PTC THERAPEUTICS, INC. — Director's Dealing 2017

May 25, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PTC THERAPEUTICS, INC. (PTCT)
CIK: 0001070081
Period of Report: 2017-05-24

Reporting Person: Rothera Mark (Chief Commercial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-05-24	Common Stock	M	2000	$10.85	Acquired	33739	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-05-24	Stock Option (Right To Buy)	$10.85	M	2000	Disposed	2023-05-15	Common Stock (2000.0)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	9216	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right To Buy)	$10.85	2023-05-15	Common Stock (69227.0)	69227	Direct
Stock Option (Right To Buy)	$27.05	2024-01-27	Common Stock (65000.0)	65000	Direct
Stock Option (Right To Buy)	$51.0	2025-01-01	Common Stock (69550.0)	69550	Direct
Stock Option (Right To Buy)	$30.86	2026-01-03	Common Stock (70000.0)	70000	Direct
Stock Option (Right To Buy)	$11.23	2027-01-02	Common Stock (56000.0)	56000	Direct

Footnotes

F1: This transaction involved a bona fide gift of securities by the reporting person to a trust of which the reporting person's spouse is a beneficiary.

F2: This option was granted on May 15, 2013 and vests as follows: 25% of the shares underlying the option vested on December 31, 2013 and an additional 2.083% of the original number of shares underlying the option vesting monthly thereafter beginning on January 31, 2014.

F3: This option was granted on May 15, 2013 and vests over four years, with 25% of the shares underlying the option vested on May 15, 2014 and an additional 2.083% of the original number of shares underlying the option vesting monthly thereafter beginning on June 15, 2014.

F4: This option was granted on January 28, 2014, and vests over four years, with 25% of the shares underlying the option vested on January 1, 2015, and an additional 6.25% of the original number of shares underlying the option vesting at the end of each successive three-month period thereafter, beginning on April 1, 2015.

F5: This option was granted on January 2, 2015, and vests over four years, with 25% of the shares underlying the option vesting on January 1, 2016, and an additional 6.25% of the original number of shares underlying the option vesting at the end of each successive three-month period thereafter, beginning on April 1, 2016.

F6: This option was granted on January 4, 2016, and vests over four years, with 25% of the shares underlying the option vesting on January 4, 2017, and an additional 6.25% of the original number of shares underlying the option vesting at the end of each successive three-month period thereafter, beginning on April 4, 2017.

F7: This option was granted on January 3, 2017, and vests over four years, with 25% of the shares underlying the option vesting on January 3, 2018, and an additional 6.25% of the original number of shares underlying the option vesting at the end of each successive three-month period thereafter, beginning on April 3, 2018.