ChipMOS TECHNOLOGIES Announces Proposed Secondary Offering

HSINCHU, Taiwan, Oct. 25, 2012 /PRNewswire-FirstCall/ -- ChipMOS TECHNOLOGIES (Bermuda) LTD. ("ChipMOS" or the "Company'') (NASDAQ: IMOS) today announced that its shareholders ThaiLin Semiconductor Corp., a subsidiary of ChipMOS ("ThaiLin"), and Siliconware Precision Industries Co., Ltd. ("Siliconware Precision") intend to offer ChipMOS common shares in an underwritten public offering. ThaiLin will receive the proceeds from its sale of ChipMOS' common shares in this offering. ChipMOS will not receive any of the proceeds from the sale of shares by Siliconware Precision. The intended offering is subject to market and other conditions, and there can be no assurance as to whether or when the offering may be completed, or as to the actual size or terms of the offering.

Cowen and Company, LLC and Craig-Hallum Capital Group LLC are acting as joint book-running managers for the intended offering.

ThaiLin and Siliconware Precision intend to offer and sell these securities pursuant to the Company's registration statement (File No. 333-181367) filed with the Securities and Exchange Commission on May 11, 2012, as amended on June 5, 2012, June 13, 2012, and August 16, 2012, which was declared effective on September 5, 2012. When the terms of the intended offering are determined a prospectus supplement relating to the intended offering will be filed with the Securities and Exchange Commission (SEC), that will form a part of the effective registration statement.

When available, copies of the prospectus supplement and accompanying base prospectus may be obtained from Cowen and Company, LLC c/o Broadridge Financial Services, 1155 Long Island Avenue, Edgewood, NY,11717, Attn: Prospectus Department, Phone: 631-274-2806, Fax: 631-254-7140; or from Craig-Hallum Capital Group LLC, via telephone: 612-334-6388 facsimile: 612-334-6348; email: [email protected]; or standard mail at Craig-Hallum Capital Group LLC, 222 South Ninth Street, Suite 350, Minneapolis, MN 55402; and will be available on the SEC's website located at www.sec.gov.

This news release shall not constitute an offer to sell or the solicitation of an offer to buy any securities of ChipMOS, nor shall there be any sale of securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. The offer will be made only by means of a prospectus, including a prospectus supplement, forming part of an effective registration statement.

About ChipMOS TECHNOLOGIES (Bermuda) LTD.:

ChipMOS (http://www.chipmos.com) is a leading independent provider of semiconductor testing and assembly services to customers in Taiwan, Japan, and the U.S. With advanced facilities in Hsinchu and Southern Taiwan Science Parks in Taiwan and Shanghai, ChipMOS and its subsidiaries provide testing and assembly services to a broad range of customers, including leading fabless semiconductor companies, integrated device manufacturers and independent semiconductor foundries.

Forward-Looking Statements:

This news release contains forward-looking statements. Words such as "believes", "anticipates", "plans", "expects", "intend", "will", "goal", "potential" and similar expressions are intended to identify forward-looking statements. These forward-looking statements are based upon the Company's current expectations and involve risks and uncertainties. Actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these risks and uncertainties, which include, without limitation, risks related to the Company's ability to satisfy the closing conditions required for the consummation of the intended offering and other risks detailed in the registration statement covering the intended offering and in the Company's filings with the Securities and Exchange Commission, including "Item 3. Key Information -- Risk Factors" in our Annual Report on Form 20-F for the year ended December 31, 2011, and subsequent Reports on Form 6-K. These reports can be accessed on the SEC's website at www.sec.gov. These forward-looking statements speak only as of the date of this news release and undue reliance should not be placed on them. All forward-looking statements are qualified in their entirety by this cautionary statement. Except where required by law, the Company undertakes no obligation to revise or update any forward-looking statements to reflect events or circumstances after the date of this news release.

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SOURCE ChipMOS TECHNOLOGIES (Bermuda) LTD.