Based on data from the past 90 days ending January 09, 2026, Ptc Therapeutics's three largest insider shareholders are Chief Executive Officer Matthew B. Klein (396.97K shares), Chief Executive Officer Stuart Walter Peltz (221.87K shares), Director Michael Schmertzler (163.27K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Matthew B. Klein | Chief Executive Officer | 396,967 | 08 Jan, 2026 |
| Stuart Walter Peltz | Chief Executive Officer | 221,865 | 02 Feb, 2023 |
| Michael Schmertzler | 163,266 | 06 Jan, 2026 | |
| Neil Gregory Almstead | Chief Technical Ops Officer | 122,927 | 08 Jan, 2026 |
| Mark Elliott Boulding | Exec. Vp And Clo | 117,659 | 08 Jan, 2026 |
| Lee Scott Golden | Evp & Chief Medical Officer | 93,294 | 08 Jan, 2026 |
| Pierre Gravier | Chief Financial Officer | 90,310 | 08 Jan, 2026 |
| Eric Pauwels | Chief Business Officer | 87,489 | 08 Jan, 2026 |
| Christine Marie Utter | Svp And Chief Accounting Officer | 73,727 | 08 Jan, 2026 |
| Emily Luisa Hill | Chief Financial Officer | 38,925 | 29 Mar, 2023 |
| Dawn Svoronos | 29,017 | 10 Jun, 2022 | |
| Glenn Jr Md Phd Steele | 22,500 | 06 Jan, 2026 | |
| Jerome B Zeldis | 22,500 | 06 Jan, 2026 | |
| Mary L. Smith | 21,813 | 06 Jan, 2026 | |
| Allan Steven Jacobson | 21,451 | 06 Jan, 2026 | |
| Alethia Young | 21,067 | 06 Jan, 2026 | |
| David P Southwell | 20,850 | 06 Jan, 2026 | |
| Stephanie Okey | 12,000 | 06 Jan, 2026 | |
| Emma Reeve | 10,666 | 06 Jan, 2026 | |
| William F. Jr. Bell | 10,333 | 16 Feb, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 07 Jan, 2026 | Eric Pauwels | Common Stock | D | 1,352 | $77.48 | 87,489 | D | S |
| 07 Jan, 2026 | Neil Gregory Almstead | Common Stock | D | 52 | $77.48 | 6,850 | I | S |
| 07 Jan, 2026 | Neil Gregory Almstead | Common Stock | D | 1,026 | $77.48 | 116,077 | D | S |
| 07 Jan, 2026 | Mark Elliott Boulding | Common Stock | D | 11 | $78.98 | 117,659 | D | S |
| 07 Jan, 2026 | Mark Elliott Boulding | Common Stock | D | 1,638 | $77.11 | 118,646 | D | S |
| 07 Jan, 2026 | Mark Elliott Boulding | Common Stock | D | 1,503 | $77.48 | 117,659 | D | S |
| 07 Jan, 2026 | Mark Elliott Boulding | Common Stock | A | 2,625 | $38.10 | 120,284 | D | M |
| 07 Jan, 2026 | Mark Elliott Boulding | Common Stock | A | 751 | $38.10 | 118,410 | D | M |
| 07 Jan, 2026 | Mark Elliott Boulding | Common Stock | D | 269 | $77.92 | 117,670 | D | S |
| 07 Jan, 2026 | Mark Elliott Boulding | Common Stock | D | 949 | $77.91 | 117,697 | D | S |
| 07 Jan, 2026 | Mark Elliott Boulding | Common Stock | D | 471 | $77.10 | 117,939 | D | S |
| 07 Jan, 2026 | Mark Elliott Boulding | Common Stock | D | 38 | $78.60 | 117,659 | D | S |
| 07 Jan, 2026 | Lee Scott Golden | Common Stock | D | 642 | $77.48 | 93,294 | D | S |
| 07 Jan, 2026 | Christine Marie Utter | Common Stock | D | 1,235 | $77.45 | 73,727 | D | S |
| 07 Jan, 2026 | Matthew B. Klein | Common Stock | D | 3,016 | $77.48 | 396,967 | D | S |
| 06 Jan, 2026 | Eric Pauwels | Common Stock | D | 1,789 | $76.95 | 88,841 | D | S |
| 06 Jan, 2026 | Neil Gregory Almstead | Common Stock | D | 54 | $76.95 | 6,902 | I | S |
| 06 Jan, 2026 | Neil Gregory Almstead | Common Stock | D | 1,279 | $76.95 | 117,103 | D | S |
| 06 Jan, 2026 | Mark Elliott Boulding | Common Stock | D | 1,739 | $76.95 | 119,162 | D | S |
| 06 Jan, 2026 | Lee Scott Golden | Common Stock | D | 1,340 | $76.95 | 93,936 | D | S |