OptiNose Inc. will sell more common shares than planned and raise $120 million in its initial public offering.

The company will sell 7.5 million shares for $16 apiece. It had originally planned to sell 6,250,000 common shares in the IPO at between $15 and $17 apiece.

OptiNose granted underwriters an option to buy up to an additional 1,125,000 common shares.

The shares are expected to start trading Oct. 13 on the Nasdaq Global Select Market under the symbol OPTN.

The offering is expected to close Oct. 17.

Jefferies and Piper Jaffray are acting as the lead joint book-running managers of the offering. BMO Capital Markets and RBC Capital Markets are acting as joint book-running managers for the offering.