If Warrants are exercised, it is good for company as it receives Cash. The price point at which they exercised (say for e.g 22 cents or 31 cents), then that becomes the cost of pps for the person who exercised their warrants, so after restriction of 4 months these shares are now available for trading in open market.
Obviously, if you have purchased shares at 0.22 or 0.31, you won't sell it lower than those prices unless you want to cut your looses incase the PPS dips below your warrant exercised price.
Right now the price is at 0.37, so there is a chance that those who have shares converted at 0.22 or 0.31 can sell those to make 60 to 20% in profits if they want to.