PTC Therapeutics ($PTCT) Insider Trading & Smart Money Activity
PTC Therapeutics, Inc. ($PTCT) has 16 insider trades and 3 13F position changes on file. In the last 12 months on the open market, no insider bought and 4 insiders sold ($5.53M), net -$5.53M.
- Insider buyers (12 mo)
- 0
- Insider sellers (12 mo)
- 4
- Net insider $ (12 mo)
- -$5.53M
- Congress trades (12 mo)
- 0
- 13F moves on file
- 3
- Analyst ratings on file
- 0
PTCT insider buying and selling by quarter
| Quarter | Insider buys | Insider sales | Congress buys / sales | 13F added / cut |
|---|---|---|---|---|
| Q1 2026 | 0 | 0 | 0 / 0 | 0 / 0 |
| Q2 2026 | 0 | 3 · $2.95M | 0 / 0 | 0 / 2 |
| Q3 2026 | 0 | 3 · $2.13M | 0 / 0 | 0 / 0 |
| Q4 2026 | 0 | 5 · $452.65K | 0 / 0 | 0 / 1 |
Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.
All PTCT insider, congress, 13F and analyst activity
| Date | Source | Who | Action | Shares | Value / amount | ΔOwn | 1W | 1M | 6M | Filing | Story |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 13F | Burney Co/ | Sold out | -37.32K sh | Read | |||||||
| Insider | Michael SchmertzlerDirector | Sell (Open-market sale) 10b5-1 | 2.50K sh | $149.04K | -0.19% | SEC | Read | ||||
| Insider | Boulding Mark ElliottEXEC. VP AND CLO | Sell (Open-market sale) 10b5-1 | 192 sh | $12.34K | -8.4% | Read | |||||
| Insider | Michael SchmertzlerDirector | Sell (Open-market sale) 10b5-1 | 2.50K sh | $158.48K | -5.6% | — | |||||
| Insider | Boulding Mark ElliottEXEC. VP AND CLO | Sell (Open-market sale) 10b5-1 | 435 sh | $27.91K | -5.9% | — | |||||
| Insider | Boulding Mark ElliottEXEC. VP AND CLO | Sell (Open-market sale) 10b5-1 | 1.64K sh | $104.88K | -1.1% | — | |||||
| Insider | Steele Glenn JR Md PhdDirector | Sell (Open-market sale) 10b5-1 | 12K sh | $781.92K | -2.4% | — | |||||
| Insider | Michael SchmertzlerDirector | Sell (Open-market sale) 10b5-1 | 10K sh | $678.53K | -8.4% | — | |||||
| Insider | Michael SchmertzlerDirector | Sell (Open-market sale) 10b5-1 | 10K sh | $671.20K | -7.8% | -12.4% | — | ||||
| Insider | Almstead Neil GregoryCHIEF TECHNICAL OPS OFFICER | Sell (Open-market sale) 10b5-1 | 8.13K sh | $693.15K | +1.2% | -10.2% | Read | ||||
| Insider | Almstead Neil GregoryCHIEF TECHNICAL OPS OFFICER | Buy (Option exercise) | 8.13K sh | $309.75K | +1.2% | -10.2% | Read | ||||
| Insider | Almstead Neil GregoryCHIEF TECHNICAL OPS OFFICER | Sell (Open-market sale) 10b5-1 | 20.96K sh | $1.80M | -1.4% | -10.3% | — | ||||
| Insider | Almstead Neil GregoryCHIEF TECHNICAL OPS OFFICER | Buy (Option exercise) | 20.96K sh | $798.71K | -1.4% | -10.3% | — | ||||
| Insider | Almstead Neil GregoryCHIEF TECHNICAL OPS OFFICER | Sell (Open-market sale) 10b5-1 | 5.32K sh | $452.61K | -3.6% | -9.0% | Read | ||||
| Insider | Almstead Neil GregoryCHIEF TECHNICAL OPS OFFICER | Buy (Option exercise) | 5.32K sh | $202.81K | -3.6% | -9.0% | Read | ||||
| Insider | Almstead Neil GregoryCHIEF TECHNICAL OPS OFFICER | Sell (Option exercise) | 23.75K sh | +0.8% | -3.2% | Read | |||||
| Insider | Almstead Neil GregoryCHIEF TECHNICAL OPS OFFICER | Buy (Option exercise) | 23.75K sh | $610.11K | +0.8% | -3.2% | — | ||||
| 13F | Avoro Capital Advisors | Sold out | -685K sh | -3.7% | +7.4% | Read | |||||
| 13F | Avoro Capital Advisors | Sold out | -685K sh | -3.7% | +7.4% | Read |
1W / 1M / 6M = how PTCT moved from the trade or filing date.
Insider trading in PTCT: who is buying and selling
| Insider | Role | Trades | Open-market net | Shares held | Last trade |
|---|---|---|---|---|---|
| Michael Schmertzler | Director | 4 | -$1.66M | 1.29M | Oct 14, 2026 |
| Boulding Mark Elliott | EXEC. VP AND CLO | 3 | -$145.13K | Oct 9, 2026 | |
| Steele Glenn JR Md Phd | Director | 1 | -$781.92K | Sep 30, 2026 | |
| Almstead Neil Gregory | CHIEF TECHNICAL OPS OFFICER | 8 | -$2.95M | Jun 26, 2026 |
Institutions moving PTCT (13F)
Frequently asked questions
Are PTCT insiders buying or selling?
Over the last 12 months 0 insiders made 0 open-market purchases worth $0 and 4 insiders made 11 open-market sales worth $5.53M, a net -$5.53M.
What is the latest insider trade in PTCT?
Michael Schmertzler, Director filed a sell (open-market sale) of 2.50K sh worth $149.04K on Oct 14, 2026.
Which institutions changed their PTCT positions?
Recent 13F filers moving the stock include Avoro Capital Advisors and Burney Co/.
Other biotechnology stocks
Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.
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