I don't know, those trades don't seem like retail, I mean there as the buy order that was for exactly 250k shares that hit 3 different ask prices, there is zero way for a retail trader to buy exactly 250k shares without knowing the prices it would execute at since all the blocks were not visible on the ask.
Same with the market type sells, this was the same type of action we saw before the recent volume surge with ASCM involved and flash sells with the bid then reloading