Sec Form 4 Filing - ALDRICH RICHARD @ PTC THERAPEUTICS, INC. - 2015-06-08

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED 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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person ALDRICH RICHARD 2. Issuer Name and Ticker or Trading Symbol PTC THERAPEUTICS, INC. [ PTCT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O PTC THERAPEUTICS, INC., 100 CORPORATE COURT 3. Date of Earliest Transaction (MM/DD/YY) 06/08/2015 (Street) SOUTH PLAINFIELD, NJ07080 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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) Code V Amount (A) or (D) Price Common Stock 06/08/2015 M( 1 ) 7,000 A $ 10.85 7,000 D Common Stock 06/08/2015 S( 1 ) 6,896 D $ 55.65 ( 2 ) 104 D Common Stock 06/08/2015 S( 1 ) 104 D $ 56.05 ( 3 ) 0 D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (Right to Buy) $ 10.85 06/08/2015 M( 1 ) 7,000 ( 4 ) 06/09/2025 Common Stock 7,000 $ 0 13,000 D Stock Option (Right to Buy) $ 27.05 01/28/2015 01/27/2024 Common Stock 10,000 10,000 D Stock Option (Right to Buy) $ 51 01/02/2016 01/01/2025 Common Stock 12,000 12,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other ALDRICH RICHARD C/O PTC THERAPEUTICS, INC. 100 CORPORATE COURT SOUTH PLAINFIELD, NJ07080 X Signatures /s/ Colleen Diver Johnson, attorney-in-fact 06/10/2015 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The transactions reported in this Form 4 were effected pursuant to a written Rule 10b5-1 plan adopted by the reporting person. ( 2 )This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $55.05 to $56.04 per share. The reporting person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. ( 3 )This price represents the weighted average price of sale transactions that were executed in multiple trades at prices ranging from $56.05 to $56.08 per share. The reporting person hereby undertakes, upon request by the SEC staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. ( 4 )This option was granted on May 15, 2013 and vests over three years, with 8.33% of the shares underlying the option vested on August 15, 2013 and an additional 8.33% of the original number of shares underlying the option vesting at the end of each successive three-month period thereafter.

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).

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