Insider plans sale of 2,266 common shares

An insider has filed a notice to sell 2,266 shares of common stock through Fidelity Brokerage Services, with an aggregate market value of $172,216.00.

Rhea-AI Filing Summary

An insider has filed a notice to sell 2,266 shares of common stock through Fidelity Brokerage Services, with an aggregate market value of $172,216.00. The planned sale is targeted for 01/05/2026 on the NASDAQ market. These shares were acquired on 01/05/2026 via a stock option originally granted on 01/05/2023, and paid for in cash. In the past three months, the same person sold additional common shares in three transactions totaling several thousand shares, while total shares outstanding are 80,288,305.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many PTCT shares does the insider plan to sell under this notice?

The insider plans to sell 2,266 shares of common stock. The filing lists an aggregate market value of $172,216.00 for this planned sale, with trading expected on NASDAQ through Fidelity Brokerage Services on 01/05/2026.

How were the PTCT shares being sold under Rule 144 acquired?

The 2,266 shares planned for sale were acquired on 01/05/2026 through an option granted on 01/05/2023. The filing states the acquisition was from the issuer and that the purchase price was paid in cash on the acquisition date.

What recent PTCT share sales has the insider made in the last three months?

The insider sold 2,266 shares on 10/06/2025 for $147,453.15, 3,375 shares on 10/07/2025 for $214,094.81, and 2,812 shares on 11/17/2025 for $213,690.35, all listed as common stock transactions.

What is the total number of PTCT shares outstanding referenced in this filing?

The filing states that 80,288,305 shares of common stock are outstanding. This figure provides context for the planned 2,266-share sale and other recent transactions by the insider reported under Rule 144.

Which broker and exchange will handle the insider’s planned PTCT sale?

The planned sale will be executed through Fidelity Brokerage Services LLC, listed at 900 Salem Street, Smithfield, RI 02917. The shares are expected to trade on the NASDAQ exchange, according to the information provided in the notice.

What representation does the insider make about non-public information in this PTCT notice?

By signing the notice, the insider represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed, as required for sales relying on Rule 144.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 01/05/2026 - 02:00 PM EST Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001578852
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	PTC THERAPEUTICS, INC.
SEC File Number	001-35969
Address of Issuer	500 WARREN CORPORATE CENTER DRIVE WARREN NEW JERSEY 07059
Phone	9082227000
Name of Person for Whose Account the Securities are To Be Sold	Boulding Mark Elliott
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	2266	172216.00	80288305	01/05/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	01/05/2026	Option Granted - 01/05/2023	Issuer			2266	01/05/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	10/06/2025	2266	147453.15
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	10/07/2025	3375	214094.81
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	11/17/2025	2812	213690.35

144: Remarks and Signature

Remarks
Date of Notice	01/05/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/04/2024
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Mark Boulding
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)