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

May 31, 2023

(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.

Date: May 31, 2023

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EXHIBIT INDEX

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                                                                        www.umc.com

Exhibit

Exhibit            Description

99                    Announcement on 2023/05/31: Important Resolutions from UMC’s 2023 Annual General Meeting

Exhibit 99

Important Resolutions from UMC’s 2023 Annual General Meeting

1. Date of the shareholders meeting: 2023/05/31

2. Important resolutions (1) Profit distribution/ deficit compensation:

Approved the Company’s 2022 earnings distribution

10,359,861,673 shares were represented at the time of voting (including 7,762,584,312 shares voted via electronic transmission)

Votes for: 9,417,791,365 votes; 90.91% of the total represented at the time of voting.

Votes against: 1,033,055 votes; 0.01% of the total represented at the time of voting.

Votes invalid: 0 votes; 0.00% of the total represented at the time of voting.

Votes abstained: 941,037,253 votes; 9.08% of the total represented at the time of voting.

3. Important resolutions (2) Amendments to the corporate charter: None

4. Important resolutions (3) Business report and financial statements:

Approved the Company’s 2022 business report and financial statements

10,359,861,673 shares were represented at the time of voting (including 7,762,584,312 shares voted via electronic transmission)

Votes for: 9,398,179,832 votes; 90.72% of the total represented at the time of voting.

Votes against: 2,200,934 votes; 0.02% of the total represented at the time of voting.

Votes invalid: 0 votes; 0.00% of the total represented at the time of voting.

Votes abstained: 959,480,907 votes; 9.26% of the total represented at the time of voting.

5. Important resolutions (4) Elections for board of directors and supervisors: None

6. Important resolutions (5) Any other proposals: None

7. Any other matters that need to be specified: None