Kammala jumla mai zuwa: Reinhart an haife shi ne a Arewacin Vancouver zuwa Theresa da Paul Reinhart. Mahaifinsa, Paul, dan wasan tsaron gida ne na National Hockey League (NHL), kuma yanzu shine mai ba da kuɗi da talla a kasuwar hannayen jari. Reinhart yana sanye da lambar rigar 23, lambar da mahaifinsa ya sa a NHL. Sam yana da 'yan'uwa biyu: Max da Griffin. An zaɓi Max a zagaye na uku a cikin 2010 NHL Entry Draft ta Calgary Flames kuma yana wasa a cikin ƙungiyar su. Sam ya buga wasa tare da Max a kan Ice's Ed Chynoweth Cup-championship team a cikin 2010<unk>11 Yammacin Hockey League (WHL) kakar wasa da kuma 2011<unk>12 kakar wasa. An zabi Griffin a matsayin na hudu a cikin
2012 da New York Islanders, kuma ya taka leda a kan Sam's Ice tare da Edmonton Oil Kings a cikin WHL tun 2011<unk>12.