Headquarters: Ridgefield, Conn.
Business: Refines crude oil into fuel and other products at St. Paul Park refinery; has 166 company-operated and 67 franchised SuperAmerica stores in Minnesota and Wisconsin; stake in Minnesota pipeline.
History: Acquired refinery, pipeline and stores from Marathon Oil Corp. in 2010; initial public offering of master limited partnership units in July 2012.
Ticker: NTI
![Attendees of Frostbike made their way through the convention Saturday at the Quality Bike Products campus in Minneapolis. ] (AARON LAVINSKY/STAR TRIBUNE) aaron.lavinsky@startribune.com Frostbike 2016 was held at the Quality Bike Products Campus on Saturday, Feb. 27, 2016 in Bloomington, Minn.](https://arc.stimg.co/startribunemedia/NH2BSHB74ND2V6GF2G2HI5X4MM.jpg?&w=252&ar=3:2&fit=crop)
