late crossing , page-7

According to my source, the following are details of the final NMS transactions today -

NMS - Neptune Marine Services Ltd
Trade Date Time Quantity Price
30 Nov 2007 4:20:13 PM 100,000 1.180
30 Nov 2007 4:10:50 PM 3,730 1.135
30 Nov 2007 4:10:50 PM 8,770 1.135
30 Nov 2007 4:10:50 PM 4,500 1.135
30 Nov 2007 4:10:50 PM 3,000 1.135
30 Nov 2007 3:59:35 PM 3,000 1.140
30 Nov 2007 3:59:21 PM 7,254 1.140
30 Nov 2007 3:59:21 PM 700 1.140
30 Nov 2007 3:59:21 PM 1,569 1.140
30 Nov 2007 3:59:21 PM 477 1.140

I wonder why 100k were (probably) crossed at 4.20 pm for $1.18 when the previous trade, 3,730, was executed at 4.10 pm for $1.135.

Could have been an early crossing that wasn't processed until very late in the day.

Any other ideas ??

Any significance ??