Neil Gregory Almstead - Oct 3, 2025 Form 4 Insider Report for PTC THERAPEUTICS, INC. (PTCT)

Role
CHIEF TECHNICAL OPS OFFICER
Signature
/s/ Avraham S. Adler, Attorney-in-Fact
Stock symbol
PTCT
Transactions as of
Oct 3, 2025
Transactions value $
-$1,935,677
Form type
4
Date filed
10/7/2025, 05:20 PM
Previous filing
Feb 21, 2025
Next filing
Nov 26, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Almstead Neil Gregory CHIEF TECHNICAL OPS OFFICER C/O PTC THERAPEUTICS, INC., 500 WARREN CORPORATE CENTER DRIVE, WARREN /s/ Avraham S. Adler, Attorney-in-Fact 2025-10-07 0001578850

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction PTCT Common Stock Options Exercise $106K +3.44K +3.42% $30.86 104K Oct 3, 2025 Direct F1, F2
transaction PTCT Common Stock Sale -$105K -1.61K -1.55% $65.46 102K Oct 3, 2025 Direct F1, F3
transaction PTCT Common Stock Sale -$117K -1.76K -1.72% $66.56 101K Oct 3, 2025 Direct F1, F4
transaction PTCT Common Stock Sale -$4.9K -73 -0.07% $67.16 101K Oct 3, 2025 Direct F1
transaction PTCT Common Stock Options Exercise $1.59M +51.6K +51.24% $30.86 152K Oct 3, 2025 Direct F1
transaction PTCT Common Stock Sale -$1.53M -23.4K -15.39% $65.45 129K Oct 3, 2025 Direct F1, F5
transaction PTCT Common Stock Sale -$1.59M -23.9K -18.53% $66.45 105K Oct 3, 2025 Direct F1, F6
transaction PTCT Common Stock Sale -$287K -4.28K -4.08% $67.15 101K Oct 3, 2025 Direct F1, F7
holding PTCT Common Stock 6.18K Oct 3, 2025 By Spouse F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction PTCT Stock Option (Right to Buy) Options Exercise $0 -3.44K -6.26% $0.00 51.6K Oct 3, 2025 Common Stock 3.44K $30.86 Direct F1, F8
transaction PTCT Stock Option (Right to Buy) Options Exercise $0 -51.6K -100% $0.00 0 Oct 3, 2025 Common Stock 51.6K $30.86 Direct F1, F8
* 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 This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the Reporting Person on December 10, 2024
F2 Includes 272 shares of common stock acquired under the Issuer's employee stock purchase plan for the period ended June 30, 2025.
F3 This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $65.00 to $65.99 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
F4 This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $66.15 to $67.03 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
F5 This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $65.00 to $65.99 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
F6 This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $66.00 to $66.99 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
F7 This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $67.00 to $67.33 per share. The Reporting Person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
F8 Currently exercisable.