SEC Form 4 · Updated Daily
PTCT
— PTC THERAPEUTICS, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| HBM Healthcare Investments (Cayman) Ltd. | 10%+ Owner | 2,441,504 | 2013-12-17 | S |
| Koppel Adam | 10%+ Owner · Director | 2,333,333 | 2013-06-25 | P |
| CREDIT SUISSE AG/ | Reporting Owner | 2,256,882 | 2013-06-25 | C |
| SCHMERTZLER MICHAEL | Director | 1,291,976 | 2026-10-14 | S |
| VCVC III LLC | Director | 803,067 | 2013-06-25 | P |
| VCVC Management III LLC | Director | 803,067 | 2013-06-25 | P |
| ALLEN PAUL G | Director | 803,067 | 2013-06-25 | P |
| Vulcan Capital Venture Capital Management I, LLC | Director | 803,067 | 2013-06-25 | P |
| Vulcan Capital Venture Capital I LLC | Director | 803,067 | 2013-06-25 | P |
| Vulcan Ventures Inc. | Director | 803,067 | 2013-06-25 | P |
| Cougar Investment Holdings LLC | Director | 803,067 | 2013-06-25 | P |
| Klein Matthew B. | Director · Officer | 383,868 | 2026-08-04 | S |
| Peltz Stuart Walter | Director · Officer | 166,962 | 2023-01-31 | S |
| Boulding Mark Elliott | Officer | 105,464 | 2026-10-09 | M |
| Pauwels Eric | Officer | 90,977 | 2026-06-10 | M |
| Utter Christine Marie | Officer | 89,885 | 2026-06-17 | M |
| Gravier Pierre | Officer | 83,986 | 2026-07-14 | S |
| Golden Lee Scott | Officer | 79,115 | 2026-04-02 | S |
| Almstead Neil Gregory | Officer | 62,763 | 2026-07-09 | M |
| Sollie-Zetlmayer Hege Elisabeth | Director | 52,526 | 2026-07-28 | A |
| Hirawat Claudia de Oliveira Ribeiro | Officer | 41,396 | 2015-01-15 | M |
| Hill Emily Luisa | Officer | 38,925 | 2023-03-27 | S |
| Kovacs Shane William Charles | Officer | 37,850 | 2017-05-09 | M |
| STEELE GLENN JR MD PHD | Director | 34,500 | 2026-09-30 | M |
| Rothera Mark | Officer | 33,739 | 2017-05-24 | M |
| Smith Mary L. | Director | 31,813 | 2026-07-09 | M |
| Svoronos Dawn | Director | 29,017 | 2022-06-09 | S |
| ZELDIS JEROME B | Director | 22,500 | 2026-01-02 | A |
| Okey Stephanie | Director | 22,000 | 2026-03-10 | M |
| Jacobson Allan Steven | Director | 21,451 | 2026-01-02 | A |
| Young Alethia | Director | 21,067 | 2026-01-02 | A |
| SOUTHWELL DAVID P | Director | 20,850 | 2026-01-02 | A |
| Bolte Axel | Director | 20,000 | 2013-06-25 | P |
| Reeve Emma | Director | 11,400 | 2026-01-05 | M |
| Bell William F. Jr. | Director | 10,333 | 2024-02-15 | A |
| Barth Jay Allan | Officer | 7,387 | 2013-06-19 | — |
| Souza Marcio | Officer | 7,369 | 2020-02-10 | M |
| Chutter Jessica Caroline | Director | 7,333 | 2026-03-24 | A |
| ALDRICH RICHARD | Director | 7,000 | 2015-06-08 | M |
| Ong Tuyen | Officer | 6,000 | 2017-01-03 | A |
| Spiegel Robert J. | Director | 3,241 | 2015-03-13 | S |
| Kranda Michael L | Director | 3,042 | 2015-03-16 | S |
| McDonough Cameron Geoffrey | Director | 909 | 2013-06-19 | — |
| Complete Pharma Holdings II, LLC | 10%+ Owner | 0 | 2017-04-28 | J |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-14 | SCHMERTZLER MICHAEL | Open-market sale | 382 | $60.14 | 1,291,594 |
| 2026-10-14 | SCHMERTZLER MICHAEL | Open-market sale | 2,118 | $59.52 | 1,291,976 |
| 2026-10-09 | Boulding Mark Elliott | Option exercise (derivative) | 192 | $0.00 | 2,267 |
| 2026-10-09 | Boulding Mark Elliott | Open-market sale | 192 | $64.26 | 105,272 |
| 2026-10-09 | Boulding Mark Elliott | Option exercise | 192 | $39.42 | 105,464 |
| 2026-10-07 | SCHMERTZLER MICHAEL | Open-market sale | 53 | $63.95 | 1,294,094 |
| 2026-10-07 | SCHMERTZLER MICHAEL | Open-market sale | 2,447 | $63.38 | 1,294,147 |
| 2026-10-06 | Boulding Mark Elliott | Option exercise (derivative) | 435 | $0.00 | 2,459 |
| 2026-10-06 | Boulding Mark Elliott | Open-market sale | 435 | $64.16 | 105,272 |
| 2026-10-06 | Boulding Mark Elliott | Option exercise | 435 | $39.42 | 105,707 |
| 2026-10-05 | Boulding Mark Elliott | Option exercise (derivative) | 1,638 | $0.00 | 2,894 |
| 2026-10-05 | Boulding Mark Elliott | Open-market sale | 1,638 | $64.03 | 105,272 |
| 2026-10-05 | Boulding Mark Elliott | Option exercise | 1,638 | $39.42 | 106,910 |
| 2026-09-30 | STEELE GLENN JR MD PHD | Option exercise (derivative) | 12,000 | $0.00 | 0 |
| 2026-09-30 | STEELE GLENN JR MD PHD | Open-market sale | 12,000 | $65.16 | 22,500 |
| 2026-09-30 | STEELE GLENN JR MD PHD | Option exercise | 12,000 | $11.23 | 34,500 |
| 2026-09-17 | SCHMERTZLER MICHAEL | Open-market sale | 376 | $68.45 | 1,296,594 |
| 2026-09-17 | SCHMERTZLER MICHAEL | Open-market sale | 9,624 | $67.83 | 1,296,970 |
| 2026-09-16 | SCHMERTZLER MICHAEL | Open-market sale | 7,006 | $67.35 | 1,306,594 |
| 2026-09-16 | SCHMERTZLER MICHAEL | Open-market sale | 2,994 | $66.58 | 1,313,600 |
| 2026-09-10 | SCHMERTZLER MICHAEL | Open-market sale | 10,000 | $67.34 | 1,316,594 |
| 2026-09-09 | SCHMERTZLER MICHAEL | Open-market sale | 572 | $68.67 | 1,326,594 |
| 2026-09-09 | SCHMERTZLER MICHAEL | Open-market sale | 9,428 | $67.79 | 1,327,166 |
| 2026-08-27 | SCHMERTZLER MICHAEL | Open-market sale | 610 | $72.22 | 1,336,594 |
| 2026-08-27 | SCHMERTZLER MICHAEL | Open-market sale | 11,890 | $71.55 | 1,337,204 |
| 2026-08-26 | SCHMERTZLER MICHAEL | Open-market sale | 5,626 | $73.18 | 1,349,094 |
| 2026-08-26 | SCHMERTZLER MICHAEL | Open-market sale | 6,874 | $72.74 | 1,354,720 |
| 2026-08-20 | SCHMERTZLER MICHAEL | Open-market sale | 691 | $72.92 | 1,361,594 |
| 2026-08-20 | SCHMERTZLER MICHAEL | Open-market sale | 2,390 | $71.88 | 1,362,285 |
| 2026-08-20 | SCHMERTZLER MICHAEL | Open-market sale | 9,419 | $70.78 | 1,364,675 |
| 2026-08-19 | SCHMERTZLER MICHAEL | Open-market sale | 7,165 | $73.67 | 1,374,094 |
| 2026-08-19 | SCHMERTZLER MICHAEL | Open-market sale | 5,335 | $72.86 | 1,381,259 |
| 2026-08-17 | Boulding Mark Elliott | Option exercise (derivative) | 2,813 | $0.00 | 16,876 |
| 2026-08-17 | Boulding Mark Elliott | Open-market sale | 969 | $72.90 | 105,272 |
| 2026-08-17 | Boulding Mark Elliott | Open-market sale | 1,844 | $72.39 | 106,241 |
| 2026-08-17 | Boulding Mark Elliott | Option exercise | 2,813 | $25.69 | 108,085 |
| 2026-08-04 | Klein Matthew B. | Open-market sale | 10,292 | $68.57 | 383,868 |
| 2026-07-28 | Sollie-Zetlmayer Hege Elisabeth | — | — | — | 46,526 |
| 2026-07-28 | Sollie-Zetlmayer Hege Elisabeth | Grant / award (derivative) | 1,738 | $0.00 | 1,738 |
| 2026-07-28 | Sollie-Zetlmayer Hege Elisabeth | Grant / award (derivative) | 3,475 | $0.00 | 3,475 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.