SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of June, 2015

ChipMOS TECHNOLOGIES (Bermuda) LTD.

(Translation of Registrant’s Name Into English)

No. 1, R&D Rd. 1, Hsinchu Science Park

Hsinchu, Taiwan

Republic of China

(Address of Principal Executive Offices)

(Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.)

Form 20-F  x            Form 40-F  ¨

(Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.)

Yes  ¨            No   x

(If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-            .)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	ChipMOS TECHNOLOGIES (Bermuda) LTD.
	(Registrant)
Date: June 18, 2015	By	/S/ S. J. Cheng
	Name:	S. J. Cheng
	Title:	Chairman & Chief Executive Officer

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

UPDATE: ChipMOS’ SUBSIDIARIES COMPLETE MERGER

Hsinchu, June 18, 2015 - ChipMOS TECHNOLOGIES (Bermuda) LTD. (“ChipMOS” or the “Company”) (Nasdaq: IMOS), an industry leading provider of outsourced semiconductor assembly and test services (“OSAT”), today announced that two of its subsidiaries, ChipMOS TECHNOLOGIES INC. (“ChipMOS Taiwan”) and ThaiLin Semiconductor Corp. (“ThaiLin”) completed their merger on June 17, 2015. ChipMOS Taiwan will continue as the surviving merged entity and will remain listed on the TWSE trading under its current stock ticker “8150”. The merged entity is now a 58% owned subsidiary of ChipMOS TECHNOLOGIES (Bermuda) LTD.

S.J. Cheng, Chairman and Chief Executive Officer of ChipMOS, said, “We are pleased to achieve this latest step in our ongoing efforts to streamline the Company’s corporate and financial structure. Our goal remains to better maximize potential efficiencies and to further build shareholder value. We remain optimistic about our business focus and growth strategy, our targeted CapEx plan and our continued corporate streamlining initiatives.”

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 test services. With advanced facilities in Hsinchu and Southern Taiwan Science Parks in Taiwan and Shanghai, ChipMOS and its subsidiaries provide assembly and test 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 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.