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Exhibit

Exhibit            Description

99.1                 Announcement on 2019/11/08: October Revenue

99.2                 Announcement on 2019/11/15: the trading and pledge of UMC common shares by directors, executive officers and 10% shareholders of UMC

Exhibit 99.1

United Microelectronics Corporation

November 8, 2019

This is to report the changes or status of 1) Sales volume, 2) Funds lent to other parties, 3) Endorsements and guarantees, and 4) Financial derivative transactions for the period of October 2019.

1) Sales volume (NT$ Thousand)

Period	Items	2019	2018	Changes	%
October	Net sales	14,587,122	12,577,408	2,009,714	15.98%
Year-to-Date	Net sales	120,939,705	128,312,778	(7,373,073)	(5.75)%

2) Funds lent to other parties (NT$ Thousand)

Balance as of period end	This Month (actual amount provided)	Last Month (actual amount provided)	Limit of lending
UMC	7,597,500	7,742,500	20,463,890
Note : On March 6,2019, the board of directors resolved to lend funds to USC(Xiamen) for the amount up to US$ 250 million. The actual amount lent to USC(Xiamen) as of October 31, 2019 was US$ 40 million.

3) Endorsements and guarantees (NT$ Thousand)

Balance as of period end	This Month (actual amount provided)	Last Month (actual amount provided)	Limit of lending
UMC (Note1)	748,000	748,000	92,087,503
UMC (Note2)	14,496,030	14,772,690	92,087,503
Note1 : On December 12, 2018, the board of directors resolved to provide endorsement to Nexpower’s syndicated loan from banks including Bank of Taiwan for the amount up to NT$ 748 million. Note2 : On February 22, 2017, March 7, 2018, October 24, 2018 and July 24, 2019, the board of directors resolved to provide endorsement to USC(Xiamen)’s syndicated loan from banks for the amount up to US$ 477 million.

4) Financial derivatives transactions :

aNot under hedging accounting : NT$ thousand

UMC

Financial instruments	Option		Forwards	IRS
	Put	Call
Deposit Paid	0	0	0	0
Royalty Income (Paid)	0	0	0	0
Unwritten-off Trading
Contracts	0	0	0	0
Fair Value	0	0	0	0
Net profit (loss) from Fair Value	0	0	(3,561)	0
Written-off Trading
Contracts	0	15,711,370	28,019,308	0
Realized profit (loss)	0	0	(21,925)	0

Exhibit 99.2

United Microelectronics Corporation

For the month of October, 2019

This is to report 1) the trading of directors, executive officers and 10% shareholders of United Microelectronics Corporation (“UMC”) (NYSE: UMC); 2) the pledge and clear of pledge of UMC common shares by directors, executive officers and 10% shareholders of UMC;

1) The trading of directors, executive officers and 10% shareholders

Title	Name	Number of shares as of September 30, 2019	Number of shares as of October 31, 2019	Changes
--	--	--	--	--

2) The pledge and clear of pledge of UMC common shares by directors, executive officers and 10% shareholders:

Title	Name	Number of shares as of September 30, 2019	Number of shares as of October 31, 2019		Changes
--	--	--	--	--