Chitung Liu

CIK: 0002120081

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (60.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)0 (0.0%)

Compensation grants

Other (G, F, J, C, D, …)2 (40.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

UMC

UNITED MICROELECTRONICS CORP

Officer

Discretionary Trading P&L

Holdings

Transaction History (5 total)

UMC
UNITED MICROELECTRONICS CORP
Sep 17, 2026
Sale(S)
Direct
400K shares at avg. $145.00$58.0M
UMC
UNITED MICROELECTRONICS CORP
Sep 16, 2026
Sale(S)
Direct
1.2M shares at avg. $142.33$170.8M
UMC
UNITED MICROELECTRONICS CORP
Sep 7, 2026
Other(J)
Direct
1M shares-
UMC
UNITED MICROELECTRONICS CORP
Sep 7, 2026
Other(J)
Indirect
1M shares-
UMC
UNITED MICROELECTRONICS CORP
Jul 13, 2026
Sale(S)
Direct
1.9M shares at avg. $154.89$294.3M

		Type	Shares	Price		Ownership
Sep 17, 2026	UMC UNITED MICROELECTRONICS CORP	Sale(S)	400,000	$145.00	$58,000,000	Direct
Sep 16, 2026	UMC UNITED MICROELECTRONICS CORP	Sale(S)	1,200,000	$142.33	$170,799,600	Direct
Sep 7, 2026	UMC UNITED MICROELECTRONICS CORP	Other(J)	1,000,000	-	$0	Direct
Sep 7, 2026	UMC UNITED MICROELECTRONICS CORP	Other(J)	1,000,000	-	$0	Indirect
Jul 13, 2026	UMC UNITED MICROELECTRONICS CORP	Sale(S)	1,900,000	$154.89	$294,291,000	Direct

1-5 of 5 transactions

About Liu Chitung

Liu Chitung (SEC CIK 0002120081) files insider reports with the SEC as CFO & SVP of UNITED MICROELECTRONICS CORP (UMC).

Signal8 holds 4 ownership filings by Liu Chitung (1 Form 3, 3 Form 4), filed between Mar 18, 2026 and Sep 17, 2026. Those filings report 5 transactions, from Jul 13, 2026 to Sep 17, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Liu Chitung's filings is in TAIPEI.

Recent filings by Liu Chitung

Sep 17, 2026: Open-market sale of UMC shares (Form 4, code S).
Sep 16, 2026: Open-market sale of UMC shares (Form 4, code S).
Sep 7, 2026: Other transactions of UMC shares (2 lines, Form 4, code J).
Jul 13, 2026: Open-market sale of UMC shares (Form 4, code S).

Other insiders filing for UNITED MICROELECTRONICS CORP (UMC)

LIN JEN-TSUNG, Vice President
YEN HUNG-YU, CHRO & VP
TAN WEN YI, Vice President
LU CHIA-AO, Vice President
LIAO CHING YU, General Counsel & VP
CHEN JIN-SHUANG, CHRO & VP

How to read Form 4 transaction codes