Surface Oncology Inc. picked a day when the U.S. financial markets were flowing solid red to price its upsized IPO of 7.2 million common shares at $15 apiece – the high end of its proposed range – and raise $108 million. The Cambridge, Mass.-based company added $11.5 million in a concurrent private placement of 766,666 additional shares to Novartis Institutes for Biomedical Research Inc. at the IPO price. A 30-day option to underwriters to purchase up to 1.08 million additional common shares could add $16.2 million to Surface's haul.