Benzinga's Weekend M&A Chatter

The following are the M&A deals, rumors and chatter circulating on Wall Street for Friday Decmeber 5 throught Sunday December 7, 2014:

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Merck & Co Inc.

, is reportedly in talks to acquire Lexington, MA-based Cubist Pharmaceuticals Inc.

for around $7.5 billion, or approximately $100 per share according to the NY Times DealBook. A deal could be announced as early as next week, according to persons familiar with the matter. Cubist shares closed Friday at $74.36, down $0.16.

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OpenText Corporation

announced Frday, an agreement to acquire Actuate Corporation

for $6.60 per share in cash, for a total equity value of approximately $330 million. OpenText will commence a tender offer for all of the shares of common stock of Actuate within 7 business days. The deal is expected to close in Q3 of OpenText's fiscal 2015. Actuate shares closed Friday at $6.55, a gain of 87%.

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Shares of Bristol-Myers Squibb Company (BMY) rose in early trading Friday, on unconfirmed market chatter of a potential bid from Pfizer Inc.

. Pfizer could offer up to $72.00 per share for the New York-based biopharmaceutical company. Spokespersons for Bristol Myers Squibb and Pfizer declined comment on the rumor. Bristol Myers Squibb closed Friday at $60.65, a gain of 3%.