Can I call this push?

[4CardStraight]

If K9s is the bottom of his range, you should not be calling this push.

Hand 0: 55.243% 50.60% 04.65% 3649373 335381.00 { 77+, A7s+, K9s+, QTs+, JTs, ATo+, KJo+, QJo }
Hand 1: 44.757% 40.11% 04.65% 2893041 335391.50 { ATo }

If K9s is dead center of his range or if his range is 50% or more you probably should be calling this push (pushing 3 times in a row can certainly happen even with only pushing top 15% cards)

Hand 0: 45.037% 41.84% 03.20% 1934010 147975.00 { 55+, A2s+, K5s+, Q7s+, J8s+, T8s+, 98s, A7o+, K9o+, Q9o+, J9o+ }
Hand 1: 54.963% 51.77% 03.20% 2392983 147983.50 { ATo }

(And there is 300 in overlay, or like 8% in blinds, you are however calling off your whole stack, so your chips and chair are worth more than what you stand to gain)

Now, based on your read, which was it, and are you currently way better than the rest of the field (in which case you might muck even better cards than ATo here)