Seattle Seahawks | 73,442 followers on LinkedIn. Proud to play for the greatest fans in the NFL, the 12s. Super Bowl XLVIII Champions. | The Seattle Seahawks joined the National Football League (NFL) in 1976 as an expansion team and have since won one Super Bowl (Super Bowl XLVIII), 11 division titles, and three conference championships. The club is headquartered at the Virginia Mason Athletic Center in Renton, Wash. and plays at Lumen Field in downtown Seattle. The Seahawks organization continues to be one of the strongest in the league, consistently ranking in the NFL's top 10 in numerous categories, including local and national fanbase, fan experience, retail, and digital engagement.