Chilwa Minerals (CHWM) has priced an underwritten public offering of 625,000 American depositary shares and warrants to purchase 625,000 ADSs at $5.60 each, the company said late Wednesday.

Each ADS represents 10 shares of Chilwa, the company said.

The offering is expected to generate $3.5 million in gross proceeds, the company said.

The shares are expected to begin trading on Nasdaq under the ticker symbol "CHWM" on Thursday, and the offering is expected to close Friday, it said.

In addition, Chilwa has granted the underwriter a 45-day option to purchase up to 92,000 additional ADSs and/or additional warrants to purchase up to 92,000 ADSs, the company said.