You can look it up on wikipedia https://en.wikipedia.org/wiki/Waves_platform, they have > 70 direct employees.

I don't know how many Waves they hold, themselves - but they did raise more BTC than ETH did with their ICO - and overall were the second biggest ICO after ETH. I guess it's not a large percentage of Waves in the scheme of ICO's and things - but they have lots of funding and are building up revenue streams, especially with their consultancy arm, Vostok.