Mathieu Guyot-Sionnest
Mathieu Guyot-Sionnest Bonhams
7601 W. Sunset Boulevard
Los Angeles, United States 90046
Work +1 323 436 5450

Mathieu Guyot-Sionnest joined Bonhams Los Angeles as a Motorcycle Specialist in August 2019. Born and raised in Paris, France, Mathieu was introduced to the classic vehicle's world early in life, accompanying his father to various classic car events and races, like Le Mans Classic. When he was finishing his master's degree in International Business, he decided to open a restoration and preservation motorcycle shop just outside Paris where he expanded his motorcycle knowledge and network. After moving to Los Angeles, Mathieu started writing for various motorcycle websites and blogs, sourcing classic vehicles for French clients, and took part in the organization of motorcycle events.
After just a few weeks at Bonhams, Mathieu participated in the second year of the Collectors' Motorcycles auction at the Barber Museum where he notably took care of various French clients who bought some of the most valuable bikes consigned.
Mathieu is an active classic car racer with an International FFSA/FIA license, classic motorcycle racer with AHRMA and WERA, and member of the AMCA.

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