In the Kelvin timeline, Starbase K-4 was a Federation space station, a K-class starbase in Starfleet service in the 2260s decade.
History and specifications[]
In 2263, the USS Endeavour visited Starbase K-4 after the Borg incursion of that year. While there, the starship was repaired, Captain Clark Terrell was given medical treatment, and the other surviving crewmembers of the USS Concord were reassigned. (TOS - Boldly Go comic: "Issue 6")