STOCK TITAN

PTC Therapeutics (PTCT) CBO sells shares under 10b5-1 trading plan

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

PTC Therapeutics chief business officer Eric Pauwels exercised stock options and sold shares in pre-planned trades. On June 10, 2026, he exercised options to acquire 17,566 shares of Common Stock at $18.01 per share, then executed open-market sales totaling 21,277 shares at $75.00 per share. Following these transactions, he held 73,411 shares of Common Stock directly. The trades were carried out under a written Rule 10b5-1 plan adopted on February 25, 2026, indicating they were pre-scheduled rather than timed discretionarily.

Positive

  • None.

Negative

  • None.
Insider Pauwels Eric
Role CHIEF BUSINESS OFFICER
Sold 38,843 shs ($1.60M)
Type Security Shares Price Value
Sale Stock Option (Right to Buy) 17,566 $0.00 --
Sale Common Stock 3,711 $75.00 $278K
Exercise Common Stock 17,566 $18.01 $316K
Sale Common Stock 17,566 $75.00 $1.32M
Holdings After Transaction: Stock Option (Right to Buy) — 0 shares (Direct, null); Common Stock — 73,411 shares (Direct, null)
Footnotes (1)
  1. This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the Reporting Person on February 25, 2026. Currently exercisable.
Shares sold 21,277 shares Common Stock sold on June 10, 2026 at $75.00
Sale price $75.00 per share Open-market sales of Common Stock on June 10, 2026
Options exercised 17,566 shares Stock options exercised into Common Stock on June 10, 2026
Option exercise price $18.01 per share Exercise price of stock option (Right to Buy)
Shares held after transactions 73,411 shares Direct Common Stock ownership following June 10, 2026 trades
Net share change 38,843 shares disposed Net-sell direction per transaction summary
Rule 10b5-1 plan regulatory
"This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the Reporting Person on February 25, 2026."
A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.
open-market sale financial
"transaction_action: open-market sale; transaction_code_description: Sale in open market or private transaction"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
Stock Option (Right to Buy) financial
"security_title: Stock Option (Right to Buy)"
derivative security financial
"transaction_code_description: Exercise or conversion of derivative security"
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
Common Stock financial
"security_title: Common Stock"
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Pauwels Eric

(Last)(First)(Middle)
C/O PTC THERAPEUTICS, INC.
500 WARREN CORPORATE CENTER DRIVE

(Street)
WARREN NEW JERSEY 07059

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
PTC THERAPEUTICS, INC. [ PTCT ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
CHIEF BUSINESS OFFICER
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/10/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock06/10/2026S(1)3,711D$7573,411D
Common Stock06/10/2026M(1)17,566A$18.0190,977D
Common Stock06/10/2026S(1)17,566D$7573,411D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$18.0106/10/2026S(1)17,566 (2)01/02/2028Common Stock17,566$00D
Explanation of Responses:
1. This transaction was effected pursuant to a written Rule 10b5-1 plan adopted by the Reporting Person on February 25, 2026.
2. Currently exercisable.
/s/ Avraham S. Adler, Attorney-in-Fact06/12/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did PTCT executive Eric Pauwels report?

Eric Pauwels reported option exercises and share sales in PTC Therapeutics stock. On June 10, 2026, he exercised options for 17,566 shares at $18.01, then sold 21,277 shares at $75.00 in open-market trades under a pre-arranged Rule 10b5-1 plan.

How many PTC Therapeutics (PTCT) shares did the CBO sell and at what price?

The chief business officer sold 21,277 shares of PTC Therapeutics Common Stock. These open-market sales occurred on June 10, 2026 at a reported price of $75.00 per share, as disclosed in the Form 4 insider transaction data for Eric Pauwels.

What stock options did Eric Pauwels exercise in PTC Therapeutics (PTCT)?

Eric Pauwels exercised stock options covering 17,566 shares of PTC Therapeutics Common Stock. The options carried an exercise price of $18.01 per share and were described as currently exercisable, with the related option position reduced to zero after this transaction.

How many PTC Therapeutics (PTCT) shares does Eric Pauwels hold after the Form 4 transactions?

After the reported transactions, Eric Pauwels directly holds 73,411 shares of PTC Therapeutics Common Stock. This post-transaction holding reflects his remaining position following the June 10, 2026 option exercise and related open-market share sales disclosed in the Form 4.

Were the PTCT insider share sales by Eric Pauwels under a Rule 10b5-1 plan?

Yes, the share sales were executed under a written Rule 10b5-1 trading plan. A footnote states the transactions occurred pursuant to a plan adopted on February 25, 2026, meaning the trades were pre-scheduled rather than timed opportunistically by the executive.

What does the derivative transaction in Eric Pauwels’ PTCT Form 4 represent?

The derivative transaction represents a stock option linked to 17,566 underlying PTCT shares with an $18.01 exercise price. On June 10, 2026, Pauwels exercised this currently exercisable option, leaving zero remaining derivative shares outstanding tied to that particular award.