The plane apparently has 4 ejection seats. Two of the six were apparently in jump seats.
But, given the limited number of crashes and use of ejection seats, one has to wonder if it is even cost effective to have them in planes of that class. I do see their use in fighters, particularly carrier based.
I recall a crash out around Pecos from a Dyess Crew where the Terrain Following system failed. I believe they hit the side of a cliff and no ejection seats were used as it happened too quickly.
There was a crash just north of the runway at Dyess AFB in 1988 if I’m not mistaken. All four ejection seats worked.
If you google it you can see there’s been a handful of crashes with successful ejection seats use.