The company priced 7.76 million shares at $9 each, which was below the $10 $12 per share offering range, for an initial market capitalisation of about $240m.

Enerkem's slow-to-no IPO might frustrate venture capitalists but with such a business case for shifting a business model, using corporate venturing as a tool to help speed up or make the shift would appear to be a no-brainer for Waste Management at least.

Last month, Luca set the upper limit of its flotation range at $110.5m.

Rib-X had been expected to raise up to $80m with a market capitalisation of $212m.

The US-based chip manufacturer buys Olaworks, which Intel Capital backed in 2007.

Biopharmaceutical company Clovis Oncology, backed by Pfizer, sells the shares following its initial public offering in November last year.

Three Blue healthcare plans partner with venture-backed healthcare technology company Lumeris to buy real time communication network Navinet, backed by GE Equities.

The Japan-based manufacturing company buys US-based optical networking company Nistica.

DBV Technologies, a France-based allergy treatment company, which was the first deal done by Shire Therapeutics' corporate venturing unit, also secures its first portfolio company flotation in Paris.

Marc Samwer, who headed Groupon's international operations and owns part of the company along with his brother Oliver, leaves during a torrid month for the company.