Your picture shows 2 separate orders posted by 2 separate MM with funny/co-incidence similar size!
Could be one order broke into 2 separate orders routed through 2 separate MM or just one MM/seller front running or undercutting the other.
With a little buying pressure and this original 50k order from MM CSTI in the $0.39s eaten up .... the ASK is very thin and a quick jump into mid $0.40s is possible