Where have they sent them and what have they done with them?
most likely to themselves!
(what else should be added to this list?)
there are so many things, e.g. in this case:
* coins part of txs verified in these first/last blocks
* first donations/payments to wherever, e.g. archive.org and WL
* this first pizza buy (many coins!)
* first regular salary pay (must exist, don't know about it)
...