Google saves the day once again

Another option is a joint-stock company, known in the Czech Republic as an "Akciova Spolecnost" (referred to as an "a.s".). These forms of companies are generally only formed for real-estate for large investments with numerous investors.
Helps a bit. It's probably like saying in my company types they converted from s.p. to d.d.
Thats from private company to the one where anyone can buy its share on stock market.
This is an usual path of conversion when company gets big enough to evolve even further.