First time poster and first time trade this afternoon. Placed an...

First time poster and first time trade this afternoon.
Placed an order for 10000 @$1.345 with about half an hour to close of trade this afternoon.
Had about half the order filled and with minutes left decided to match my bid with the sales orders at $1.35 to complete my order with milliseconds to go.
By the time I returned to the screen showing depth of bids and offers there was a sale offer for about 9124 shares @$1.28 and a few others below the lowest buys at $1.35

WTF??????