Frequency Therapeutics, a regenerative medicine developer advancing MIT and Harvard research, has set the range for an initial public offering that will raise $107m if it floats at the high end.

Facebook has paid a reported $500m to $1bn to acquire neural interface technology developer Ctrl-Labs, which had raised $67m from investors including GV and Alexa Fund.

Regnerative medicine developer Frequency Therapeutics has set the range for an initial public offering that will raise $107m if it floats at the high end.

Unity Technologies has bought game development services provider DeltaDNA, which had raised at least $4.3m from investors including STV.

HP has paid an undisclosed sum for anti-malware software producer Bromium, which had raised $110m of funding from investors including Intel Capital.

Creditshelf is buying business financing tool developer Valendo, which has raised an undisclosed amount from investors such as ProSiebenSat.1 Accelerator.

CapitalG-backed Airbnb, valued at $31bn as of 2017, has declared it plans to list its shares next year, and looks likely to choose a direct listing.

Oxford spinout Semmle has been acquired by GitHub, a subsidiary of Microsoft, providing exits to investors including Accel that had supplied $31m in funding.

Fosun-backed Shanghai Henlius Biotech has priced shares at the bottom of its range to raise $410m in its initial public offering ahead of public trading next week.

Haldor Topsøe remains the largest shareholder of cancer treatment developer IGM Biosciences, whose shares have risen more than 50% since it floated yesterday.