Kolltan, which is backed by Purdue Pharma and Gilead Sciences, will use the proceeds to advance its candidates through early-stage clinical trials.

The car rental company is one of several cornerstone investors that will invest $30m as the China-based company seeks $467m from a Hong Kong initial public offering.

The pharmaceutical company, which is developing treatments for disorders including neuropathic pain and Crohn's Disease, is backed by investors including AbbVie.

The offering will value the corporate-backed incubator and venture fund at approximately $6.45bn.

The e-commerce company is planning to launch the largest IPO ever, putting Yahoo in line to earn $8bn.

The Parkinson's disease drug developer has filed for an initial public offering the day after closing a $55m Alkermes-backed series C round.

The Google and Salesforce-backed sales and marketing software company has raised about $100m in venture funding so far.

The Nippon Insurance and Recruit-backed task crowdsourcing platform has been approved for an IPO in Japan.

Otonomy, which is developing treatments for ear disorders, could boost the size of the offering to $115m if the underwriters take up the option to buy more shares.

The pharmaceutical company has raised over $100m in equity funding from investors including Boehringer Ingelheim and Allergen.