PTCT
PTC THERAPEUTICS, INC.
NASDAQ · Healthcare · Biotechnology · US
$61.53
+3.87%0
Insider buys (3m)
27
Insider sells (3m)
-$8.5M
Net value (3m)
-21.6%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Oct 16, 2026 | SCHMERTZLER MICHAEL · director | Sale | 2,118 | $60 |
| Oct 16, 2026 | SCHMERTZLER MICHAEL · director | Sale | 382 | $60 |
| Oct 13, 2026 | Boulding Mark Elliott · officer: EXEC. VP AND CLO | Sale | 192 | $64 |
| Oct 13, 2026 | Boulding Mark Elliott · officer: EXEC. VP AND CLO | M-Exempt | 192 | $39 |
| Oct 9, 2026 | SCHMERTZLER MICHAEL · director | Sale | 2,447 | $63 |
| Oct 9, 2026 | SCHMERTZLER MICHAEL · director | Sale | 53 | $64 |
| Oct 7, 2026 | Boulding Mark Elliott · officer: EXEC. VP AND CLO | M-Exempt | 435 | $39 |
| Oct 7, 2026 | Boulding Mark Elliott · officer: EXEC. VP AND CLO | Sale | 435 | $64 |
| Oct 7, 2026 | Boulding Mark Elliott · officer: EXEC. VP AND CLO | Sale | 1,638 | $64 |
| Oct 7, 2026 | Boulding Mark Elliott · officer: EXEC. VP AND CLO | M-Exempt | 1,638 | $39 |
| Oct 2, 2026 | STEELE GLENN JR MD PHD · director | Sale | 12,000 | $65 |
| Oct 2, 2026 | STEELE GLENN JR MD PHD · director | M-Exempt | 12,000 | $11 |
| Sep 18, 2026 | SCHMERTZLER MICHAEL · director | Sale | 376 | $68 |
| Sep 18, 2026 | SCHMERTZLER MICHAEL · director | Sale | 9,624 | $68 |
| Sep 18, 2026 | SCHMERTZLER MICHAEL · director | Sale | 2,994 | $67 |
| Sep 18, 2026 | SCHMERTZLER MICHAEL · director | Sale | 7,006 | $67 |
| Sep 11, 2026 | SCHMERTZLER MICHAEL · director | Sale | 572 | $69 |
| Sep 11, 2026 | SCHMERTZLER MICHAEL · director | Sale | 9,428 | $68 |
| Sep 11, 2026 | SCHMERTZLER MICHAEL · director | Sale | 10,000 | $67 |
| Aug 28, 2026 | SCHMERTZLER MICHAEL · director | Sale | 6,874 | $73 |
| Aug 28, 2026 | SCHMERTZLER MICHAEL · director | Sale | 5,626 | $73 |
| Aug 28, 2026 | SCHMERTZLER MICHAEL · director | Sale | 610 | $72 |
| Aug 28, 2026 | SCHMERTZLER MICHAEL · director | Sale | 11,890 | $72 |
| Aug 21, 2026 | SCHMERTZLER MICHAEL · director | Sale | 691 | $73 |
| Aug 21, 2026 | SCHMERTZLER MICHAEL · director | Sale | 2,390 | $72 |
| Aug 21, 2026 | SCHMERTZLER MICHAEL · director | Sale | 5,335 | $73 |
| Aug 21, 2026 | SCHMERTZLER MICHAEL · director | Sale | 7,165 | $74 |
| Aug 21, 2026 | SCHMERTZLER MICHAEL · director | Sale | 9,419 | $71 |
| Aug 19, 2026 | Boulding Mark Elliott · officer: EXEC. VP AND CLO | Sale | 1,844 | $72 |
| Aug 19, 2026 | Boulding Mark Elliott · officer: EXEC. VP AND CLO | M-Exempt | 2,813 | $26 |
Institutional positioning
13F filings over the trailing two quarters
New 137Increased 279Reduced 222Sold out 49
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 13,964,554 | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 12,948,717 | May 13, 2026 |
| RTW INVESTMENTS, LP | Unchanged | 7,746,415 | May 15, 2026 |
| RTW INVESTMENTS, LP | Unchanged | 7,746,415 | Aug 14, 2026 |
| Jupiter Topco LLC | New Position | 7,236,402 | Aug 14, 2026 |
| JANUS HENDERSON GROUP PLC | Increased | 7,193,433 | May 18, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 4,928,111 | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 4,804,594 | May 8, 2026 |
| STATE STREET CORP | Increased | 4,598,952 | Sep 22, 2026 |
| STATE STREET CORP | Increased | 4,346,519 | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 4,128,273 | Aug 14, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 3,942,610 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 3,739,127 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 3,676,256 | May 15, 2026 |
| TORONTO DOMINION BANK | Reduced | 3,025,963 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Oct 16, 2026