As of March 23, 2026, the three largest insider holders of PTCT are Matthew B. Klein (Chief Executive Officer, 387.08K shares), Stuart Walter Peltz (Chief Executive Officer, 221.87K shares), Michael Schmertzler (Director, 163.27K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Matthew B. Klein | Chief Executive Officer | 396,920 | 0 | 13 Mar, 2026 |
| Matthew B. Klein | Chief Executive Officer | 387,082 | 0 | 20 Feb, 2026 |
| Stuart Walter Peltz | Chief Executive Officer | 166,962 | 54,903 | 02 Feb, 2023 |
| Michael Schmertzler | 163,266 | 0 | 06 Jan, 2026 | |
| Neil Gregory Almstead | Chief Technical Ops Officer | 112,140 | 0 | 20 Feb, 2026 |
| Mark Elliott Boulding | Exec. Vp And Clo | 105,212 | 0 | 23 Feb, 2026 |
| Pierre Gravier | Chief Financial Officer | 87,318 | 0 | 20 Feb, 2026 |
| Lee Scott Golden | Evp Chief Medical Officer | 79,944 | 0 | 09 Mar, 2026 |
| Eric Pauwels | Chief Business Officer | 77,122 | 0 | 20 Feb, 2026 |
| Christine Marie Utter | Svp, Chief Accounting Officer | 70,199 | 0 | 20 Feb, 2026 |
| Emily Luisa Hill | Chief Financial Officer | 38,925 | 0 | 29 Mar, 2023 |
| Dawn Svoronos | 29,017 | 0 | 10 Jun, 2022 | |
| Jerome B Zeldis | 22,500 | 0 | 06 Jan, 2026 | |
| Glenn Jr Md Phd Steele | 22,500 | 0 | 06 Jan, 2026 | |
| Mary L. Smith | 21,813 | 0 | 06 Jan, 2026 | |
| Allan Steven Jacobson | 21,451 | 0 | 06 Jan, 2026 | |
| Alethia Young | 21,067 | 0 | 06 Jan, 2026 | |
| David P Southwell | 20,850 | 0 | 06 Jan, 2026 | |
| Emma Reeve | 10,666 | 0 | 06 Jan, 2026 | |
| William F. Jr. Bell | 10,333 | 0 | 16 Feb, 2024 | |
| Stephanie Okey | 8,000 | 0 | 12 Mar, 2026 | |
| Stephanie Okey | 8,000 | 0 | 09 Mar, 2026 | |
| Neil Gregory Almstead | Chief Technical Ops Officer | 0 | 2,737 | 09 Mar, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 11 Mar, 2026 | Matthew B. Klein | Common Stock | A | 12,500 | $0.00 | 399,582 | D | A |
| 12 Mar, 2026 | Matthew B. Klein | Common Stock | D | 2,662 | $64.08 | 396,920 | D | S |
| 10 Mar, 2026 | Stephanie Okey | Common Stock | A | 1,167 | $33.63 | 9,167 | D | M |
| 10 Mar, 2026 | Stephanie Okey | Common Stock | D | 1,167 | $70.00 | 8,000 | D | S |
| 10 Mar, 2026 | Stephanie Okey | Common Stock | A | 14,000 | $33.63 | 22,000 | D | M |
| 10 Mar, 2026 | Stephanie Okey | Common Stock | D | 14,000 | $70.00 | 8,000 | D | S |
| 10 Mar, 2026 | Stephanie Okey | Stock Option (Right to Buy) | D | 1,167 | $0.00 | 0 | D | M |
| 10 Mar, 2026 | Stephanie Okey | Stock Option (Right to Buy) | D | 14,000 | $0.00 | 0 | D | M |
| 05 Mar, 2026 | Stephanie Okey | Common Stock | D | 6,333 | $63.38 | 8,000 | D | S |
| 05 Mar, 2026 | Stephanie Okey | Common Stock | D | 6,333 | $63.38 | 8,000 | D | S |
| 05 Mar, 2026 | Lee Scott Golden | Common Stock | D | 10,000 | $63.38 | 79,944 | D | S |
| 05 Mar, 2026 | Neil Gregory Almstead | Common Stock | D | 3,989 | $63.38 | 2,737 | I | S |
| 19 Feb, 2026 | Mark Elliott Boulding | Common Stock | D | 588 | $68.54 | 107,643 | D | S |
| 19 Feb, 2026 | Mark Elliott Boulding | Common Stock | D | 1,629 | $69.82 | 106,014 | D | S |
| 19 Feb, 2026 | Mark Elliott Boulding | Common Stock | D | 212 | $68.54 | 105,802 | D | S |
| 19 Feb, 2026 | Mark Elliott Boulding | Common Stock | D | 590 | $69.82 | 105,212 | D | S |
| 18 Feb, 2026 | Pierre Gravier | Common Stock | D | 2,992 | $69.36 | 87,318 | D | S |
| 18 Feb, 2026 | Eric Pauwels | Common Stock | D | 3,019 | $69.36 | 77,122 | D | S |
| 18 Feb, 2026 | Neil Gregory Almstead | Common Stock | D | 3,056 | $69.36 | 112,140 | D | S |
| 18 Feb, 2026 | Matthew B. Klein | Common Stock | D | 7,371 | $69.36 | 387,082 | D | S |