Stephanie Okey - 10 Mar 2026 Form 4 Insider Report for PTC THERAPEUTICS, INC. (PTCT)

Reporting relationship: Director
Issuer ticker: PTCT
Reported as of: 10 Mar 2026
Net transaction value: -$1,061,690
SEC form: 4
Accepted by SEC: 12 Mar 2026, 17:20:05 UTC
Prior SEC filing: 09 Mar 2026
Next SEC filing: 18 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Avraham S. Adler, Attorney-in-Fact

Key filing fact

Stephanie Okey filed Form 4 for PTC THERAPEUTICS, INC. (PTCT) on 12 Mar 2026.

Key facts

This page summarizes Stephanie Okey's Form 4 filing for PTC THERAPEUTICS, INC. (PTCT).
6 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 12 Mar 2026, 17:20.

Change

Previous filing in this sequence was filed on 09 Mar 2026.
Current net transaction value: -$1,061,690.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001742616 Primary reporting owner

Okey Stephanie

Relationship: Director
Address: C/O PTC THERAPEUTICS, INC., 500 WARREN CORPORATE CENTER DRIVE, WARREN
Signature: /s/ Avraham S. Adler, Attorney-in-Fact
Signature date: 12 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

PTCT transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,167
Change %: +15%
Price: $33.63^*
Shares after: 9,167
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1

PTCT transaction

Common Stock

Sale

Transaction value: $81,690
Shares: -1,167
Change %: -13%
Price: $70.00
Shares after: 8,000
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1

PTCT transaction

Common Stock

Options Exercise

Transaction value
Shares: +14,000
Change %: +175%
Price: $33.63^*
Shares after: 22,000
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1

PTCT transaction

Common Stock

Sale

Transaction value: $980,000
Shares: -14,000
Change %: -64%
Price: $70.00
Shares after: 8,000
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

PTCT transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -1,167
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 10 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,167
Exercise price: $33.63
Footnotes: F1, F2

PTCT transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -14,000
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 10 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 14,000
Exercise price: $33.63
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 2 footnotes

Footnote F1

This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the reporting person on November 24, 2025.

Footnote F2

Currently exercisable.