PTCT director sells 20,960 shares via option exercise

PTCT reported a Rule 144 notice showing the sale of 20,960 shares by Fidelity Brokerage Services LLC via a stock option exercise on 06/25/2026 for cash.

Rhea-AI Filing Summary

PTCT reported a Rule 144 notice showing the sale of 20,960 shares by Fidelity Brokerage Services LLC via a stock option exercise on 06/25/2026 for cash. The filing also lists earlier dispositions by Zheng Y. Almstead: 52,003 shares on 04/01/2026, 23,749 shares on 06/22/2026, and 5,323 shares on 06/24/2026, with disclosed proceeds for each sale. Shares outstanding are shown as 82,949,338 as of 06/25/2026.

Key Figures

Shares sold (current notice): 20,960 shares Proceeds - 04/01/2026 sale: $3,590,359.84 Proceeds - 06/22/2026 sale: $1,921,431.84 +2 more

5 metrics

Shares sold (current notice) 20,960 shares Stock option exercise on 06/25/2026

Proceeds - 04/01/2026 sale $3,590,359.84 52,003 shares sold on 04/01/2026

Proceeds - 06/22/2026 sale $1,921,431.84 23,749 shares sold on 06/22/2026

Proceeds - 06/24/2026 sale $452,591.58 5,323 shares sold on 06/24/2026

Shares outstanding 82,949,338 shares as of 06/25/2026

Key Terms

Rule 144, Stock Option Exercise, Proceeds, Brokerage

4 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.

Stock Option Exercise financial

"Common | 06/25/2026 | Stock Option Exercise"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Proceeds financial

"52003 | 3590359.84"

Brokerage market

"Fidelity Brokerage Services LLC 900 Salem Street"

A brokerage is a firm or online platform that carries out buy and sell orders for stocks, bonds and other investments on behalf of clients, and typically holds accounts, provides market data, trading tools and optional services such as research or margin lending. It matters to investors because the brokerage’s fees, speed of execution, available markets and safety of client assets directly affect investment costs, potential returns and how easily you can act on opportunities—think of it as the vehicle and driver that get your money where it needs to go.

FAQ

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

What did the PTCT Form 144 disclose about recent sales?

The Form 144 discloses a 20,960-share sale via stock option exercise on 06/25/2026. It also lists prior dispositions by Zheng Y. Almstead on 04/01/2026, 06/22/2026, and 06/24/2026 with proceeds shown for each.

Who sold the 20,960 PTCT shares reported on 06/25/2026?

The filing lists Fidelity Brokerage Services LLC as the broker for the 20,960-share transaction on 06/25/2026, identified as a stock option exercise settled for cash according to the notice.

How many shares outstanding does PTCT show in the filing?

The Form 144 shows 82,949,338 shares outstanding as of 06/25/2026. This figure appears on the securities information line in the excerpt and provides a context figure for reported dispositions.

What proceeds were reported for Zheng Y. Almstead's recent sales?

The excerpt reports proceeds of $3,590,359.84 for 52,003 shares on 04/01/2026, $1,921,431.84 for 23,749 shares on 06/22/2026, and $452,591.58 for 5,323 shares on 06/24/2026.

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

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Accepted by SEC EDGAR 06/25/2026 - 04:16 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	0001578850
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	Almstead Neil Gregory
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	20960	1801869.40	82949338	06/25/2026	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	06/25/2026	Stock Option Exercise	Issuer			20960	06/25/2026	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
Zheng Y. Almstead 500 Warren Corporate Center Drive Warren NJ 07059	Common	04/01/2026	52003	3590359.84
Zheng Y. Almstead 500 Warren Corporate Center Drive Warren NJ 07059	Common	06/22/2026	23749	1921431.84
Zheng Y. Almstead 500 Warren Corporate Center Drive Warren NJ 07059	Common	06/24/2026	5323	452591.58

144: Remarks and Signature

Remarks
Date of Notice	06/25/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/11/2025
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/ Emily Navaro, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Neil G. Almstead.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)