Look at the chart below the share price you are looking at and you will see the answer to your question. $4.10 is the closing price and $4.23 is the last after hours trade.
And then look at Landmark's post and see the after hour trades are mostly Odd Lot trades. Less than 100 shares, or a board lot.
************ The only bid and asks currently on TSX
LAST PRICE 5.5900
Bid / Lots 5.0500/ 5 Ask / Lots 8.0000/ 8
There is no Nasdaq Bid and Ask on my TD broker board