Ptc Therapeutics, Inc. (PTCT) Insider Ownership

Historic Insider Ownership Trends

Ptc Therapeutics's top three insider shareholders as of May 30, 2026 are Matthew B. Klein (Chief Executive Officer, 396.92K shares), Stuart Walter Peltz (Chief Executive Officer, 221.87K shares), Michael Schmertzler (Director, 163.27K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Michael Schmertzler - 163,266 0 06 Jan, 2026
Eric Pauwels Chief Business Officer 77,122 0 20 Feb, 2026
Jerome B Zeldis - 22,500 0 06 Jan, 2026
Dawn Svoronos - 29,017 0 10 Jun, 2022
Neil Gregory Almstead Chief Technical Ops Officer 60,137 0 03 Apr, 2026
Mark Elliott Boulding Exec. Vp And Clo 105,212 0 08 Apr, 2026
Stuart Walter Peltz Chief Executive Officer 166,962 54,903 02 Feb, 2023
Allan Steven Jacobson - 21,451 0 06 Jan, 2026
Lee Scott Golden Evp Chief Medical Officer 79,944 0 09 Mar, 2026
Christine Marie Utter Svp, Chief Accounting Officer 70,199 0 20 Feb, 2026
Stephanie Okey - 8,000 0 12 Mar, 2026
Emily Luisa Hill Chief Financial Officer 38,925 0 29 Mar, 2023
Matthew B. Klein Chief Executive Officer 396,920 0 13 Mar, 2026
Mary L. Smith - 21,813 0 06 Jan, 2026
Alethia Young - 21,067 0 06 Jan, 2026
William F. Jr. Bell - 10,333 0 16 Feb, 2024
Pierre Gravier Chief Financial Officer 87,318 0 20 Feb, 2026
Jessica Caroline Chutter - 7,333 0 26 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
06 Apr, 2026 Mark Elliott Boulding Common Stock A 2,265 $39.42 107,477 D M
06 Apr, 2026 Mark Elliott Boulding Common Stock D 822 $68.91 106,655 D S
06 Apr, 2026 Mark Elliott Boulding Common Stock D 1,443 $69.75 105,212 D S
06 Apr, 2026 Mark Elliott Boulding Stock Option (Right to Buy) D 2,265 $0.00 6,798 D M
01 Apr, 2026 Neil Gregory Almstead Common Stock D 39,393 $68.89 72,747 D S
01 Apr, 2026 Neil Gregory Almstead Common Stock D 12,530 $69.50 60,217 D S
01 Apr, 2026 Neil Gregory Almstead Common Stock D 80 $70.30 60,137 D S
24 Mar, 2026 Jessica Caroline Chutter Common Stock A 4,000 $0.00 4,000 D A
24 Mar, 2026 Jessica Caroline Chutter Common Stock A 3,333 $0.00 7,333 D A
24 Mar, 2026 Jessica Caroline Chutter Stock Option (Right to Buy) A 3,475 $0.00 3,475 D A
24 Mar, 2026 Jessica Caroline Chutter Stock Option (Right to Buy) A 2,896 $0.00 2,896 D A
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 Lee Scott Golden Common Stock D 10,000 $63.38 79,944 D S