les +47% Astrazeneca is close to selling Astra Tech to Dentsply International (XRAY) for about $1.8 billion Susquehanna Bancshares (SUSQ) acquires Tower Bancorp (TOBC) for $243 million (37.5% premium) Stanford University CIO Ken Frier leaves after less than one year on the job (-$14 billion endowment) Gar