I see it. And a 24,000 share sell also. Both over 10 minutes after close. Guess the MMs held them to prop up the share price until the close? That seems shady to me.
My guess is that a bigger promoter is coming into this on Sunday-Monday (we've already seen three promoters in on GLDN this week). They (the promoters? Company?) probably already did their dump after hours and can just sit back and watch the fun on Monday. There will be a gap down in the morning, and then it should run pretty good for a while.