You've miss the actual story. Activist investors (Starboard) forced her to sell. She had no desire to sell. The payout was set up to make a sale less appealing

You've miss the actual story. Activist investors (Starboard) forced her to sell. She had no desire to sell. The payout was set up to make a sale less appealing to the board. They also set up change in control provisions for the entire company, so any employer who gets canned as a result of the deal has immediate vesting of all invested stock. This will be as high as $1B in cost for Verizon if they fire everyone. Again, incentives against a deal.