PTCT
PTC Therapeutics (PTCT)
NASDAQ
$62.95-$0.09 (-0.14%)
Price as of Oct 22, 2026 7:30 PM EDT
  • $5.2B
    Market Cap
  • -5.63%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
16.73%
14.0M
+1.0M (+7.27%)
Jun 30, 2026
VANGUARD GROUP INC
10.55%
8.8M
+514,204 (+5.84%)
Dec 31, 2025
WELLINGTON MANAGEMENT CO LLP
9.77%
8.2M
-611,780 (-7.50%)
Dec 31, 2021
BLACKROCK FUNDING, INC. /DE
9.46%
7.9M
-84,412 (-1.07%)
Dec 31, 2024
BLACKROCK INC.
9.31%
7.8M
+207,054 (+2.66%)
Jun 30, 2024
RTW INVESTMENTS, LP
9.28%
7.7M
0 (0.00%)
Jun 30, 2026
N/A
8.67%
7.2M
+7.2M (+100.00%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions1.6B (56.33%)
  • Mutual Funds1.2B (43.46%)
  • Insiders5.9M (0.21%)
  • Other0 (0.00%)

Insider Transactions

  • 0.21% (5.9M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 13
    Number of InsiderSelling (last 12 months)
  • $2.4B
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
SCHMERTZLER MICHAEL
Sell
Oct 14, 2026
$126,063.36
2,118
$59.52
1.3M
SCHMERTZLER MICHAEL
Sell
Oct 14, 2026
$22,973.48
382
$60.14
1.3M
Boulding Mark Elliott
EXEC. VP AND CLO
Exempt
Oct 09, 2026
$0.00
192
$0.00
2,267
Boulding Mark Elliott
EXEC. VP AND CLO
Exempt
Oct 09, 2026
$7,568.64
192
$39.42
105,464
Boulding Mark Elliott
EXEC. VP AND CLO
Sell
Oct 09, 2026
$12,337.92
192
$64.26
105,272
SCHMERTZLER MICHAEL
Sell
Oct 07, 2026
$155,090.86
2,447
$63.38
1.3M
SCHMERTZLER MICHAEL
Sell
Oct 07, 2026
$3,389.35
53
$63.95
1.3M
STEELE GLENN JR MD PHD
Exempt
Sep 30, 2026
$0.00
12,000
$0.00
0
STEELE GLENN JR MD PHD
Exempt
Sep 30, 2026
$134,760.00
12,000
$11.23
34,500
STEELE GLENN JR MD PHD
Sell
Sep 30, 2026
$781,920.00
12,000
$65.16
22,500
SCHMERTZLER MICHAEL
Sell
Sep 17, 2026
$652,795.92
9,624
$67.83
1.3M
SCHMERTZLER MICHAEL
Sell
Sep 17, 2026
$25,737.20
376
$68.45
1.3M
SCHMERTZLER MICHAEL
Sell
Sep 16, 2026
$199,340.52
2,994
$66.58
1.3M
SCHMERTZLER MICHAEL
Sell
Sep 16, 2026
$471,854.10
7,006
$67.35
1.3M
SCHMERTZLER MICHAEL
Sell
Sep 10, 2026
$673,400.00
10,000
$67.34
1.3M
SCHMERTZLER MICHAEL
Sell
Sep 09, 2026
$639,124.12
9,428
$67.79
1.3M
SCHMERTZLER MICHAEL
Sell
Sep 09, 2026
$39,279.24
572
$68.67
1.3M
SCHMERTZLER MICHAEL
Sell
Aug 20, 2026
$666,676.82
9,419
$70.78
1.4M
SCHMERTZLER MICHAEL
Sell
Aug 20, 2026
$171,793.20
2,390
$71.88
1.4M
SCHMERTZLER MICHAEL
Sell
Aug 20, 2026
$50,387.72
691
$72.92
1.4M
SCHMERTZLER MICHAEL
Sell
Aug 19, 2026
$388,708.10
5,335
$72.86
1.4M
SCHMERTZLER MICHAEL
Sell
Aug 19, 2026
$527,845.55
7,165
$73.67
1.4M
Boulding Mark Elliott
EXEC. VP AND CLO
Exempt
Aug 17, 2026
$0.00
2,813
$0.00
16,876
Boulding Mark Elliott
EXEC. VP AND CLO
Exempt
Aug 17, 2026
$72,265.97
2,813
$25.69
108,085
Boulding Mark Elliott
EXEC. VP AND CLO
Sell
Aug 17, 2026
$133,487.16
1,844
$72.39
106,241
Boulding Mark Elliott
EXEC. VP AND CLO
Sell
Aug 17, 2026
$70,640.10
969
$72.90
105,272
Klein Matthew B.
CHIEF EXECUTIVE OFFICER
Sell
Aug 04, 2026
$705,722.44
10,292
$68.57
383,868
Sollie-Zetlmayer Hege Elisabeth
Award
Jul 28, 2026
$0.00
3,475
$0.00
3,475
Sollie-Zetlmayer Hege Elisabeth
Award
Jul 28, 2026
$0.00
1,738
$0.00
1,738
Sollie-Zetlmayer Hege Elisabeth
Award
Jul 28, 2026
$0.00
4,000
$0.00
50,526