Yes, it seems to be increasingly common for founders to sell a little stock personally in the course of a funding round. At least, it was till the market crashed.
I don't have enough data yet to say how the recession will affect this practice. But my guess is that if it did decrease, the decrease would be temporary. The long term trend is that founders are increasingly powerful. Which means they'll tend to get not just the option to sell stock (if they want to) but other things they want, like remaining CEO.
The middle to higher end of that range, maybe more. It only tends to happen in high valuation deals (usually later funding rounds) so a little stock is usually worth a lot.
