December 7, 2011, 9:09 PM UTC

Samsung and Biogen Idec (Nasdaq: BIIB) have entered into South Korea-based joint venture that will develop, manufacture, and market biosimilars. Samsung will invest $255 million for an 85% stake, while Biogen Idec will invest $45 million for a 15% stake. www.samsung.com

Blacks Leisure, a listed British outdoor goods retailer, has put itself up for sale.www.blacksleisure.co.uk

Inergy Midstream, a spin-off of Inergy LP (NYSE: NRGY), has set its IPO terms to 16 million common units being offered at between $19 and $21 per unit. It plans to trade on the NYSE under ticker symbol NRGM, with Morgan Stanley and Barclays serving as co-lead underwriters.

J.C. Penney Co. (NYSE: JCP) has agreed to acquire a 16.6% stake in Martha Stewart Living Omnimedia (NYSE: MSO) for $38.5 million. The $3.50 per share price represents a 12% premium to yesterday’s closing price. Martha Stewart hired Blackstone Group back in May to explore strategic alternatives. www.jcpenney.com

Optima Specialty Steel has acquired Niagara LaSalle Corp., a Buffalo, N.Y.–based maker of cold finished steel bars, from Kohlberg & Co. No financial terms were disclosed. Harris Williams & Co. managed the process. www.niagaralasalle.com
SuccessFactors Inc. (NYSE: SFSF) has agreed to acquire Jobs2Web, a Minnetonka, Minn.–based recruiting marketing platform, for $110 million in cash. Sellers include Updata Partners. SuccessFactors announced over the weekend that it will be acquired by SAP for $3.4 billion. www.successfactors.com

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