Matthew B. Klein - 30 Dec 2025 Form 4 Insider Report for PTC THERAPEUTICS, INC. (PTCT)

Signature
/s/ Avraham S. Adler, Attorney-in-Fact
Issuer symbol
PTCT
Transactions as of
30 Dec 2025
Net transactions value
-$619,941
Form type
4
Filing time
02 Jan 2026, 17:20:05 UTC
Previous filing
03 Dec 2025
Next filing
06 Jan 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Klein Matthew B. CHIEF EXECUTIVE OFFICER, Director C/O PTC THERAPEUTICS, INC., 500 WARREN CORPORATE CENTER DRIVE, WARREN /s/ Avraham S. Adler, Attorney-in-Fact 02 Jan 2026 0001808968

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction PTCT Common Stock Sale $619,941 -8,089 -2.3% $76.64 341,875 30 Dec 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 Represents shares automatically sold pursuant to an irrevocable sell to cover election to satisfy tax withholding obligations in connection with the vesting of 18,750 RSUs from a December 28, 2023 grant of 75,000 RSUs.