PTCT Form 144: 2,265 Shares Proposed Sale

PTCT notice under Rule 144 reporting proposed sale of 2,265 shares of Common Stock by issuance/option proceeds on 04/06/2026.

Rhea-AI Filing Summary

PTCT notice under Rule 144 reporting proposed sale of 2,265 shares of Common Stock by issuance/option proceeds on 04/06/2026. The filing also lists multiple prior disposals by Mark Boulding in early 2026, including sales of 1,739, 4,879, 4,033, 2,314, 2,813, 3,081, and 3,019 shares on specific dates.

Key Figures

Proposed sale: 2,265 shares Option grant date: 01/05/2023 Sale example: 1,739 shares +3 more

6 metrics

Proposed sale 2,265 shares Securities to be sold on 04/06/2026

Option grant date 01/05/2023 Option granted that relates to the proposed sale

Sale example 1,739 shares Sale on 01/06/2026 by Mark Boulding

Sale example 4,879 shares Sale on 01/07/2026 by Mark Boulding

Sale example 3,019 shares Sale on 02/19/2026 by Mark Boulding

Broker Fidelity Brokerage Services LLC Broker of record for the proposed sale

Key Terms

Rule 144, Option Granted, Securities To Be Sold

3 terms

Rule 144 regulatory

"144: Securities To Be Sold"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Option Granted financial

"Option Granted - 01/05/2023"

Securities To Be Sold regulatory

"144: Securities To Be Sold"

FAQ

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

What does PTCT's Form 144 report about proposed sales?

The Form 144 reports a proposed sale of 2,265 shares of Common Stock on 04/06/2026. The filing indicates the shares relate to an option granted on 01/05/2023 and the sale method is listed as cash.

Who is the selling party named in the PTCT Form 144?

Mark Boulding is identified as a recent seller in the filing with multiple dispositions in early 2026. The specific proposed 04/06/2026 sale is shown through Fidelity Brokerage Services LLC as the broker of record.

What recent sales by Mark Boulding does the filing list?

The filing lists sales on multiple dates: 1,739 (01/06/2026), 4,879 (01/07/2026), 4,033 (01/08/2026), 2,314 (01/09/2026), 2,813 (02/17/2026), 3,081 (02/18/2026), and 3,019 (02/19/2026) shares, with proceeds listed per sale.

Does the Form 144 disclose the option grant related to the sale?

Yes; the filing shows the proposed 04/06/2026 sale is tied to an Option Granted on 01/05/2023. The entry labels the transaction source as Issuer and the proceeds method as Cash.

Which broker is listed for the proposed PTCT sale?

The broker of record is Fidelity Brokerage Services LLC, listed with an address at 900 Salem Street, Smithfield, RI. The listing appears alongside the 2,265-share proposed sale scheduled for 04/06/2026.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 04/06/2026 - 04:13 PM EDT 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	2265	157282.93	82774730	04/06/2026	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	04/06/2026	Option Granted - 01/05/2023	Issuer			2265	04/06/2026	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	01/06/2026	1739	133811.88
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	01/07/2026	4879	377839.55
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	01/08/2026	4033	308761.28
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	01/09/2026	2314	180314.42
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	02/17/2026	2813	194906.02
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	02/18/2026	3081	213687.69
Mark Boulding 500 Warren Corporate Center Drive Warren NJ 07059	Common	02/19/2026	3019	209761.74

144: Remarks and Signature

Remarks
Date of Notice	04/06/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/10/2025
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/ Adam Gehring, 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)