6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER

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

OF THE SECURITIES EXCHANGE ACT OF 1934

April 28, 2022

(Commission File Number: 001-15128)

United Microelectronics Corporation

(Translation of registrant’s name into English)

No.3 Li Hsin Road II

Science Park

Hsinchu, Taiwan, R.O.C.

(Address of principal executive office)

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

Form 20-F  ☒      Form 40-F  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101 (b) (1): ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101 (b) (7): ☐

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, thereto duly authorized.

United Microelectronics Corporation
By:	Chitung Liu
Name:	Chitung Liu
Title:	CFO

Date: April 28, 2022

2

EXHIBIT INDEX

Exhibit	Description
99	6K on 04/28/2022

3

EX-99

                                                                        www.umc.com

Exhibit

Exhibit            Description

99                    Announcement on 2022/04/28: To announce the differences for 2021 consolidated financial statements between TIFRSs and IFRSs as issued by the IASB

Exhibit 99

To announce the differences for 2021 consolidated financial statements between TIFRSs and IFRSs as issued by the IASB

1. Date of occurrence of the event: 2022/04/28

2. Year/Quarter of the financial report: 2021/Q4

3. Accounting principles applied for securities listed domestically:

International Financial Reporting Standards endorsed by the Financial Supervisory Commission of the Republic of China (TIFRSs)

4. Inconsistent items/amounts in financial reports for securities listed domestically:

Net income attributable to the shareholders of the parent of NT$55,780,255 thousand, basic earnings per share of NT$4.57 and diluted earnings per share of NT$4.48, total assets of NT$464,426,771 thousand, total liabilities of NT$183,223,887 thousand, and equity attributable to the parent company of NT$280,979,703 thousand.

5. Accounting principles applied for securities issued overseas:

International Financial Reporting Standards (IFRSs) as issued by the International Accounting Standards Board(IASB)

6. Inconsistent items/ amounts (securities issued overseas):

Net income attributable to the shareholders of the parent of NT$51,246,425 thousand, basic earnings per share of NT$4.27 and diluted earnings per share of NT$4.19, total assets of NT$450,955,341 thousand, total liabilities of NT$186,580,294 thousand, and equity attributable to the parent company of NT$264,151,866 thousand.

7. Inconsistent items/amounts in financial information for securities issued overseas:

The differences between the Company's 2021 consolidated financial statements on the basis of TIFRSs and IFRSs as issued by the IASB were primarily related to the timing of the recognition of additional income tax on unappropriated earnings and the accounting treatment of treasury stock.

8. Any other matters that need to be specified:

For more details, please refer to the 2021 Form 20-F we filed with the U.S. SEC.