Benzinga's Top Pre-Market Gainers

American Dental Partners Inc ADPI moved up 79.38% to $18.62 in the pre-market session. American Dental Partners agreed to be bought by private-equity firm JLL Partners Inc for $19 per share in cash. Force Protection Inc FRPT surged 29.69% to $5.46 in the pre-market session. General Dynamics GD agreed to buy Force Protection for $360 million. Pharmasset Inc VRUS added 11.76% to $76.99 in the pre-market session. VRUS shares have jumped 243.93% over the past 52 weeks, while the S&P 500 index has gained 2.23% in the same period. Tekelec TKLC soared 10.40% to $13.99 in the pre-market trading. Tekelec agreed to be bought for around $780 million in cash by a consortium led by Siris Capital Group LLC.