Major brokerages, like Fidelity where I have my shares, are only counted as 1 investor even if they have thousands or more who're invested there. When it comes to voting, they vote as instructed by investors, and I'm uncertain precisely how unvoted shares are dealt with. It's very possible on a controversial vote where substantial resistance exists for a brokerage like Fidelity to vote roughly the same number of shares for and against an issue.
I believe you count as an individual investor if you insist your brokerage actually issue the shares to you. I've never done that, I understand that it makes selling a bit tougher, but I understand that it's possible.