PTC THERAPEUTICS, INC._November 3, 2026
0001070081false00010700812026-11-032026-11-03

​

​

UNITED STATES

​

SECURITIES AND EXCHANGE COMMISSION

​

WASHINGTON, D.C. 20549

​

FORM 8-K

​

CURRENT REPORT

​

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

​

Date of Report (Date of earliest event reported): November 3, 2026

​

PTC THERAPEUTICS, INC.

​

(Exact Name of Company as Specified in Charter)

​

​

​

​

​

​

Delaware

  ​ ​ ​

001-35969

  ​ ​ ​

04-3416587

(State or Other Jurisdiction

​

(Commission

​

(IRS Employer

of Incorporation)

​

File Number)

​

Identification No.)

​

​

​

​

​

​

500 Warren Corporate Center Drive

​

  ​ ​ ​

​

Warren, NJ

​

​

07059

(Address of Principal Executive Offices)

​

​

(Zip Code)

​

Registrant’s telephone number, including area code: (908) 222-7000

​

Not applicable

(Former Name or Former Address, if Changed Since Last Report)

​

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

​

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

​

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

​

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

​

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

​

Securities registered pursuant to Section 12(b) of the Act:

​

​

​

​

​

​

Title of each class

  ​ ​ ​

Trading Symbol(s)

  ​ ​ ​

Name of each exchange on which registered

Common Stock, $0.001 par value per share

​

PTCT

​

Nasdaq Global Select Market

​

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

​

Emerging growth company ☐

​

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

​

​

​

​

Item 7.01. Regulation FD Disclosure.

On November 3, 2026, PTC Therapeutics, Inc. (the “Company”) issued a press release announcing that its Board of Directors (the “Board”) authorized a share repurchase program. The press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K (this “Report”) and is incorporated by reference into this Item 7.01.

The information in this Item 7.01, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing. All website addresses given in this Report or incorporated herein by reference are for information only and are not intended to be an active link or to incorporate any website information into this Report.

Item 8.01. Other Information.

On November 3, 2026, the Company issued a press release announcing that its Board authorized a share repurchase program under which the Company may repurchase up to $500.0 million of the Company’s common stock, par value $0.001 per share (the “Common Stock”).

Share repurchases may be made from time to time at management's discretion through a variety of methods, such as open-market transactions including pre-set trading plans, privately negotiated transactions, accelerated share repurchases, and other transactions in accordance with applicable securities laws.

Information regarding any share repurchases will be available in the Company’s periodic reports on Form 10-Q and Form 10-K filed with the Securities and Exchange Commission as required by the applicable rules of the Exchange Act.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

​

​

​

Exhibit No.

  ​ ​ ​

Description

99.1

​

Press Release, dated November 3, 2026 issued by PTC Therapeutics, Inc.

104

​

The cover page from this Current Report on Form 8-K, formatted in Inline XBRL

​

​

​

​

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Report to be signed on its behalf by the undersigned hereunto duly authorized.

​

​

​

​

PTC Therapeutics, Inc.

​

​

Date: November 3, 2026

By:

/s/ Pierre Gravier

​

Name: 

Pierre Gravier

​

Title:

Chief Financial Officer

​

Exhibit 99.1

Graphic

PTC Therapeutics Board of Directors Authorizes $500 Million

Share Repurchase Program

WARREN, N.J., Nov. 3, 2026 – PTC Therapeutics, Inc., (NASDAQ: PTCT) today announced that its Board of Directors has authorized a share repurchase program under which PTC may repurchase up to $500 million of the Company’s outstanding shares of common stock, subject to market conditions.

“The share repurchase program reflects our deep conviction in the strength of the Company and the prospects for near- and long-term growth,” said Matthew B. Klein, M.D., Chief Executive Officer. “We are investing in PTC at a time when our shares provide a compelling opportunity while still maintaining the financial flexibility to support existing programs and pursue potential value creative business development transactions.”

Under the authorization, share repurchases may be made from time to time at management's discretion through a variety of methods, such as open-market transactions including pre-set trading plans, privately negotiated transactions, accelerated share repurchases, and other transactions in accordance with applicable securities laws.

About PTC Therapeutics, Inc.

PTC is a global biopharmaceutical company dedicated to the discovery, development and commercialization of clinically differentiated medicines for children and adults living with rare disorders. PTC is advancing a robust and diversified pipeline of transformative medicines as part of its mission to provide access to best-in-class treatments for patients with unmet medical needs. The company's strategy is to leverage its scientific expertise and global commercial infrastructure to optimize value for patients and other stakeholders. To learn more about PTC, please visit www.ptcbio.com and follow on LinkedIn, X, Facebook and Instagram.

​

​


​

For more information please contact:

Investors:

Ellen Cavaleri

+1 (615) 618-6228

ecavaleri@ptcbio.com

Media:

Jeanine Clemente

+1 (908) 912-9406

jclemente@ptcbio.com

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. All statements contained in this release, other than statements of historic fact, are forward-looking statements, including statements relating to our share repurchase program, including the timing, amount, and methods of any share repurchases; PTC's strategy, future operations, future financial position, future revenues, projected costs; and the objectives of management. Other forward-looking statements may be identified by the words, "guidance," "plan," "anticipate," "believe," "estimate," "expect," "intend," "may," "target," "potential," "will," "would," "could," "should," "continue," "aim," and similar expressions.

PTC's actual results, performance or achievements could differ materially from those expressed or implied by forward-looking statements it makes as a result of a variety of risks and uncertainties, including those related to: the outcome of pricing, coverage and reimbursement negotiations with third party payors for PTC's products or product candidates that PTC commercializes or may commercialize in the future; expectations with respect to our share repurchase program; significant business effects, including the effects of industry, market, economic, political or regulatory conditions; changes in tax and other laws, regulations, rates and policies; the eligible patient base and commercial potential of PTC's products and product candidates; PTC's scientific approach and general development progress; the sufficiency of PTC's cash resources and its ability to obtain adequate financing in the future for its foreseeable and unforeseeable operating expenses and capital expenditures; and the factors discussed in the "Risk Factors" section of PTC's most recent Annual Report on Form 10-K, as well as any updates to these risk factors filed

​

​


​

from time to time in PTC's other filings with the SEC. You are urged to carefully consider all such factors.

As with any pharmaceutical under development, there are significant risks in the development, regulatory approval and commercialization of new products. There are no guarantees that any product will receive or maintain regulatory approval in any territory, or prove to be commercially successful.

The forward-looking statements contained herein represent PTC's views only as of the date of this press release and PTC does not undertake or plan to update or revise any such forward-looking statements to reflect actual results or changes in plans, prospects, assumptions, estimates or projections, or other circumstances occurring after the date of this press release except as required by law.

​