar 12, 2025 (1d) |
| Feb 20, 2025 | PTCT | ↓ Sell | 2,947 | $50.11 | $148K | Direct | Feb 21, 2025 (1d) |
| Jan 8, 2025 | PTCT | ↓ Sell | 3,541 | $44.87 | $159K | Direct | Jan 10, 2025 (2d) |
| Dec 3, 2024 | PTCT | ↓ Sell | 95,908 | $52.37 | $5.0M | Direct | Dec 4, 2024 (1d) |
| Jan 30, 2024 | PTCT | ↓ Sell | 794 | $27.25 | $22K | Direct | Feb 1, 2024 (2d) |
| Jan 9, 2024 | PTCT | ↓ Sell | 3,395 | $28.85 | $98K | Direct | Jan 10, 2024 (1d) |
| Apr 17, 2023 | PTCT | ↓ Sell | 61,923 | $51.42 | $3.2M | Direct | Apr 19, 2023 (2d) |
| Jan 31, 2023 | PTCT | ↓ Sell | 812 | $45.63 | $37K | Direct | Feb 2, 2023 (2d) |
| Jan 11, 2023 | PTCT | ↓ Sell | 1,085 | $43.58 | $47K | Direct | Jan 12, 2023 (1d) |
| Jan 9, 2023 | PTCT | ↓ Sell | 835 | $41.66 | $35K | Direct | Jan 11, 2023 (2d) |
| Oct 18, 2022 | PTCT | ↓ Sell | 6,901 | $55.00 | $380K | Direct | Oct 19, 2022 (1d) |
| Sep 20, 2022 | PTCT | ↓ Sell | 1,176 | $55.00 | $65K | Direct | Sep 22, 2022 (2d) |
| Apr 13, 2022 | PTCT | ↓ Sell | 2,276 | $45.17 | $103K | Direct | Apr 15, 2022 (2d) |
| Apr 5, 2022 | PTCT | ↓ Sell | 5 | $45.00 | $225 | Direct | Apr 7, 2022 (2d) |
| Feb 10, 2022 | PTCT | ↓ Sell | 17,935 | $45.03 | $808K | Direct | Feb 11, 2022 (1d) |
| Feb 1, 2022 | PTCT | ↓ Sell | 779 | $40.00 | $31K | Direct | Feb 3, 2022 (2d) |
| Jan 7, 2022 | PTCT | ↓ Sell | 885 | $38.52 | $34K | Direct | Jan 11, 2022 (4d) |
| Sep 2, 2021 | PTCT | ↓ Sell | 3,363 | $45.01 | $151K | Direct | Sep 3, 2021 (1d) |
| Jul 9, 2021 | PTCT | ↓ Sell | 9,234 | $45.19 | $417K | Direct | Jul 12, 2021 (3d) |
| Feb 1, 2021 | PTCT | ↓ Sell | 778 | $56.96 | $44K | Direct | Feb 2, 2021 (1d) |
| Jan 5, 2021 | PTCT | ↓ Sell | 772 | $62.37 | $48K | Direct | Jan 7, 2021 (2d) |
| Jul 7, 2020 | PTCT | ↓ Sell | 30,625 | $55.12 | $1.7M | Direct | Jul 9, 2020 (2d) |
| Jul 5, 2019 | PTCT | ↓ Sell | 15,312 | $44.74 | $685K | Direct | Jul 9, 2019 (4d) |
| Jul 1, 2019 | PTCT | ↓ Sell | 181,667 | $45.00 | $8.2M | Direct | Jul 2, 2019 (1d) |
| Jun 8, 2015 | PTCT | ↓ Sell | 56,849 | $55.04 | $3.1M | Direct | Jun 10, 2015 (2d) |
| Mar 20, 2015 | PTCT | ↓ Sell | 21,142 | $68.12 | $1.4M | Direct | Mar 23, 2015 (3d) |
| Mar 20, 2014 | PTCT | ↓ Sell | 10,049 | $30.96 | $311K | Direct | Mar 21, 2014 (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 Mark Elliott Boulding's insider trades
Mark Elliott Boulding is Exec. VP and CLO at Ptc Therapeutics (PTCT). Since Mar 20, 2014, Mark has reported no open-market purchases and 47 sales worth $40.3M on SEC Form 4. In the last 12 months: 14 sales ($4.2M).
Their filings also include option exercises (32 filings), grants and awards (13 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.