Benzinga's M&A Chatter for Monday September 29, 2014

The following are the M&A deals, rumors and chatter circulating on Wall Street for Monday September 29:

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TIBCO Software Inc.

announced Monday, that it has agreed to be acquired by Vista Equity Partners for $24.00 per share in cash, for a total of approximately $4.3 billion, including assumption of net debt. The deal is expected to close in Q4 of 2014. TIBCO Software shares closed Monday at $20.15, a gain of more than 50%.

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Einstein Noah Restaurant Group, Inc.

and JAB Holding Company announced Monday an agreement under which a JAB affiliate will acquire Einstein Noah Restaurant Group for $20.25 per share in cash, for a total diluted equity value of approximately $374 million. Under the terms of the merger agreement, an affiliate of JAB will commence a tender offer to acquire all Einstein Noah Restaurant Group common stock at $20.25 per share in cash. David Einhorn's Greenlight Capital, which owns more than 35% of Einstein Noah Restaurant Group, has agreed to tender its shares in support of the transaction. Einstein Noah Restaurant shares closed Monday at $20.15, a gain of more than 50%.

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Encana Corporation

and Athlon Energy Inc.

announced Monday, that the companies have agreed that Encana will acquire all of the issued and outstanding shares of common stock of Athlon by means of an all-cash tender offer for US$5.93 billion or $58.50 per share, and Encana will assume Athlon's $1.15 billion of senior notes, for a total transaction value of approximately US$7.1 billion. The transaction is expected to close by the end of 2014. Athlon Energy shares gained almost 25% Monday to close at $58.32.

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Shares of Computer Sciences Corporation

surged higher Monday, on a report from

that the company has contacted private-equity firms, including Blackstone Group LP

and Bain Capital LLC, regarding a potential leveraged buyout, according to sources. Spokespersons for Computer Sciences Corporation, Bain and Blackstone declined comment on the rumor. Computer Sciences Corporation closed Monday at $59.62, a gain of more than 5%.

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Shares of Iron Mountain Inc.

spiked as high as $34.31 Monday, on a report from

that the company was in takeover talks with Australia's Recall Holdings Limited

, according to sources. Recall holdings later issued a statement saying it was not in talks with Iron Mountain or another potential buyer. Iron Mountain closed Monday at $33.90, a gain of more than 6%.