The announcement. When a company announces that it's being acquired or bought out, it almost always will be at a premium to the stock's recent trading price. But depending on how the deal is being paid for, how long it's expected to take to close, and any speculation about a competing offer, a few things may happen.
Wait at least 24hrs after your last dose of Subutex or Suboxone before taking an opioid or it won't have any narcotic effect. There is a few important factors which will determine if an opioid will have an effect on you after Subutex and Suboxone treatment. Both Subutex and Suboxone have a 36 hour mean half-life which means half the drug will be out your system in 36 hours but this does not mean the other half will be gone 36 hours after this.
Long-term pain would (IMO, of course) be best managed by a low dose of methadone. The addiction is a curve-ball, however. Suboxone is sub-optimal (no pun intended, lol) for pain control BUT, it might work for you. Considering that you are an addict, you may want to give it a try first.