Under the Free Company menu you find the Activity tab which tells you what has been going on in the Free Company. New members that joined, who put up what GC buff, what your standing is with your current GC etc etc...

Could we not have FC chest transactions listed on the Activity as well?

Such a simple implementation would easily save players a lot of headache. This way we can better keep track of who puts what into the FC Chest and even better, know who takes what out.