Ptc Therapeutics PTCT Insider Ownership

NASDAQ PTCT
$69.94 -1.46 (-2.04%)
As of: Sep 4, 2026 · 11:48 AM EDT

Insider Holdings by Owner

2.67Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
0.0092%
0% pp QoQ
Shares Held by Insiders
8.00K
filed for Sep 2026
0.00% QoQ
Shares Outstanding
87.12Mn
87,115,369 shares
Direct Holdings
8.00K
Indirect: 0
Net Shares Traded (QoQ)
0
no net change in Sep 2026
Insiders Holding Shares
21
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Sep, 2026

PTCT's three largest insider shareholders as of August 29, 2026 are Michael Schmertzler (Director, 1.34Mn shares), Matthew B. Klein (Chief Executive Officer, 383.87K shares), Stuart Walter Peltz (Chief Executive Officer, 221.87K shares).

Form 4 Holdings

Insiders Holding PTCT

Insiders 21
Shares held 2.67Mn
Of outstanding 3.07%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Michael Schmertzler Director 0 1,336,594 1,336,594 50.0% 28 Aug, 2026
2 Matthew B. Klein Chief Executive Officer 383,868 0 383,868 14.4% 06 Aug, 2026
3 Stuart Walter Peltz Chief Executive Officer 166,962 54,903 221,865 8.3% 02 Feb, 2023
4 Mark Elliott Boulding Exec. Vp And Clo 105,272 0 105,272 3.9% 19 Aug, 2026
5 Pierre Gravier Chief Financial Officer 83,986 0 83,986 3.1% 16 Jul, 2026
6 Lee Scott Golden Evp Chief Medical Officer 79,115 0 79,115 3.0% 06 Apr, 2026
7 Eric Pauwels Chief Business Officer 73,411 0 73,411 2.7% 12 Jun, 2026
8 Christine Marie Utter Svp, Chief Accounting Officer 70,199 0 70,199 2.6% 22 Jun, 2026
9 Neil Gregory Almstead Chief Technical Ops Officer 60,299 0 60,299 2.3% 13 Jul, 2026
10 Hege Elisabeth Sollie-Zetlmayer Director 52,526 0 52,526 2.0% 30 Jul, 2026
11 Emily Luisa Hill Chief Financial Officer 38,925 0 38,925 1.5% 29 Mar, 2023
12 Glenn Jr Md Phd Steele Director 22,500 0 22,500 0.8% 06 Jan, 2026
13 Jerome B Zeldis Director 22,500 0 22,500 0.8% 06 Jan, 2026
14 Mary L. Smith Director 21,813 0 21,813 0.8% 13 Jul, 2026
15 Allan Steven Jacobson Director 21,451 0 21,451 0.8% 06 Jan, 2026
16 Alethia Young Director 21,067 0 21,067 0.8% 06 Jan, 2026
17 David P Southwell Director 20,850 0 20,850 0.8% 06 Jan, 2026
18 Emma Reeve Director 10,666 0 10,666 0.4% 06 Jan, 2026
19 William F. Jr. Bell Director 10,333 0 10,333 0.4% 16 Feb, 2024
20 Stephanie Okey Director 8,000 0 8,000 0.3% 12 Mar, 2026
21 Jessica Caroline Chutter Director 7,333 0 7,333 0.3% 26 Mar, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

4,150 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
26 Aug, 2026 Michael Schmertzler Director Disposed S 6,874 $72.74 $500.01K 1,354,720 Indirect
26 Aug, 2026 Michael Schmertzler Director Disposed S 5,626 $73.18 $411.71K 1,349,094 Indirect
27 Aug, 2026 Michael Schmertzler Director Disposed S 11,890 $71.55 $850.73K 1,337,204 Indirect
27 Aug, 2026 Michael Schmertzler Director Disposed S 610 $72.22 $44.05K 1,336,594 Indirect
19 Aug, 2026 Michael Schmertzler Director Disposed S 5,335 $72.86 $388.71K 1,381,259 Indirect
19 Aug, 2026 Michael Schmertzler Director Disposed S 7,165 $73.67 $527.85K 1,374,094 Indirect
20 Aug, 2026 Michael Schmertzler Director Disposed S 9,419 $70.78 $666.68K 1,364,675 Indirect
20 Aug, 2026 Michael Schmertzler Director Disposed S 2,390 $71.88 $171.79K 1,362,285 Indirect
20 Aug, 2026 Michael Schmertzler Director Disposed S 691 $72.92 $50.39K 1,361,594 Indirect
17 Aug, 2026 Mark Elliott Boulding Exec. Vp And Clo Acquired M 2,813 $25.69 $72.27K 108,085 Direct
17 Aug, 2026 Mark Elliott Boulding Exec. Vp And Clo Disposed S 1,844 $72.39 $133.49K 106,241 Direct
17 Aug, 2026 Mark Elliott Boulding Exec. Vp And Clo Disposed S 969 $72.90 $70.64K 105,272 Direct
17 Aug, 2026 Mark Elliott Boulding Exec. Vp And Clo Disposed M 2,813 $0.00 $0 16,876 Direct
04 Aug, 2026 Matthew B. Klein Chief Executive Officer Disposed S 10,292 $68.57 $705.72K 383,868 Direct
28 Jul, 2026 Hege Elisabeth Sollie-Zetlmayer Director Acquired A 4,000 $0.00 $0 50,526 Direct
28 Jul, 2026 Hege Elisabeth Sollie-Zetlmayer Director Acquired A 4,000 $0.00 $0 50,526 Direct
28 Jul, 2026 Hege Elisabeth Sollie-Zetlmayer Director Acquired A 2,000 $0.00 $0 52,526 Direct
28 Jul, 2026 Hege Elisabeth Sollie-Zetlmayer Director Acquired A 2,000 $0.00 $0 52,526 Direct
28 Jul, 2026 Hege Elisabeth Sollie-Zetlmayer Director Acquired A 3,475 $0.00 $0 3,475 Direct
28 Jul, 2026 Hege Elisabeth Sollie-Zetlmayer Director Acquired A 3,475 $0.00 $0 3,475 Direct