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Detailed Insider History for:
PTC THERAPEUTICS INC: PTCT
Price: 1/2/26 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$76.74 $87.50 $35.95 $6,161 80 1,484 0.0% 16.4% 105.18% 2.45%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Chemicals And Allied Products Pharmaceutical Preparations
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
1y
23
43%
1%
1
BOULDING MARK ELLIOTT
VP,LO
OS
$171,192
2,266
---
1/5/26
$74.92
$76.79
120,901
-1.8
D
R,10b
1/6/26 - 5:20:26 pm
2
    
 
BOULDING MARK ELLIOTT
VP,LO
OE
$89,326
2,266
---
1/5/26
---
$39.42
123,167
1.9
D
R,10b
1/6/26 - 5:20:26 pm
3
1y
3
100%
-38%
2
REEVE EMMA
DIR
OS
$55,784
734
---
1/5/26
---
$76.00
10,666
-6.4
D
R,10b
1/6/26 - 5:20:23 pm
4
    
 
REEVE EMMA
DIR
OE
$34,160
734
---
1/5/26
---
$46.54
11,400
6.9
D
R,10b
1/6/26 - 5:20:23 pm
5
    
 
SMITH MARY L
DIR
JB
---
4,000
---
1/2/26
---
---
21,813
22.5
D
R
1/6/26 - 5:23:46 pm
6
    
 
ALMSTEAD NEIL GREGORY
CTO,OO
JB
---
17,500
---
1/2/26
---
---
118,382
17.3
D
R
1/6/26 - 5:20:35 pm
7
    
 
ALMSTEAD NEIL GREGORY
CTO,OO
JB
---
520
---
1/2/26
---
---
6,956
8.1
I
R
1/6/26 - 5:20:35 pm
8
    
 
UTTER CHRISTINE MARIE
VP,CAO
JB
---
13,250
---
1/2/26
---
---
76,343
21.0
D
R
1/6/26 - 5:20:32 pm
9
    
 
GOLDEN LEE SCOTT
VP
JB
---
18,750
---
1/2/26
---
---
95,276
24.5
D
R
1/6/26 - 5:20:29 pm
10
    
 
PAUWELS ERIC
O
JB
---
20,000
---
1/2/26
---
---
90,630
28.3
D
R
1/6/26 - 5:20:27 pm
11
    
 
BOULDING MARK ELLIOTT
VP,LO
JB
---
17,000
---
1/2/26
---
---
120,901
16.4
D
R,10b
1/6/26 - 5:20:26 pm
12
    
 
REEVE EMMA
DIR
JB
---
4,000
---
1/2/26
---
---
10,666
60.0
D
R,10b
1/6/26 - 5:20:23 pm
13
    
 
ZELDIS JEROME B
DIR
JB
---
4,000
---
1/2/26
---
---
22,500
21.6
D
R
1/6/26 - 5:20:21 pm
14
    
 
YOUNG ALETHIA
DIR
JB
---
4,000
---
1/2/26
---
---
21,067
23.4
D
R
1/6/26 - 5:20:19 pm
15
    
 
SOUTHWELL DAVID P
DIR
JB
---
4,000
---
1/2/26
---
---
20,850
23.7
D
R
1/6/26 - 5:20:18 pm
16
    
 
OKEY STEPHANIE
DIR
JB
---
4,000
---
1/2/26
---
---
12,000
50.0
D
R
1/6/26 - 5:20:16 pm
17
    
 
JACOBSON ALLAN STEVEN
DIR
JB
---
4,000
---
1/2/26
---
---
21,451
22.9
D
R
1/6/26 - 5:20:13 pm
18
    
 
SCHMERTZLER MICHAEL
DIR
JB
---
8,000
---
1/2/26
---
---
163,266
5.2
D
R
1/6/26 - 5:20:11 pm
19
    
 
GRAVIER PIERRE
CFO
JB
---
20,000
---
1/2/26
---
---
92,449
27.6
D
R
1/6/26 - 5:20:09 pm
20
    
 
KLEIN MATTHEW B
CEO,DIR
JB
---
63,000
---
1/2/26
---
---
405,132
18.4
D
R
1/6/26 - 5:20:06 pm
21
    
 
STEELE GLENN JR MD PHD
DIR
OS
$916,200
12,000
---
1/2/26
---
$76.35
18,500
-39.3
D
R,10b
1/6/26 - 5:20:04 pm
22
    
 
STEELE GLENN JR MD PHD
DIR
JB
---
4,000
---
1/2/26
---
---
22,500
21.6
D
R,10b
1/6/26 - 5:20:04 pm
23
    
 
STEELE GLENN JR MD PHD
DIR
OE
$370,320
12,000
---
1/2/26
---
$30.86
30,500
64.9
D
R,10b
1/6/26 - 5:20:04 pm
24
    
 
KLEIN MATTHEW B
CEO,DIR
AS
$619,941
8,089
---
12/30/25
---
$76.64
341,875
-2.3
D
10b
1/2/26 - 5:20:05 pm
25
    
 
PAUWELS ERIC
O
OS
$1,584,350
20,508
---
12/19/25
$75.45
$78.33
70,373
-22.6
D
10b
12/23/25 - 5:15:06 pm
26
    
 
PAUWELS ERIC
O
OE
$1,336,186
20,508
---
12/19/25
$18.01
$66.49
90,178
29.4
D
10b
12/23/25 - 5:15:06 pm
27
    
 
PAUWELS ERIC
O
OS
$3,279,275
43,492
12/17/25
12/18/25
$75.00
$75.07
70,373
-38.2
D
10b
12/19/25 - 5:20:05 pm
28
    
 
PAUWELS ERIC
O
OE
$2,701,014
43,492
12/17/25
12/18/25
$18.01
$66.49
105,734
69.9
D
10b
12/19/25 - 5:20:05 pm
29
1y
3
100%
78%
2
SCHMERTZLER MICHAEL
DIR
OB
$740,640
24,000
---
12/16/25
---
$30.86
155,266
18.3
D
---
12/18/25 - 5:20:05 pm
30
1y
3
100%
-38%
2
REEVE EMMA
DIR
OS
$57,628
733
---
12/3/25
---
$78.62
6,666
-9.9
D
10b
12/5/25 - 5:20:04 pm
31
    
 
REEVE EMMA
DIR
OE
$34,114
733
---
12/3/25
---
$46.54
7,399
11.0
D
10b
12/5/25 - 5:20:04 pm
32
    
 
KLEIN MATTHEW B
CEO,DIR
AS
$271,052
3,428
---
12/2/25
---
$79.07
349,964
-1.0
D
R,10b
12/3/25 - 5:20:05 pm
33
    
 
KLEIN MATTHEW B
CEO,DIR
JB
---
15,625
---
12/1/25
---
---
353,392
4.6
D
R,10b
12/3/25 - 5:20:05 pm
34
1y
49
45%
4%
1
ALMSTEAD NEIL GREGORY
CTO,OO
OS
$6,001,932
71,928
---
11/25/25
$82.55
$85.34
100,625
-41.7
D
10b
11/26/25 - 5:25:06 pm
35
    
 
ALMSTEAD NEIL GREGORY
CTO,OO
OE
$2,211,679
71,928
---
11/25/25
$18.01
$33.02
148,249
94.2
D
10b
11/26/25 - 5:25:06 pm
36
1y
9
78%
-13%
1
JACOBSON ALLAN STEVEN
DIR
OS
$2,132,019
26,000
11/24/25
11/25/25
$80.13
$85.32
17,451
-59.8
D
10b
11/26/25 - 5:20:05 pm
37
    
 
JACOBSON ALLAN STEVEN
DIR
OE
$386,900
26,000
11/24/25
11/25/25
$11.23
$18.01
25,351
---
D
10b
11/26/25 - 5:20:05 pm
38
1y
49
45%
4%
1
ALMSTEAD NEIL GREGORY
CTO,OO
OS
$2,852,031
35,572
---
11/24/25
$80.14
$80.17
100,625
-26.1
D
10b
11/26/25 - 5:20:07 pm
39
    
 
ALMSTEAD NEIL GREGORY
CTO,OO
OE
$1,075,296
35,572
---
11/24/25
$18.01
$33.02
121,831
41.2
D
10b
11/26/25 - 5:20:07 pm
40
1y
3
100%
-38%
2
REEVE EMMA
DIR
OS
$795,000
10,000
---
11/21/25
---
$79.50
6,666
-60.0
D
10b
11/25/25 - 5:20:05 pm
41
    
 
REEVE EMMA
DIR
OE
$511,600
10,000
---
11/21/25
---
$51.16
16,666
150.0
D
10b
11/25/25 - 5:20:05 pm
42
    
 
OKEY STEPHANIE
DIR
JS
---
867
---
11/20/25
---
---
8,000
-9.8
D
---
11/21/25 - 5:20:05 pm
43
1y
23
43%
1%
1
BOULDING MARK ELLIOTT
VP,LO
OS
$213,687
2,812
---
11/17/25
$75.64
$77.18
103,901
-2.6
D
10b
11/19/25 - 5:20:04 pm
44
    
 
BOULDING MARK ELLIOTT
VP,LO
OE
$72,240
2,812
---
11/17/25
---
$25.69
106,713
2.7
D
10b
11/19/25 - 5:20:04 pm
45
1y
3
100%
-38%
2
REEVE EMMA
DIR
OS
$546,309
7,333
---
11/12/25
---
$74.50
6,666
-52.4
D
10b
11/14/25 - 5:20:05 pm
46
    
 
REEVE EMMA
DIR
OE
$341,278
7,333
---
11/12/25
---
$46.54
13,999
110.0
D
10b
11/14/25 - 5:20:05 pm
47
1y
3
100%
-38%
2
REEVE EMMA
DIR
OS
$1,088,787
15,666
---
10/30/25
---
$69.50
6,666
-70.2
D
10b
10/31/25 - 5:20:05 pm
48
    
 
REEVE EMMA
DIR
OE
$457,200
12,000
---
10/30/25
---
$38.10
18,666
180.0
D
10b
10/31/25 - 5:20:05 pm
49
1y
23
43%
1%
1
BOULDING MARK ELLIOTT
VP,LO
OS
$214,091
3,375
---
10/7/25
$62.89
$64.97
103,901
-3.1
D
10b
10/9/25 - 5:20:05 pm
50
    
 
BOULDING MARK ELLIOTT
VP,LO
OE
$128,588
3,375
---
10/7/25
---
$38.10
107,276
3.2
D
10b
10/9/25 - 5:20:05 pm
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