John Sebastian Thörn

John Sebastian Thörn



+1 332 345 3915    |   [email protected]

Based in the New York office, John Sebastian brings both his technical knowledge and his lifelong passion for commercial aviation to Alton’s clients.


Prior to joining as an associate at Alton, John Sebastian was an intern in the New York office where he leveraged his industry knowledge and analytical skills to help evaluate an airline bankruptcy, prepare extensive analysis for M&A diligence cases, and feasibility studies. In addition to his experience with Alton, John Sebastian has worked on projects and internships with various management consulting firms.


John Sebastian earned a Bachelor of Business Administration from the Mendoza College of Business at the University of Notre Dame, majoring in Business Analytics. He is a native English speaker and conversational in Swedish.