Why should they. There is absolutely nothing to be gained. Doctors aren't going to prescribe more if sales are good/bad. Patients won't be swayed either way. So why? So day-traders can use the information to increase the volatility of the stock? No thanks.
If the numbers are high, the shorts won't believe them.
If the numbers are low, then big deal, it is a new drug.
Nothing to be gained from a corporate perspective at all.