Form 4: Ptc Therapeutics Director Sells Shares
Insider Transaction (Form 4)
Michael Schmertzler, a Director of Ptc Therapeutics, Inc., sold 20,000 shares of common stock on September 16, 2026.
Summary
- Open-market sale: disposed of 2,994 Common Stock at $66.58 ($199,341) on September 16, 2026; holds 1,313,600 after (Indirect).
- Open-market sale: disposed of 7,006 Common Stock at $67.35 ($471,854) on September 16, 2026; holds 1,306,594 after (Indirect).
- Open-market sale: disposed of 9,624 Common Stock at $67.83 ($652,796) on September 17, 2026; holds 1,296,970 after (Indirect).
- Open-market sale: disposed of 376 Common Stock at $68.45 ($25,737) on September 17, 2026; holds 1,296,594 after (Indirect).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $1,349,728 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Michael Schmertzler — Director
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-09-16 | Open-market sale | Common Stock | 2,994 | $67 | $199.3K | 1,313,600 |
| 2026-09-16 | Open-market sale | Common Stock | 7,006 | $67 | $471.9K | 1,306,594 |
| 2026-09-17 | Open-market sale | Common Stock | 9,624 | $68 | $652.8K | 1,296,970 |
| 2026-09-17 | Open-market sale | Common Stock | 376 | $68 | $25.7K | 1,296,594 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-16 | Open-market sale (2,994 shares) |
| 2026-09-16 | Open-market sale (7,006 shares) |
| 2026-09-17 | Open-market sale (9,624 shares) |
| 2026-09-17 | Open-market sale (376 shares) |
Keywords
insider transaction, Form 4, PTCT, PTC THERAPEUTICS, INC., bearish, Michael Schmertzler
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