STOCK TITAN
  1. Home
  2. Sec-filings
  3. UMC
  4. [6-K] UNITED MICROELECTRONICS CORP Current Report (Foreign Issuer)

UMC (UMC) March 2026 sales rise 4.9% with modest derivative losses

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
6-K

Rhea-AI Filing Summary

United Microelectronics Corporation reported steady March 2026 operating data. March net sales were NT$20,830,626 thousand, up 4.89% from March 2025. Year-to-date 2026 net sales reached NT$61,037,902 thousand, a 5.49% increase over the same period in 2025.

The company reported no funds lent to other parties and no endorsements or guarantees in March 2026. For financial derivatives, UMC had unwritten-off forward trading contracts with a notional amount of NT$1,118,250 thousand, a negative fair value of NT$11,945 thousand, a net loss from fair value of NT$11,292 thousand, and realized losses of NT$6,276 thousand on written-off forwards.

Positive

  • None.

Negative

  • None.
March 2026 net sales NT$20,830,626 thousand Net sales for March 2026
March 2025 net sales NT$19,858,647 thousand Net sales for March 2025
March YoY change 4.89% Year-over-year net sales change for March
YTD 2026 net sales NT$61,037,902 thousand Year-to-date net sales 2026
YTD 2025 net sales NT$57,858,957 thousand Year-to-date net sales 2025
YTD YoY change 5.49% Year-to-date net sales growth vs 2025
Unwritten-off forwards notional NT$1,118,250 thousand Forward trading contracts not under hedging accounting
Forward contracts fair value NT$(11,945) thousand Negative fair value on forwards in March 2026
financial derivative transactions financial
"4) Financial derivatives transactions for the period of March 2026."
endorsements and guarantees financial
"3) Endorsements and guarantees (NT$ Thousand): None"
unwritten-off trading contracts financial
"Unwritten-off Trading | | | | Contracts | 0 | 0 | 1,118,250 | 0"
fair value financial
"Fair Value | 0 | 0 | (11,945) | 0"
Fair value is an estimate of what an asset or company is really worth today, derived from expected future earnings, comparable market prices and other relevant facts—like agreeing a price for a used car after checking mileage, condition and similar listings. Investors use fair value to decide whether a stock looks overpriced or undervalued, which helps guide buy, hold or sell decisions and sets expectations for potential returns and risk.
realized profit (loss) financial
"Realized profit (loss) | 0 | 0 | (6,276) | 0"
Form 6-K: How Foreign Companies Report to the SEC →

 

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 8, 2026

(Commission File Number: 001-15128)

United Microelectronics Corporation

(Translation of registrant’s name into English)

No. 3 Li-Hsin 2nd Road,

Hsinchu 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 8, 2026

 

 

2

 

 

EXHIBIT INDEX

Exhibit

 

Description

 

99.1

 

 

6K on 04/08/2026

 

3

 

img208044986_0.jpg www.umc.com

Exhibit

Exhibit Description

 

99.1 Announcement on 2026/04/08: March Revenue

 

 

 

 

 

Exhibit 99.1

United Microelectronics Corporation

April 8, 2026

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 March 2026.

 

1)
Sales volume (NT$ Thousand)

Period

Items

2026

2025

Changes

%

March

Net sales

20,830,626

19,858,647

971,979

4.89%

Year-to-Date

Net sales

61,037,902

57,858,957

3,178,945

5.49%

 

2)
Funds lent to other parties (NT$ Thousand): None

 

3)
Endorsements and guarantees (NT$ Thousand): None

 

4)
Financial derivatives transactions:

a Not 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

1,118,250

0

  Fair Value

0

0

(11,945)

0

  Net profit (loss) from Fair Value

0

0

(11,292)

0

  Written-off Trading

 

 

 

 

  Contracts

0

0

1,704,430

0

  Realized profit (loss)

0

0

(6,276)

0

 

 

Source: View Original Filing on SEC EDGAR

FAQ

How did UMC (UMC) perform in March 2026 net sales?

UMC’s March 2026 net sales were NT$20,830,626 thousand, rising 4.89% from NT$19,858,647 thousand in March 2025. This indicates modest year-over-year growth in monthly revenue for the period reported.

What are UMC (UMC) year-to-date 2026 net sales and growth?

Year-to-date 2026 net sales for UMC totaled NT$61,037,902 thousand, compared with NT$57,858,957 thousand a year earlier. This represents a 5.49% increase over the same period in 2025, reflecting steady top-line expansion.

Did UMC (UMC) lend funds to other parties in March 2026?

UMC reported that funds lent to other parties for March 2026 were none. This means the company did not extend loans to external entities during the period covered in this report.

Did UMC (UMC) provide endorsements or guarantees in March 2026?

UMC disclosed that endorsements and guarantees for March 2026 were none. The company did not issue financial guarantees or endorsements to other parties during the reported period.

What derivative positions did UMC (UMC) report for March 2026?

UMC showed unwritten-off forward contracts of NT$1,118,250 thousand with a negative fair value of NT$11,945 thousand. Net loss from fair value was NT$11,292 thousand, and realized loss on written-off forwards was NT$6,276 thousand.

Did UMC (UMC) use options or interest rate swaps in March 2026?

For March 2026, UMC reported zero balances for put and call options, deposits paid, royalty income, and interest rate swaps. Derivative activity was limited to forward contracts as detailed in the disclosure.

Filing Exhibits & Attachments

1 document

Press Releases