Benzinga's M&A Chatter for Thursday December 19, 2013

The following are the M&A deals, rumors and chatter circulating on Wall Street for Thursday December 19, 2013.

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Jazz Pharmaceuticals

and Gentium

announced Thursday that a subsidiary of Jazz Pharmaceuticals will make a cash tender offer of $57.00 per share for all outstanding Gentium ordinary shares and ADS's, in a transaction that is valued at approximately $1 billion. The deal is expected to close in Q1 2014. Jazz closed Thursday at $114.72, and traded at $122 after-hours. Gentium closed at $55.65, and bid at $57.15 after-hours.

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Dealertrack Technologies

and Dealer.com announced Thursday a definitive agreement for Dealertrack to acquire Dealer.com for approximately 8.7 million shares of Dealertrack's common stock and $620 million in cash. The deal is expected to close in Q1 2014. Dealertrack Technologies closed Thursday at $42.80 and traded at $45.89 after-hours.

:

reported Thursday that Liberty Media

executives, including Chairman John Malone and CEO Greg Maffei, estimated that a merger between Charter Communications

and Time Warner Cable

could generate approximately $700 million in annual synergies, according to sources. The matter was reportedly discussed last week at a meeting with large Time Warner Cable shareholders in Denver.

reported last week that Charter was preparing an offer of under $135 per share for the nation's second largest cable operator. Time Warner Cable closed Thursday at $133.74, a loss of $0.75.