blockholder

A shareholder with noticeable voting power (particularly one who needs to report his 5 % under Schedule 13D)

One who resides on a block of farmland assigned by the government for cultivation and, except for rates and taxes, exempt of seizure.

[…] an extensive flaxmill in the neighbourhood increases the blockholder’s opportunities for obtaining employment and for selling his produce. Thus the settlement appears to be making progress, and the degrees of that progression on the various blocks are an instructive illustration on the difference in individuals having the same opportunities to secure success.