Klein Matthew B. (CIK 1808968) reported 23 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-05-21). Recent activity: Buy CLPT (12,417 shares), Buy PTCT (12,500 shares), Sell PTCT (679 shares), Sell PTCT (7,221 shares), Sell PTCT (2,100 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-21 | ClearPoint Neuro, Inc. (CLPT) | Director | Buy | 12,417 | $0 |
| 2026-05-15 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Buy | 12,500 | $0 |
| 2026-05-15 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 679 | $49,608 |
| 2026-05-15 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 7,221 | $527,711 |
| 2026-05-15 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 2,100 | $153,468 |
| 2026-05-15 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 2,572 | $186,367 |
| 2026-04-23 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 2,850 | $202,094 |
| 2026-03-13 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Buy | 12,500 | $0 |
| 2026-03-13 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 2,662 | $170,581 |
| 2026-02-20 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 7,371 | $511,253 |
| 2026-01-12 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 2,514 | $192,195 |
| 2026-01-08 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 5,149 | $396,216 |
| 2026-01-08 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 3,016 | $233,680 |
| 2026-01-06 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Buy | 63,000 | $0 |
| 2026-01-02 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 8,089 | $619,941 |
| 2025-12-03 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Buy | 15,625 | $0 |
| 2025-12-03 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 3,428 | $271,052 |
| 2025-08-05 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Buy | 75,000 | $0 |
| 2025-08-05 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 10,739 | $555,636 |
| 2025-05-19 | ClearPoint Neuro, Inc. (CLPT) | Director | Buy | 21,093 | $0 |
| 2025-04-24 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 2,804 | $136,667 |
| 2025-02-21 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 3,897 | $195,240 |
| 2025-02-21 | PTC THERAPEUTICS, INC. (PTCT) | CHIEF EXECUTIVE OFFICER | Sell | 3,895 | $195,217 |
Source: SEC Form 4 filings · as of 2026-05-21