Whistle blower suit

I currently work for a company involved in a whistle blower suit, where the DOJ recently got involved. The alleged activity, which was in the form of kickbacks to staff, and off label selling were going on in company "A" before company "B" purchased the company.

Company B has never tolerated the behavior company A tolerated. Company A had a toxic culture, where reps could make a lot of $ selling and if you didn't make your number you were at very high risk of being fired. To make matters worse company A offered A LOT of stock to reps. If you got fired, you would lose all un-vested shares. There was a huge incentive to cheat.

Here's the question? I know of a couple cases of kickbacks in the forms of jewelry and gift cards to restaurants going to staff for helping pull through a case or recommending the drug to the doc for a patient. I know of reps taking MDs out to dinner on their own $. It was worth it when huge $ was on the line.

I also know of management pushing off label selling. Some of the management is still with company B.

Will the DOJ go after reps and management or do they just want the Company B to settle and pay a big fine? I'm fortunately clean, but have friends who were pushing the edge. I wouldn't mind being part of a suit, but don't want to see friends punished for the toxic culture that company A pushed.