Day Trader’s Aftermarket Lounge May 4, page-2

Hi all, a few small scalps today and was able to offload a hold at smaller loss than last week (nothing to get excited about!). Can I ask what happened here today with HCT the Bid was .160 and the offer .165 and there was a large # of shares on both the bid and sell side. Somehow a sale at .170 occurred ...I am quite confident there was ample supply for both the buy and the sell so I thought the highest this would go was .165 ..how did a market get created for 4768 shares at .170?