July 20, 2012, 6:18 PM UTC

Activa SA, the private equity unit of LarrainVial SA, has agreed to acquire Chilean natural gas group Repsol Butano Chile from Spain’s Repsol for $540 million in cash.

Aegis Group PLC (LSE: AGS) has agreed to acquire Chinese digital marketing agency Catch Stone for £55.2 million.

Heineken NV has launched a $4.1 billion bid for Asia Pacific Breweries Ltd., the maker of Tiger Beer.

Sandy Spring Bancorp Inc. (Nasdaq: SASR) has acquired CommerceFirst Bancorp Inc. (Nasdaq: CMFB) for approximately $25.2 million in cash and stock.

Tetra Technologies Inc. (NYSE: TTI) has agreed to acquire Greywolf Production Systems, a Canadian well testing and flow back company, for $55.5 million in cash. www.greywolfsystems.ca

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