Sund was the GM of the Seattle Supersonics from the 2001-02 to 2006-07 seasons. Seattle won 45, 40, 37, 52, 35, and 31 games (.488 winning percentage in total) in those seasons. They made the playoffs twice, losing to the Spurs in five games (3-2) in the first round of the 2001-02 playoffs and to the Spurs in six games in the Western Conference Semifinals (having beaten the Kings 4-1 in the first round) of the 2004-05 season.
A summary of the transactions (Signed Calvin Booth! Signed Jerome James! Drafted Robert Swift! Drafted Johan Petro! Drafted Saer Sene!) Sund made as GM of the Sonics is at HoopsHype.
UPDATE: Slightly more information about Sund.