Arch Capital Group Ltd. has announced the pricing of a public offering of 4 million depositary shares, each representing a 0.001 interest in a 5.45% noncumulative series F preferred share.

The public offering price is $25.16 per share for an aggregate public offering price of about $100.6 million. The offering is in addition to an August issuance of its series F preferred shares.

The offering is expected to close Dec. 1.

Merrill Lynch Pierce Fenner & Smith Inc. and Wells Fargo Securities LLC are joint book-running managers.