University of Minnesota spinout Calyxt has entered the public markets in a flotation that resulted in the share price climbing from $8 to $11.25 on the first day of trading.

Existing shareholders have provided additional funding to Abingdon Health, which is developing a test for multiple myeloma.

Video advertising software developer Mirriad aims to raise $35m in a London initial public offering that will score exits for Unilever, STV and Zee Entertainment.

University of Surrey in-video advertising spinout Mirriad is set to raise $35m in an initial public offering at a market cap of $84.4m.

Rogers Ventures has exited data refining technology developer Docurated in an acquisition by Quark of undisclosed size.

The transaction includes a 12.2% stake in Cell Design held by Kite Pharma, which Gilead bought for $11.9bn in October this year.

Adding Cell Design and Kite Pharma to its portfolio brings Gilead to the top table in probably the hottest area for advanced therapies and follows the playbook the company has used over the past few decades to expand.

Medical device maker Edwards Lifesciences has acquired cardiovascular device developer and University of Maryland, Baltimore spinout Harpoon Medical.