Presumably the shareholders of the Land-Buying Co will eventually subdivide the parcel amongst themselves and each will have his/her own title...
If so, then you have nothing to worry about. If not, then the banks will be very reluctant beacuse the value of your share [not your plot] in the company is difficult to establish.
Nothing is real unless it can be named; nothing has value unless it can be sold; money is worthless unless you spend it.