• When was UMC incorporated ?

    UMC was incorporated on May 22, 1980 in the Hsinchu Science-Based Industrial Park, Taiwan, R.O.C.

  • What stock exchange is UMC traded on and under what ticker symbol ?

    UMC was listed on the Taiwan Stock Exchange (TSE) on July 16, 1985 under the ticker number 2303. As of September 19, 2000, UMC's American Depository Shares (ADS) trades on the New York Stock Exchange (NYSE) under the ticker symbol UMC.

  • How many shares of UMC stock have been issued ?

    As of March 31, 2023, UMC has issued 12,504,748,984 shares of stock. (Total ADSs are 134,334,926 ADSs, representing 671,674,630 common shares.)

  • What is the UMC shareholder composition ?

    UMC Shareholders Structure


    Domestic Shareholders


       Domestic Individual Investors 36.94%
       Domestic Corporations 10.05%
       Domestic Financial Institutions 8.04%
       Government and State-owned Institutions 2.29%
       Domestic Investment Trusts 5.38%
       Other Domestic Institutions 1.39%


    Foreign Shareholders


       Overseas Investment Trusts 33.29%
       Overseas Financial Institutions 1.02%
       Overseas Corporations 1.55%
       Overseas Individual Investors 0.05%

    Treasury Shares



    Source: Horizon Securities. Information accurate as of April 2, 2023

  • Who are UMC's major shareholders ?

    Shareholder's Name


    Common Shares

    JPMorgan Chase Bank, N.A. acting in its capacity as depositary and representative to the holders of ADRs



    Hsun Chieh Investment Co., Ltd.



    Fubon Life Insurance Co, Ltd.



    Silicon Integrated Systems Corp.



    Taiwan Life Insurance Co, Ltd.



    Yann Yuan Investment Co., Ltd.



    New Labor Pension Fund



    China Life Insurance Co, Ltd.



    Citibank in custody for Norges Bank



    Citibank Taiwan in custody for Government of Singapore




    Note: The data shown above was recorded on April 2, 2023, which was the book closure date for 2023 Annual General Meeting.

  • What is UMC's historical dividend information ?

    Please click here for Historical dividend details paid by UMC

  • How do I purchase TSE listed stocks ?

    Foreign individuals or institutions may still invest in Taiwan Stock Exchange listed stocks after registering to Taiwan Stock Exchanges. For registration, a partial list of requirements include :


    1. Documents showing the applicant's status in Taiwan.
    2. Documents proving the appointment of the agent, the custodian bank and the tax guarantor for the applicant.
    3. Other documents required by Financial Supervisory Commission, Executive Yuan. These requirements may be subject to amendment at any time. Investors should follow related regulations from goverment officials.


    It is also recommended that you contact your local broker for information on mutual funds which may hold Taiwanese stocks. You can invest in Taiwanese companies indirectly through these funds.

  • When does UMC's fiscal year officially end ?

    UMC follows the normal calendar year, therefore our fiscal year ends December 31.

  • Who is UMC common stock's transfer agent ?

    UMC's transfer agent is Horizon Securities.
    Horizon Securities
    Address : 3F, No. 236 Sec. 4, Hsin-I Rd., Taipei, Taiwan, R.O.C.
    Tel : 886-2-2326-8818
    Email : service@honsec.com.tw

  • For common stock in Taiwan, how do I transfer my stock or change my address with a transfer agent ?

    UMC's transfer agent is Horizon Securities. Any securities related operation such as, stock settlement, stock / cash dividends, address update, lost announcement, setting / cancelling pledges, chops update etc., please contact Horizon Securities in Taiwan at 886-2-2326-8818 or send information to service@honsec.com.tw
    They are located at 3F, No. 236 Sec. 4, Hsin-I Rd., Taipei, Taiwan, http://www.honsec.com.tw

  • Who is UMC ADR's depositary bank ?

    UMC's ADR's depositary bank is J.P. Morgan Depositary Receipts.
    J.P. Morgan Depositary Receipts
    383 Madison Avenue, 11th Floor New York, NY10179, U.S.A.
    Toll free in USA : 1-800-990-1135
    Outside USA : 1-651-453-2128

  • Who can provide ADR shareholder Services ?

    ADR Depositary Bank
    J.P. Morgan Depositary Receipts
    383 Madison Avenue, 11th Floor New York, NY10179, U.S.A.
    Toll free in USA : 1-800-990-1135
    Outside USA : 1-651-453-2128

  • Where can I find more information about UMC?

    Please click here for more information.

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