United Microelectronics (NYSE: UMC) director submits Form 3

Rhea-AI Filing Summary

UNITED MICROELECTRONICS CORP filed a Form 3 insider report for director Wu Ling-Ling. This filing identifies Wu as a board member and provides an initial disclosure of beneficial ownership status. The excerpt shows no reportable transactions or derivative positions and no specific share holdings listed.

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Wu Ling-Ling

(Last) (First) (Middle)

8F, NO.68, SEC. 1, NEIHU RD.,

(Street)

TAIPEI TAIWAN 11493

(City) (State) (Zip)

TAIWAN, PROVINCE OF CHINA

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
UNITED MICROELECTRONICS CORP [ UMC ]

3a. Foreign Trading Symbol
[2,303]

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit 24 Power of Attorney.

No securities are beneficially owned.

	/s/Chitung Liu, attorney-in-fact	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does the United Microelectronics Corp (UMC) Form 3 for Wu Ling-Ling show?

The Form 3 identifies Wu Ling-Ling as a director of UNITED MICROELECTRONICS CORP. In this excerpt, there are no reported transactions, derivative positions, or specific holding entries associated with Wu’s beneficial ownership status.

Does the UMC Form 3 for Wu Ling-Ling report any share purchases or sales?

No share purchases or sales are reported in this Form 3 excerpt. The transactions list is empty and the transactionSummary shows zero buy, sell, acquire, dispose, or exercise counts and zero related share amounts.

Are any derivative securities disclosed for Wu Ling-Ling in this UMC Form 3?

No derivative securities are disclosed for Wu Ling-Ling here. The derivativeSummary is empty, and the derivativeTransactionCount in the transactionSummary is zero, indicating no options, warrants, or other derivative positions reported in this filing excerpt.

Does this United Microelectronics (UMC) Form 3 show any existing share holdings?

This excerpt does not show any specific share holdings. The holdingEntries value is zero and there are no non-derivative or derivative holding rows, so no particular ownership quantities are detailed for Wu Ling-Ling in the provided data.

What insider role is disclosed in the UMC Form 3 for Wu Ling-Ling?

The filing indicates that Wu Ling-Ling is a director of UNITED MICROELECTRONICS CORP. Fields show Wu is not reported as an officer or ten percent owner, focusing the disclosure on board-level insider status.