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

A: The company shall distribute dividends within 30 days after the governing authorities approves the company's new paid-in capital registration. Those who hold company shares on the dividend record date are entitled to dividends. Dividends details paid by UMC:

Year of Dividends Paid	Cash Dividends		Stock Dividends		General Stockholders' Meeting Date
	NT / 1000 common shares	EX Trading Date	Shares / 1000 shares	Ex Trading Date
2010	500	7/8/2010	-	-	6/15/2010
2009	-	-	-	-	6/10/2009
2008	750*	8/8/2008	45*	8/8/2008	6/13/2008
2007	700	7/10/2007	-	-	6/11/2007
2006	409.14120	8/2/2006	10.228530	8/2/2006	6/12/2006
2005	102.9	8/2/2005	102.9261	8/2/2005	6/13/2005
2004	0	-	80	7/13/2004	6/1/2004
2003	0	-	40.1	7/15/2003	6/9/2003
2002	0	-	150	8/5/2002	6/3/2002
2001	0	-	150	7/13/2001	5/30/2001

*NT$750 per 1000 shares of cash dividend is contributed from retained earnings, while 45 shares of stock dividend is composed of 8 shares from retained earnings and 37 shares from capital reserve.

1992~2000 Dividends details:

Year of Dividends Paid Cash Dividends Stock Dividends General Stockholders' Meeting Date NT / 1000 common shares EX Trading Date Shares / 1000 shares Ex Trading Date 2000 0 - 200 5/10/2000 4/7/2000 1999 0 - 150 6/22/1999 5/13/1999 1998 0 - 290 6/10/1998 5/5/1998 1997 0 - 300 7/23/1997 6/24/1997 1996 0 - 930 5/18/1996 4/11/1996 1995 500 8/1/1995 500 8/1/1995 6/21/1995 1994 600 5/17/1994 250 7/7/1994 4/22/1994 1993 1000 6/15/1993 150 8/4/1993 5/20/1993 1992 0 - 210 7/26/1992 5/7/1992

The proposal for stockholder's dividends are discussed and passed in the General Shareholders' Meeting. After approval is received from the SFC (Securities and Future Commission) of the Ministry of Finance for dividend distribution, the chairman is authorized to set a dividend record date.