Assembly Biosciences (ASMB) said Friday it has priced an underwritten, registered offering of 3,358,602 shares at $26.50 per share and pre-funded warrants to purchase up to 415,000 shares at $26.499 per warrant, for gross proceeds of approximately $100 million.

Certain investors will buy the pre-funded warrants in lieu of common stock, the company said.

Assembly Bio has also granted a 30-day option for underwriters to acquire up to an additional 566,040 shares of common stock at the offering price, less underwriting discounts and commissions.

The company will use the net proceeds to fund the clinical development of pipeline candidates, and for general corporate purposes.

Assembly Biosciences' stock was up 1.6% pre-bell.