Nautilus Announces Pending Expiry of Rights Offering

TORONTO, ONTARIO--(Marketwired - May 27, 2013) -

NOT FOR DISTRIBUTION TO UNITED STATES NEWS WIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

Nautilus Minerals Inc. (TSX:NUS)(OTCQX:NUSMF) (the "Company" or "Nautilus") announces that, further to its news release dated April 15, 2013, regarding the Company's Rights Offering to its shareholders resident in Canada and in eligible foreign jurisdictions, the Company wishes to remind shareholders that the Rights, which are trading on the Toronto Stock Exchange under symbol NUS.RT, will expire and cease to be exercisable at 2:00 p.m. (Vancouver time), on Friday, May 31, 2013.

Shareholders are urged to contact their brokers or financial advisors well in advance of the expiry date.

The Company has issued one right for each common share outstanding as of the close of business on April 25, 2013. Each right is exercisable to acquire 0.844335 common shares of the Company, upon payment of the subscription price of $0.20 per full common share. Fractional shares will not be issued.

The Rights will cease trading on the Toronto Stock Exchange at 9:00 a.m. (Vancouver time), on May 31, 2013.

The securities referred to in this news release have not been, nor will they be, registered under the United States Securities Act of 1933, as amended, and may not be offered or sold within the United States or to, or for the account or benefit of, U.S. persons absent U.S. registration or an applicable exemption from the U.S. registration requirements. This news release does not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

With respect to the United Kingdom, the securities offered under the final prospectus are only available to: (i) persons outside the United Kingdom; or (ii) persons in the United Kingdom who are: (a) a "qualified investor" within the meaning of Section 86(7) of FSMA, acting as principal or in circumstances where Section 86(2) FSMA applies; and (b) also within the categories of persons referred to in Article 19 (investment professionals) or Article 49 (high net worth companies, unincorporated associations, etc.) of the Financial Promotion Order (all such persons together being referred to as "relevant persons"). Such securities are only available to, and any invitation, offer or agreement to subscribe, purchase or otherwise acquire such securities will be engaged in only with, relevant persons. Any person who is not a relevant person should not act or rely on this document or any of its contents. This document contains no offer of transferable securities to the public in the United Kingdom within the meaning of sections 85(1) and 102B FSMA. This document is not a prospectus for the purposes of Section 85(1) FSMA. Accordingly, this document has not been examined or approved as a prospectus by the FSA under Section 87A FSMA or by the London Stock Exchange and has not been filed with the FSA pursuant to the United Kingdom Prospectus Rules nor has it been approved by a person authorized under FSMA, for the purposes of Section 21 FSMA.

About Nautilus Minerals Inc.

Nautilus is the first company to explore the ocean floor for polymetallic seafloor massive sulphide deposits. Nautilus was granted the first mining lease for such deposits at the prospect known as Solwara 1, in the territorial waters of Papua New Guinea, where it is aiming to produce copper, gold and silver. The company has also been granted its environmental permit for this site.

Nautilus also holds more than 500,000 km² of highly prospective exploration acreage in the western Pacific; in PNG, the Solomon Islands, Fiji, Vanuatu and Tonga, as well as in international waters in the eastern Pacific.

A Canadian registered company, Nautilus is listed on the (TSX:NUS) stock exchange and (OTCQX:NUSMF). Its corporate office is in Brisbane, Australia. Its major shareholders include Metalloinvest, the largest iron ore producer in Europe and the CIS, which has a 21% holding, global mining group Anglo American, which holds an 11.1% interest and MB Holding, an Oman based group with interests in mining, oil & gas, which holds a 16.7% interest.