PTCT insider sells shares via Form 144

PTCT reported Form 144 transactions showing sales of Common stock by Matthew Klein and a restricted stock vesting.

Rhea-AI Filing Summary

PTCT reported Form 144 transactions showing sales of Common stock by Matthew Klein and a restricted stock vesting. The filing lists three sales by Matthew Klein: 7,371 shares on 02/18/2026 for $511,227.50, 2,662 shares on 03/12/2026 for $170,572.44, and 2,850 shares on 04/21/2026 for $202,171.31. The excerpt also shows 2,572 shares vested as restricted stock on 05/13/2026 reported as compensation.

Insights

Insider Transactions Analyst

Form 144 lists routine insider sales and a compensation vesting event.

The filing records three reported sales by Matthew Klein totaling $883,971.25 across 02/18/2026, 03/12/2026, and 04/21/2026

These entries appear as standard Form 144 disclosures; the filing also records 2,572 shares vesting as restricted stock on 05/13/2026. Cash‑flow treatment and any broader impact on outstanding shares are not stated in the provided excerpt.

Key Figures

Sale - 02/18/2026: 7,371 shares Sale - 03/12/2026: 2,662 shares Sale - 04/21/2026: 2,850 shares +2 more

5 metrics

Sale - 02/18/2026 7,371 shares sale by Matthew Klein for $511,227.50 on 02/18/2026

Sale - 03/12/2026 2,662 shares sale by Matthew Klein for $170,572.44 on 03/12/2026

Sale - 04/21/2026 2,850 shares sale by Matthew Klein for $202,171.31 on 04/21/2026

Restricted Stock Vesting 2,572 shares Restricted stock vesting recorded as compensation on 05/13/2026

Aggregate reported proceeds (sum of listed amounts) $883,971.25 Aggregate of the three listed sale proceeds in the excerpt

Key Terms

Restricted Stock Vesting, Form 144, Compensation

3 terms

Restricted Stock Vesting financial

"Restricted Stock Vesting | Issuer | 2572 | 05/13/2026"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Form 144 regulatory

"CONTENT METADATA: form_type: "144""

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Compensation financial

"2572 | 05/13/2026 | Compensation"

FAQ

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

What sales does the PTCT Form 144 disclose?

The filing discloses three sales by Matthew Klein: 7,371 shares on 02/18/2026 for $511,227.50, 2,662 shares on 03/12/2026 for $170,572.44, and 2,850 shares on 04/21/2026 for $202,171.31. These amounts are listed verbatim in the excerpt.

Did PTCT report any equity vesting in the filing?

Yes. The excerpt shows 2,572 shares listed under Restricted Stock Vesting with an effective date of 05/13/2026, and the transaction is labeled as Compensation in the table.

Who is the reporting person named in the PTCT excerpt?

The reporting person shown is Matthew Klein with an address at 500 Warren Corporate Center Drive, Warren, NJ. His sales and the associated share and dollar amounts are listed in the excerpt.

Does the filing state how proceeds are treated or who receives them?

The provided excerpt does not specify proceeds recipients or uses. The sales rows list gross amounts for each sale but do not state whether proceeds go to the seller, the issuer, or another party.

Are the transaction dates and dollar amounts provided in the filing?

Yes. Each sale row includes a transaction date and an aggregate dollar amount: 02/18/2026 $511,227.50, 03/12/2026 $170,572.44, and 04/21/2026 $202,171.31, as shown in the excerpt.

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

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Accepted by SEC EDGAR 05/14/2026 - 03:09 PM 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	0001808968
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	Klein Matthew B.
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
Relationship to Issuer	Director

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	2572	186360.43	82949338	05/14/2026	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	05/13/2026	Restricted Stock Vesting	Issuer			2572	05/13/2026	Compensation

* 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
Matthew Klein 500 Warren Corporate Center Drive Warren NJ 07059	Common	02/18/2026	7371	511227.50
Matthew Klein 500 Warren Corporate Center Drive Warren NJ 07059	Common	03/12/2026	2662	170572.44
Matthew Klein 500 Warren Corporate Center Drive Warren NJ 07059	Common	04/21/2026	2850	202171.31

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	05/14/2026
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/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Matthew Klein
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)