PTC THERAPEUTICS, INC. (PTCT)
$70.59-$1.22 (-1.70%) Today
PTC Therapeutics Inc is a biopharmaceutical company that discovers, develops and commercializes clinically differentiated medicines that provide benefits to children and adults living with rare disorders. Its diversified therapeutic portfolio that includes several commercial products and product candidates in various stages of development, including discovery, research and clinical stages, focused on the development of new treatments for multiple therapeutic areas for rare diseases relating to neurology and metabolism. The company views its operations and manages its business in one operating segment: life science, which is focused on the discovery, development and commercialization of the company's clinically differentiated medicines that provide benefits to patients with rare disorders.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 51 | 263,903 | $19.75M |
| Grant or award | 4 | 11,213 | |
| Option exercise | 43 | 340,194 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
79 Form 4 filings on record, the earliest from Dec 4, 2024, newest first. Filing history page 1 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Michael Schmertzler - Director | Open-market sale | Common Stock | 6,874 | $72.74 | $500K | |
| Michael Schmertzler - Director | Open-market sale | Common Stock | 5,626 | $73.18 | $412K | |
| Michael Schmertzler - Director | Open-market sale | Common Stock | 11,890 | $71.55 | $851K | |
| Michael Schmertzler - Director | Open-market sale | Common Stock | 610 | $72.22 | $44K | |
| Michael Schmertzler - Director | Open-market sale | Common Stock | 5,335 | $72.86 | $389K | |
| Michael Schmertzler - Director | Open-market sale | Common Stock | 7,165 | $73.67 | $528K | |
| Michael Schmertzler - Director | Open-market sale | Common Stock | 9,419 | $70.78 | $667K | |
| Michael Schmertzler - Director | Open-market sale | Common Stock | 2,390 | $71.88 | $172K | |
| Michael Schmertzler - Director | Open-market sale | Common Stock | 691 | $72.92 | $50K | |
| Mark Elliott Boulding - Officer | Option exercise | Common Stock | 2,813 | $25.69 | $72K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 1,844 | $72.39 | $133K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 969 | $72.90 | $71K | |
| Mark Elliott Boulding - Officer | Option exercise | Stock Option (Right to Buy) | 2,813 | $0.00 | - | |
 Matthew B. Klein - Officer | Open-market sale | Common Stock | 10,292 | $68.57 | $706K | |
| Hege Elisabeth Sollie-Zetlmayer - Director | Grant or award | Common Stock | 4,000 | $0.00 | - | |
| Hege Elisabeth Sollie-Zetlmayer - Director | Grant or award | Common Stock | 2,000 | $0.00 | - | |
| Hege Elisabeth Sollie-Zetlmayer - Director | Grant or award | Stock Option (Right to Buy) | 3,475 | $0.00 | - | |
| Hege Elisabeth Sollie-Zetlmayer - Director | Grant or award | Stock Option (Right to Buy) | 1,738 | $0.00 | - | |
 Pierre Gravier - Officer | Open-market sale | Common Stock | 3,494 | $80.35 | $281K | |
| Mary L. Smith | Option exercise | Common Stock | 10,000 | $42.95 | $430K | |
| Mary L. Smith | Open-market sale | Common Stock | 10,000 | $90.00 | $900K | |
| Mary L. Smith | Option exercise | Common Stock | 5,834 | $42.95 | $251K | |
| Mary L. Smith | Open-market sale | Common Stock | 5,834 | $90.00 | $525K | |
| Mary L. Smith | Option exercise | Stock Option (Right to Buy) | 10,000 | $0.00 | - | |
| Mary L. Smith | Option exercise | Stock Option (Right to Buy) | 5,834 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 2,464 | $46.54 | $115K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 2,464 | $90.25 | $222K | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 2,464 | $0.00 | - | |
| Mark Elliott Boulding - Officer | Option exercise | Common Stock | 2,266 | $39.42 | $89K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 313 | $83.10 | $26K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 833 | $84.41 | $70K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 519 | $85.84 | $45K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 601 | $86.38 | $52K | |
| Mark Elliott Boulding - Officer | Option exercise | Common Stock | 2,813 | $46.54 | $131K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 387 | $83.10 | $32K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 1,036 | $84.41 | $87K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 645 | $85.84 | $55K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 745 | $86.38 | $64K | |
| Mark Elliott Boulding - Officer | Option exercise | Stock Option (Right to Buy) | 2,226 | $0.00 | - | |
| Mark Elliott Boulding - Officer | Option exercise | Stock Option (Right to Buy) | 2,813 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 811 | $38.10 | $31K | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 18,876 | $38.10 | $719K | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 18,876 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 2,474 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 24,613 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 426 | $85.28 | $36K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 385 | $86.34 | $33K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 8,786 | $85.35 | $750K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 10,090 | $86.32 | $871K | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 2,474 | $39.42 | $98K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 2,474 | $87.03 | $215K | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 24,613 | $39.42 | $970K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 3,956 | $87.17 | $345K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 11,369 | $89.03 | $1.01M | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 9,288 | $89.44 | $831K | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 811 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 412 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 7,718 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 412 | $38.10 | $16K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 412 | $85.23 | $35K | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 7,718 | $38.10 | $294K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 7,718 | $85.26 | $658K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 4,922 | $85.03 | $419K | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 1,001 | $38.10 | $38K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 582 | $85.24 | $50K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 419 | $86.39 | $36K | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 19,859 | $38.10 | $757K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 8,522 | $85.26 | $727K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 11,337 | $86.51 | $981K | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 100 | $39.42 | $4K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 100 | $87.00 | $9K | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 401 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 4,922 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 1,001 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 19,859 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 100 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 401 | $38.10 | $15K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 401 | $85.01 | $34K | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 4,922 | $38.10 | $188K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 11,619 | $81.21 | $944K | |
| Neil Gregory Almstead - Officer | Option exercise | Stock Option (Right to Buy) | 23,749 | $0.00 | - | |
| Neil Gregory Almstead - Officer | Option exercise | Common Stock | 23,749 | $25.69 | $610K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 12,130 | $80.61 | $978K | |
| Christine Marie Utter - Officer | Option exercise | Common Stock | 19,686 | $25.69 | $506K | |
| Christine Marie Utter - Officer | Open-market sale | Common Stock | 19,686 | $75.56 | $1.49M | |
| Christine Marie Utter - Officer | Option exercise | Stock Option (Right to Buy) | 19,686 | $0.00 | - | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 1,703 | $78.50 | $134K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 309 | $79.25 | $24K | |
| Mark Elliott Boulding - Officer | Option exercise | Stock Option (Right to Buy) | 8,510 | $0.00 | - | |
| Mark Elliott Boulding - Officer | Option exercise | Stock Option (Right to Buy) | 2,012 | $0.00 | - | |
| Mark Elliott Boulding - Officer | Option exercise | Common Stock | 8,510 | $46.54 | $396K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 6,600 | $78.50 | $518K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 1,850 | $79.24 | $147K | |
| Mark Elliott Boulding - Officer | Option exercise | Common Stock | 2,012 | $46.54 | $94K | |
 Eric Pauwels - Officer | Open-market sale | Common Stock | 3,711 | $75.00 | $278K | |
| Eric Pauwels - Officer | Option exercise | Common Stock | 17,566 | $18.01 | $316K | |
| Eric Pauwels - Officer | Open-market sale | Common Stock | 17,566 | $75.00 | $1.32M | |
| Eric Pauwels - Officer | Open-market sale | Stock Option (Right to Buy) | 17,566 | $0.00 | - | |
| Mark Elliott Boulding - Officer | Option exercise | Common Stock | 2,812 | $25.69 | $72K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 2,356 | $72.08 | $170K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 456 | $72.67 | $33K | |
| Mark Elliott Boulding - Officer | Option exercise | Stock Option (Right to Buy) | 2,812 | $0.00 | - | |
| Matthew B. Klein - Officer | Grant or award | Common Stock | 12,500 | $0.00 | - | |
| Matthew B. Klein - Officer | Open-market sale | Common Stock | 679 | $73.06 | $50K | |
| Matthew B. Klein - Officer | Open-market sale | Common Stock | 7,221 | $73.08 | $528K | |
| Matthew B. Klein - Officer | Open-market sale | Common Stock | 2,100 | $73.08 | $153K | |
| Matthew B. Klein - Officer | Open-market sale | Common Stock | 2,572 | $72.46 | $186K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 200 | $78.00 | $16K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 600 | $79.28 | $48K | |
| Mark Elliott Boulding - Officer | Option exercise | Common Stock | 800 | $46.54 | $37K | |
| Mark Elliott Boulding - Officer | Option exercise | Common Stock | 2,740 | $46.54 | $128K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 840 | $78.23 | $66K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 1,900 | $79.31 | $151K | |
| Mark Elliott Boulding - Officer | Option exercise | Stock Option (Right to Buy) | 2,740 | $0.00 | - | |
| Mark Elliott Boulding - Officer | Option exercise | Stock Option (Right to Buy) | 800 | $0.00 | - | |
| Matthew B. Klein - Officer | Open-market sale | Common Stock | 2,850 | $70.91 | $202K | |
| Mark Elliott Boulding - Officer | Option exercise | Common Stock | 2,265 | $39.42 | $89K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 822 | $68.91 | $57K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 1,443 | $69.75 | $101K | |
| Mark Elliott Boulding - Officer | Option exercise | Stock Option (Right to Buy) | 2,265 | $0.00 | - | |
| Lee Scott Golden - Officer | Open-market sale | Common Stock | 829 | $67.99 | $56K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 39,393 | $68.89 | $2.71M | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 12,530 | $69.50 | $871K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 80 | $70.30 | $6K | |
| Jessica Caroline Chutter | Grant or award | Common Stock | 4,000 | $0.00 | - | |
| Jessica Caroline Chutter | Grant or award | Common Stock | 3,333 | $0.00 | - | |
| Jessica Caroline Chutter | Grant or award | Stock Option (Right to Buy) | 3,475 | $0.00 | - | |
| Jessica Caroline Chutter | Grant or award | Stock Option (Right to Buy) | 2,896 | $0.00 | - | |
| Matthew B. Klein - Officer | Grant or award | Common Stock | 12,500 | $0.00 | - | |
| Matthew B. Klein - Officer | Open-market sale | Common Stock | 2,662 | $64.08 | $171K | |
| Stephanie Okey | Open-market sale | Common Stock | 1,167 | $70.00 | $82K | |
| Stephanie Okey | Option exercise | Common Stock | 14,000 | $33.63 | $471K | |
| Stephanie Okey | Open-market sale | Common Stock | 14,000 | $70.00 | $980K | |
| Stephanie Okey | Option exercise | Stock Option (Right to Buy) | 1,167 | $0.00 | - | |
| Stephanie Okey | Option exercise | Stock Option (Right to Buy) | 14,000 | $0.00 | - | |
| Stephanie Okey | Option exercise | Common Stock | 1,167 | $33.63 | $39K | |
| Stephanie Okey | Open-market sale | Common Stock | 6,333 | $63.38 | $401K | |
| Lee Scott Golden - Officer | Open-market sale | Common Stock | 10,000 | $63.38 | $634K | |
| Neil Gregory Almstead - Officer | Open-market sale | Common Stock | 3,989 | $63.38 | $253K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 588 | $68.54 | $40K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 1,629 | $69.82 | $114K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 212 | $68.54 | $15K | |
| Mark Elliott Boulding - Officer | Open-market sale | Common Stock | 590 | $69.82 | $41K |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Section Six Partners, L.P. | Affiliate of Director | 50,000 | $3.65M | View on EDGAR | |
| Michael Schmertzler | Director | 50,000 | $3.65M | View on EDGAR | |
| Boulding Mark Elliott | Officer | 2,813 | $202K | View on EDGAR |
PTC THERAPEUTICS, INC. (PTCT) had 16 insider filings in the last 90 days, with the most recent on 2026-08-28. The full record for PTCT runs to 79 Form 4 filings, the earliest from 2024-12-04. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of PTCT were filed in the last 90 days.
51 insider sales of PTCT were filed in the last 90 days, totaling $19.75M.
This page tracks PTCT Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
Real-time Form 4 alerts, AI-scored daily trade ideas and 10b5-1 plan flags.
