There are no after hours trades in pinks, so you are correct on that. A T trade is a trade that was not recorded during session hours. In this case, I suspect a MM did not want anyone to see it, and did not want to influence the price with it, when the market got a glimpse of it. Manipulation at its finest, and very bullish. Some MM wanted a lot of shares for himself or a client, and did not want to spook anyone. It was probably a complication of several trades, the volume of which, by law, had to be tallied into the final. 66mm shares would have spiked the pps, and that was trying to be avoided. So.....a good inside look at a very bullish maneuver.