exhibit 10. 1 ptc services agreement this agreement is made as of april 22, 2016 ( the “ effective date ” ) between ptc therapeutics, inc. ( “ ptc ” ) and spiegel consulting llc ( the “ consultant ” ). whereas, robert j. spiegel m. d., facp ( “ dr. spiegel ” ), consultant ’ s principal, has served as an employee of ptc until the effective date, under the employment agreement dated as of january 23, 2014 between ptc and the consultant ( the “ employment agreement ” ) ; whereas, the parties mutually desire to transition dr. spiegel to a consultant role for ptc as of the effective date, in accordance with section 2. e. of the employment agreement, and so the employment agreement is being terminated by separate document effective as of the effective date of this agreement ; and wheras, the purpose of this agreement is to confirm the parties ’ understanding with respect to ( i ) consultant ’ s rendering consulting services to ptc in exchange for the consideration as further described in this agreement, and ( ii ) consultant ’ s obligations to protect information and property which is confidential and proprietary to ptc. now therefore, ptc and consultant agree as follows : services consultant shall perform the following services for ptc ( the “ services ” ), ensuring that dr. spiegel will be available and perform services on a schedule equivalent to 2. 5 full - time days per week ( adjustable subject to the good - faith agreement of the parties ), to fulfill all obligations of consultant hereunder : serve as an advisor / consultant for ptc, performing tasks reasonably requested by ptc in connection with his area of expertise, including without limitation : · represent ptc in meetings with health and regulatory authorities, scientific meetings, and kol interactions. · support ptc ’ s dmd & cf regulatory filing and launch activities. · work with ptc ’ s med affairs, commercial, and business development groups to identify high impact activities. · continue to ‘ mentor ’ and support tuyen ong as cmo · continue to chair ptc ’ s ptc596 team and serve as ptc ’ s internal oncology expert. · provide input on and assist with execution of ptc ’ s clinical and regulatory strategy related to translarnatm ( ataluren ). consultant shall also provide such other services as the parties may mutually agree. consultant represents that dr