United States Biotechnology & Medical Research

PTC Therapeutics Inc (PTCT)

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Over the past 90 days, PTC Therapeutics Inc. insiders have executed 72 transactions, all of which were sales totaling approximately $38.2 million. These divestments occurred following the company's recent earnings report. Key executives, including the CFO and Chief Technical Operations Officer, have been active sellers, reflecting a consistent trend of insider liquidation during this period.
Ticker: PTCT Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for PTC Therapeutics Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Planned sale 4 Aug 2026
Value US$4,441,850.16 | Price 390.03 | Shares 46,341 (-49.5%)
Proposed sale 4 Aug 2026
Value US$3,861,676.98 | Price 445.27 | Shares 51,873
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-06 2026-08-04 PlS Planned sale
3.0
Klein Matthew B.

CHIEF EXECUTIVE OFFICER

Executive Director
46,341 -49.5%
390.03
US$4,441,850 		46,341 -49.5% 390.03 US$4,441,850
2026-08-04 2026-08-04 PrS Proposed sale
3.0
Klein Matthew B.

Officer; Director

Executive Director
51,873
445.27
US$3,861,677 		51,873 445.27 US$3,861,677
2026-07-16 2026-07-14 PlS Planned sale
3.5
Gravier Pierre

CHIEF FINANCIAL OFFICER

Officer
38,121 -30.9%
347.92
US$4,157,297 		38,121 -30.9% 347.92 US$4,157,297
2026-07-14 2026-07-14 PrS Proposed sale
3.5
Gravier Pierre

Officer

Officer
3,494
80.35
US$280,733 		3,494 80.35 US$280,733
2026-07-13 2026-07-09 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
2,464 -3.9%
90.25
US$222,376 		2,464 -3.9% 90.25 US$222,376
2026-07-13 2026-07-09 PlS Planned sale
Smith Mary L.
Non-Executive Director
5,834 -21.1%
90.00
US$525,060 		5,834 -21.1% 90.00 US$525,060
2026-07-13 2026-07-09 PlS Planned sale
Smith Mary L.
Non-Executive Director
10,000 -31.4%
90.00
US$900,000 		10,000 -31.4% 90.00 US$900,000
2026-07-09 2026-07-09 PrS Proposed sale
3.3
Almstead Neil Gregory

Officer

Officer
2,464
90.25
US$222,368 		2,464 90.25 US$222,368
2026-07-09 2026-07-09 PrS Proposed sale
Smith Mary L.

Director

Non-Executive Director
15,834
90.00
US$1,425,060 		15,834 90.00 US$1,425,060
2026-07-08 2026-07-07 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
9,288 -13.3%
89.44
US$830,719 		9,288 -13.3% 89.44 US$830,719
2026-07-08 2026-07-07 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
11,369 -14.0%
89.03
US$1,012,182 		11,369 -14.0% 89.03 US$1,012,182
2026-07-08 2026-07-07 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
3,956 -4.7%
87.17
US$344,845 		3,956 -4.7% 87.17 US$344,845
2026-07-07 2026-07-07 PrS Proposed sale
3.3
Almstead Neil Gregory

Officer

Officer
24,613
88.88
US$2,187,696 		24,613 88.88 US$2,187,696
2026-07-08 2026-07-06 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
745 -0.7%
86.38
US$64,353 		745 -0.7% 86.38 US$64,353
2026-07-08 2026-07-06 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
645 -0.6%
85.84
US$55,367 		645 -0.6% 85.84 US$55,367
2026-07-08 2026-07-06 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
1,036 -1.0%
84.41
US$87,449 		1,036 -1.0% 84.41 US$87,449
2026-07-08 2026-07-06 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
387 -0.4%
83.10
US$32,160 		387 -0.4% 83.10 US$32,160
2026-07-08 2026-07-06 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
601 -0.6%
86.38
US$51,914 		601 -0.6% 86.38 US$51,914
2026-07-08 2026-07-06 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
519 -0.5%
85.84
US$44,551 		519 -0.5% 85.84 US$44,551
2026-07-08 2026-07-06 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
833 -0.8%
84.41
US$70,314 		833 -0.8% 84.41 US$70,314
2026-07-08 2026-07-06 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
313 -0.3%
83.10
US$26,010 		313 -0.3% 83.10 US$26,010
2026-07-08 2026-07-06 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
2,474 -3.9%
87.03
US$215,312 		2,474 -3.9% 87.03 US$215,312
2026-07-08 2026-07-06 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
10,090 -14.3%
86.32
US$870,969 		10,090 -14.3% 86.32 US$870,969
2026-07-08 2026-07-06 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
8,786 -11.1%
85.35
US$749,885 		8,786 -11.1% 85.35 US$749,885
2026-07-08 2026-07-06 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
385 -0.6%
86.34
US$33,241 		385 -0.6% 86.34 US$33,241
2026-07-08 2026-07-06 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
426 -0.7%
85.28
US$36,329 		426 -0.7% 85.28 US$36,329
2026-07-06 2026-07-06 PrS Proposed sale
3.3
Almstead Neil Gregory

Officer

Officer
22,161
86.00
US$1,905,797 		22,161 86.00 US$1,905,797
2026-07-06 2026-07-06 PrS Proposed sale
3.4
Boulding Mark Elliott

Officer

Officer
5,079
84.14
US$427,322 		5,079 84.14 US$427,322
2026-06-30 2026-06-26 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
7,718 -11.4%
85.26
US$658,037 		7,718 -11.4% 85.26 US$658,037
2026-06-30 2026-06-26 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
412 -0.7%
85.23
US$35,115 		412 -0.7% 85.23 US$35,115
2026-06-26 2026-06-26 PrS Proposed sale
3.3
Almstead Neil Gregory

Officer

Officer
8,130
85.26
US$693,146 		8,130 85.26 US$693,146
2026-06-26 2026-06-25 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
100 -0.2%
87.00
US$8,700 		100 -0.2% 87.00 US$8,700
2026-06-26 2026-06-25 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
11,337 -15.9%
86.51
US$980,764 		11,337 -15.9% 86.51 US$980,764
2026-06-26 2026-06-25 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
8,522 -10.7%
85.26
US$726,586 		8,522 -10.7% 85.26 US$726,586
2026-06-26 2026-06-25 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
419 -0.7%
86.39
US$36,197 		419 -0.7% 86.39 US$36,197
2026-06-26 2026-06-25 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
582 -1.0%
85.24
US$49,610 		582 -1.0% 85.24 US$49,610
2026-06-25 2026-06-25 PrS Proposed sale
3.3
Almstead Neil Gregory

Officer

Officer
20,960
85.97
US$1,801,869 		20,960 85.97 US$1,801,869
2026-06-26 2026-06-24 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
4,922 -7.6%
85.03
US$418,518 		4,922 -7.6% 85.03 US$418,518
2026-06-26 2026-06-24 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
401 -0.7%
85.01
US$34,089 		401 -0.7% 85.01 US$34,089
2026-06-24 2026-06-24 PrS Proposed sale
3.3
Almstead Neil Gregory

Officer

Officer
5,323
85.03
US$452,592 		5,323 85.03 US$452,592
2026-06-24 2026-06-22 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
11,619 -16.2%
81.21
US$943,579 		11,619 -16.2% 81.21 US$943,579
2026-06-24 2026-06-22 PlS Planned sale
3.3
Almstead Neil Gregory

CHIEF TECHNICAL OPS OFFICER

Officer
12,130 -14.5%
80.61
US$977,799 		12,130 -14.5% 80.61 US$977,799
2026-06-22 2026-06-22 PrS Proposed sale
3.3
Almstead Neil Gregory

Officer

Officer
23,749
80.91
US$1,921,433 		23,749 80.91 US$1,921,433
2026-06-22 2026-06-22 PrS Proposed sale
3.3
Almstead Neil Gregory

Officer

Officer
23,749
80.91
US$1,921,433 		23,749 80.91 US$1,921,433
2026-06-22 2026-06-17 PlS Planned sale
3.3
Utter Christine Marie

SVP, CHIEF ACCOUNTING OFFICER

Officer
19,686 -21.9%
75.56
US$1,487,474 		19,686 -21.9% 75.56 US$1,487,474
2026-06-22 2026-06-17 PlS Planned sale
3.3
Utter Christine Marie

SVP, CHIEF ACCOUNTING OFFICER

Officer
19,686 -21.9%
75.56
US$1,487,474 		19,686 -21.9% 75.56 US$1,487,474
2026-06-22 2026-06-17 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
309 -0.3%
79.25
US$24,488 		309 -0.3% 79.25 US$24,488
2026-06-22 2026-06-17 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
309 -0.3%
79.25
US$24,488 		309 -0.3% 79.25 US$24,488
2026-06-22 2026-06-17 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
1,703 -1.6%
78.50
US$133,686 		1,703 -1.6% 78.50 US$133,686
2026-06-22 2026-06-17 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
1,703 -1.6%
78.50
US$133,686 		1,703 -1.6% 78.50 US$133,686
2026-06-22 2026-06-17 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
1,850 -1.7%
79.24
US$146,594 		1,850 -1.7% 79.24 US$146,594
2026-06-22 2026-06-17 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
1,850 -1.7%
79.24
US$146,594 		1,850 -1.7% 79.24 US$146,594
2026-06-22 2026-06-17 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
6,600 -5.8%
78.50
US$518,100 		6,600 -5.8% 78.50 US$518,100
2026-06-22 2026-06-17 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
6,600 -5.8%
78.50
US$518,100 		6,600 -5.8% 78.50 US$518,100
2026-06-17 2026-06-17 PrS Proposed sale
3.4
Boulding Mark Elliott

Officer

Officer
10,522
78.65
US$827,607 		10,522 78.65 US$827,607
2026-06-17 2026-06-17 PrS Proposed sale
3.3
Utter Christine Marie

Officer

Officer
19,686
75.56
US$1,487,474 		19,686 75.56 US$1,487,474
2026-06-12 2026-06-10 PlS Planned sale
3.4
Pauwels Eric

CHIEF BUSINESS OFFICER

Officer
17,566 -19.3%
75.00
US$1,317,450 		17,566 -19.3% 75.00 US$1,317,450
2026-06-12 2026-06-10 PlS Planned sale
3.4
Pauwels Eric

CHIEF BUSINESS OFFICER

Officer
3,711 -4.8%
75.00
US$278,325 		3,711 -4.8% 75.00 US$278,325
2026-06-10 2026-06-10 PrS Proposed sale
3.4
Pauwels Eric

Officer

Officer
21,277
75.00
US$1,595,775 		21,277 75.00 US$1,595,775
2026-05-19 2026-05-15 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
456 -0.4%
72.67
US$33,138 		456 -0.4% 72.67 US$33,138
2026-05-19 2026-05-15 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
2,356 -2.2%
72.08
US$169,820 		2,356 -2.2% 72.08 US$169,820
2026-05-15 2026-05-15 PrS Proposed sale
3.4
Boulding Mark Elliott

Officer

Officer
2,812
72.45
US$203,729 		2,812 72.45 US$203,729
2026-05-15 2026-05-14 S Sale
3.0
Klein Matthew B.

CHIEF EXECUTIVE OFFICER

Executive Director
2,572 -0.6%
72.46
US$186,367 		2,572 -0.6% 72.46 US$186,367
2026-05-15 2026-05-14 S Sale
3.0
Klein Matthew B.

CHIEF EXECUTIVE OFFICER

Executive Director
2,100 -0.5%
73.08
US$153,468 		2,100 -0.5% 73.08 US$153,468
2026-05-15 2026-05-14 S Sale
3.0
Klein Matthew B.

CHIEF EXECUTIVE OFFICER

Executive Director
7,221 -1.8%
73.08
US$527,711 		7,221 -1.8% 73.08 US$527,711
2026-05-15 2026-05-14 S Sale
3.0
Klein Matthew B.

CHIEF EXECUTIVE OFFICER

Executive Director
679 -0.2%
73.06
US$49,608 		679 -0.2% 73.06 US$49,608
2026-05-14 2026-05-14 PrS Proposed sale
3.0
Klein Matthew B.

Officer; Director

Executive Director
2,572
72.46
US$186,360 		2,572 72.46 US$186,360
2026-05-14 2026-05-14 PrS Proposed sale
3.0
Klein Matthew B.

Officer; Director

Executive Director
10,000
73.08
US$730,769 		10,000 73.08 US$730,769
2026-05-12 2026-05-08 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
600 -0.6%
79.28
US$47,568 		600 -0.6% 79.28 US$47,568
2026-05-12 2026-05-08 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
200 -0.2%
78.00
US$15,600 		200 -0.2% 78.00 US$15,600
2026-05-12 2026-05-08 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
1,900 -1.8%
79.31
US$150,689 		1,900 -1.8% 79.31 US$150,689
2026-05-12 2026-05-08 PlS Planned sale
3.4
Boulding Mark Elliott

EXEC. VP AND CLO

Officer
840 -0.8%
78.23
US$65,713 		840 -0.8% 78.23 US$65,713
2026-05-08 2026-05-08 PrS Proposed sale
3.4
Boulding Mark Elliott

Officer

Officer
3,540
78.97
US$279,565 		3,540 78.97 US$279,565
2026-04-23 2026-04-21 S Sale
3.0
Klein Matthew B.

CHIEF EXECUTIVE OFFICER

Executive Director
2,850 -0.7%
70.91
US$202,094 		2,850 -0.7% 70.91 US$202,094
2026-04-21 2026-04-21 PrS Proposed sale
3.0
Klein Matthew B.

Officer; Director

Executive Director
2,850
70.94
US$202,171 		2,850 70.94 US$202,171
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