The Thunder were founded in 1967 as the Seattle SuperSonics as one of two franchises that joined the NBA in the 1967–68 season.
The SuperSonics moved to Oklahoma City after the 2007–08 season.
The records from the decades the team was in Seattle are still attached to the Oklahoma City history, but will be transferred back to a new Seattle SuperSonics team when and if NBA expansion there is approved.
Overall, the Thunder have qualified for the NBA playoffs on ten occasions after being relocated from Seattle (22 times as the SuperSonics).
Note: Statistics are correct as of the conclusion of the 2023–24 NBA season.