# EDGAR Filing Document

**Accession Number:** 0001033767
**File Stem:** 0001193125-26-065068
**Filing Date:** 2026-2
**Character Count:** 6158
**Document Hash:** 883d250c5f43c57f61ffcc21c57d174b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-065068.hdr.sgml**: 20260224

**ACCESSION NUMBER**: 0001193125-26-065068

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 3

**CONFORMED PERIOD OF REPORT**: 20260224

**FILED AS OF DATE**: 20260224

**DATE AS OF CHANGE**: 20260224

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** UNITED MICROELECTRONICS CORP
- **CENTRAL INDEX KEY:** 0001033767
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** F5
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-15128
- **FILM NUMBER:** 26667351

**BUSINESS ADDRESS:**
- **STREET 1:** 8F, NO.68, SEC. 1, NEIHU RD.,
- **CITY:** TAIPEI
- **STATE:** F5
- **ZIP:** 11493
- **BUSINESS PHONE:** 886-2-2658-9168

**MAIL ADDRESS:**
- **STREET 1:** 8F, NO.68, SEC. 1, NEIHU RD.,
- **CITY:** TAIPEI
- **STATE:** F5
- **ZIP:** 11493

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

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**FORM 6-K** 

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**REPORT OF FOREIGN ISSUER** 

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

**OF THE SECURITIES EXCHANGE ACT OF 1934** 

**February 24, 2026** 

**(Commission File Number: 001-15128)** 

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**United Microelectronics Corporation**

**(Translation of registrant's name into English)** 

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**No. 3 Li-Hsin 2nd Road, Hsinchu Science Park, Hsinchu, Taiwan, R.O.C.** 

**(Address of principal executive office)** 

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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): 

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**<u>SIGNATURES</u>** 

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.

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

---

Date: February 24, 2026

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**EXHIBIT INDEX** 

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| | |
|:---|:---|
| **Exhibit**  | **Description**  |
| <br>99 | <br>[<u>6K on 02/24/2026</u>](umc-ex99.htm) |

---

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## Ex-99

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

![img239034952_0.jpg](img239034952_0.jpg)**www.umc.com**

**Exhibit**

<u>Exhibit</u> <u>Description</u> 

99.1 Announcement on 2026/02/24: Represent major subsidiary United Semiconductor (Xiamen) Co., Ltd. to announce the Board Resolution to Convene a 2026 Shareholders' Meeting

99.2 Announcement on 2026/02/24: To announce the board of directors not to distribute dividends on behalf of subsidiary UMC GROUP (USA)

99.3 Announcement on 2026/02/24: Change of the representative of juristic-person director

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**Exhibit 99.1**

**Represent major subsidiary United Semiconductor (Xiamen) Co., Ltd. to announce the Board Resolution to Convene a 2026 Shareholders' Meeting**

1. Date of the board of directors' resolution: 2026/02/24

2. Shareholders meeting date: 2026/03/12

3. Shareholders meeting location:

No.899 Wan Jia Chun Road, Xiang'an District, Xiamen, Fujian Province, China

4. Cause for convening the meeting (1) Reported matters: None

5. Cause for convening the meeting (2) Acknowledged matters:

1. The Company's 2025 Annual Audit Financial Report

2. The Company's 2026 Annual Operating Budget Proposal

6. Cause for convening the meeting (3) Matters for Discussion:

1. To amend the company's "Asset Acquisition and Disposal Procedures"

7. Cause for convening the meeting (4) Election matters: None

8. Cause for convening the meeting (5) Other Proposals: None

9. Cause for convening the meeting (6) Extemporary Motions: None

10. Book closure starting date: NA

11. Book closure ending date: NA

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

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**Exhibit 99.2**

**To announce the board of directors not to distribute dividends on behalf of subsidiary UMC GROUP (USA)**

1. Date of the board of directors' resolution: 2026/02/24

2. Type and monetary amount of dividend distribution:

The board has resolved not to distribute dividend.

3. Any other matters that need to be specified:

According to the audit report issued by the accounting firm, the remaining surplus is retained as the working capital of the company.

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**Exhibit 99.3**

**Change of the representative of juristic-person director**

1. Date of occurrence of the change: 2026/02/24

2. Name of legal person: Hsun Chieh Investment Co., Ltd.

3. Name of the previous position holder: SC Chien

4. Resume of the previous position holder: Director of UMC

5. Name of the new position holder: Ming Hsu

6. Resume of the new position holder: Executive Vice President of UMC

7. Reason for the change: Replacement of the representative

8. Original term (from __________ to __________): from 2024/05/30 to 2027/05/29

9. Effective date of the new appointment: 2026/02/24

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

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