Respect your position. Hypothetically speaking of course, wouldnt investor X have substantial more bargaining power if they voted against now and then re-evaluated right before the closing date. Investor X wouldnt be locked in to the no vote, but by this action they would successfully given the Board more bargaining power to go back to Pfizer to negotiate a better deal for all shareholders. Hypothetically you would think its the best way to guarantee shareholders the best $$$. All IMO not financial advice