Total buying$00 buys
PTCT
PTC THERAPEUTICS, INC.
NasdaqHealthcarePharmaceutical Preparations
Insider activity for last month from 09/19 to 10/19.
How these metrics are calculated
Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total selling$1.23M8 sells
Net open-market−$1.23MBuying minus selling
Active insiders3Distinct reporting owners
Insider activity report
Calendar-month buckets within the selected date range
Latest filing: Oct 16, 2026
Open-market transaction mix · 8 transactions in the selected period
Code A includes awards, grants and other acquisitions; these are not open-market buys. A rolling period can include partial calendar months.
View exact monthly counts and disclosed values
| Month | Buys | Sells | Awards (A) | Buy value | Sell value | Net P/S value |
|---|---|---|---|---|---|---|
| Sep 2026 | 0 | 1 | 0 | $0 | $781k | -$781k |
| Oct 2026 | 0 | 7 | 0 | $0 | $452k | -$452k |
Distinct insiders active
Reporting-owner CIKs by month · peak Oct 2026 (2)Sep 2026Oct 2026
Largest insider activity
By absolute net disclosed value · current transaction page- SP-$647.2k
- SM-$307.5k
- BE-$55.8k
PTCT transaction history
Newest filings · 20 transactions per pageLatest insider transactions
Form 4 filings from last month.Filing-only signals
Deterministic matches in the selected period
Filing detail checks
Secondary metrics for the selected periodTransaction codes
By Form 4 transaction code in selected period16transactionstxns
- M · Option exercise · dominant8 · 50%
- S · Open-market sells8 · 50%
Activity by reported role
A joint filing can contribute to multiple rolesEVC9
Director7
Reported Holdings After
Separated by insider, security, and ownership type
Boulding Mark ElliottCommon Stock · Direct
105,272Oct 09, 2026
Schmertzler MichaelCommon Stock · Indirect · See footnote
1,291,594Oct 14, 2026
Boulding Mark ElliottStock Option (Right to Buy) · Direct
2,267Oct 09, 2026
Steele Glenn Jr Md PhdCommon Stock · Direct
22,500Sep 30, 2026
Steele Glenn Jr Md PhdStock Option (Right to Buy) · Direct
0Sep 30, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Current transaction page only · each cell is a filing date · buys green, sells redSep 19 → Oct 19
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PTC THERAPEUTICS, INC. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at PTC THERAPEUTICS, INC.?
SCHMERTZLER MICHAEL, Boulding Mark Elliott, STEELE GLENN JR MD PHD.
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Schmertzler Michael reported a sale on Oct 14, 2026 valued at $22.9k. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $1,234,565.71. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.