ChipMOS OPERATIONS NOT IMPACTED BY KAOHSIUNG, TAIWAN GAS PIPELINE EXPLOSION

HSINCHU, August 4, 2014 /PRNewswire-FirstCall/ — ChipMOS TECHNOLOGIES (Bermuda) LTD. (“ChipMOS”) (Nasdaq: IMOS), an industry leading provider of outsourced semiconductor assembly and testing services, today confirmed that none of its employees were harmed nor were the Company’s manufacturing operations impacted by the recent gas explosion in Kaohsiung, Taiwan, which is approximately 30 miles from ChipMOS’ Taiwan fab.

S.J. Cheng, Chairman and Chief Executive Officer of ChipMOS, said, “Our thoughts are with the families of those suffering from the loss of or injury to loved ones, and to the countless others impacted by this deadly gas pipeline explosion.”

About ChipMOS TECHNOLOGIES (Bermuda) LTD.:

ChipMOS TECHNOLOGIES (Bermuda) LTD. (“ChipMOS” or the “Company”) (NASDAQ: IMOS) (http://www.chipmos.com) is an industry leading provider of semiconductor assembly and testing services. With advanced facilities in Hsinchu and Southern Taiwan Science Parks in Taiwan and Shanghai, China, 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. The Company’s majority-owned subsidiary, ChipMOS TECHNOLOGIES INC. (“ChipMOS Taiwan”), is listed on the Taiwan Stock Exchange under Stock Ticker 8150.

Forward-Looking Statements

Certain statements contained in this announcement may be viewed as “forward-looking statements” within the meaning of Section 27A of the U.S. Securities Act of 1933, as amended, and Section 21E of the U.S. Securities Exchange Act of 1934, as amended. Such forward-looking statements involve known and unknown risks, uncertainties and other factors, which may cause the actual performance, financial condition or results of operations of the Company to be materially different from any future performance, financial condition or results of operations implied by such forward-looking statements. Further information regarding these risks, uncertainties and other factors is included in the Company’s most recent Annual Report on Form 20-F filed with the U.S. Securities and Exchange Commission (the “SEC”) and in the Company’s other filings with the SEC.

Contacts:

In Taiwan

Dr. S.K. Chen

ChipMOS TECHNOLOGIES (Bermuda) LTD.

+886-6-507-7712

s.k._chen@chipmos.com

In the U.S.

David Pasquale

Global IR Partners

+1-914-337-8801

dpasquale@globalirpartners.com