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Turns a design into silicon.
umc.com6 sourced relationships.
Supplies Machinery and equipment
5. Transaction unit amount (e.g. XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume: one batch; average unit price: NT$1,027,730,259; total transaction price: NT$1,027,730,259 6. Trading counterparty and its relationship with the Company (if the trading counterparty is a natural person and furthermore is not a related party of the Company, the name of the trading counterparty is not required to be disclosed): TOKYO ELECTRON LIMITED; non-related party transaction
Form 6-K exhibit, 2026-05-22: acquisition of machinery and equipment · United Microelectronics Corporation · read 2026-09-11
Supplies Machinery and equipment bought from Applied Materials South East Asia Pte. Ltd.
5. Transaction unit amount (e.g. XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume: one batch; average unit price: NT$1,259,089,982; total transaction price: NT$1,259,089,982 6. Trading counterparty and its relationship with the Company (if the trading counterparty is a natural person and furthermore is not a related party of the Company, the name of the trading counterparty is not required to be disclosed): Applied Materials South East Asia Pte. Ltd.; non-related party transaction
Form 6-K exhibit, 2025-12-30: acquisition of machinery and equipment · United Microelectronics Corporation · read 2026-09-11
Supplies Machinery and equipment bought from ASML Singapore Pte. Ltd.
5. Transaction unit amount (e.g. XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume: one batch; average unit price: NT$1,578,719,526; total transaction price: NT$1,578,719,526 6. Trading counterparty and its relationship with the Company (if the trading counterparty is a natural person and furthermore is not a related party of the Company, the name of the trading counterparty is not required to be disclosed): ASML SINGAPORE PTE. LTD.; non-related party transaction
Form 6-K exhibit, 2026-02-25: acquisition of machinery and equipment · United Microelectronics Corporation · read 2026-09-11
Supplies Silicon wafers
For example, we purchased a majority of our silicon wafers from Shin-Etsu Handotai Corporation, or Shin-Etsu, GlobalWafers, Sumco Group (including Sumco Corporation and Formosa Sumco Technology Corporation) and Soitec.
UMC Form 20-F 2025 · United Microelectronics Corporation · read 2026-09-11
Supplies Silicon wafers
For example, we purchased a majority of our silicon wafers from Shin-Etsu Handotai Corporation, or Shin-Etsu, GlobalWafers, Sumco Group (including Sumco Corporation and Formosa Sumco Technology Corporation) and Soitec.
UMC Form 20-F 2025 · United Microelectronics Corporation · read 2026-09-11
Supplies Silicon wafers, including via Formosa Sumco Technology
For example, we purchased a majority of our silicon wafers from Shin-Etsu Handotai Corporation, or Shin-Etsu, GlobalWafers, Sumco Group (including Sumco Corporation and Formosa Sumco Technology Corporation) and Soitec.
Form 20-F, 2025 annual report · United Microelectronics Corporation · read 2026-09-11
Supplies Silicon wafers (through Shin-Etsu Handotai)
For example, we purchased a majority of our silicon wafers from Shin-Etsu Handotai Corporation, or Shin-Etsu, GlobalWafers, Sumco Group (including Sumco Corporation and Formosa Sumco Technology Corporation) and Soitec.
UMC Form 20-F 2025 · United Microelectronics Corporation · read 2026-09-11
Supplies Silicon wafers, via subsidiary Shin-Etsu Handotai
For example, we purchased a majority of our silicon wafers from Shin-Etsu Handotai Corporation, or Shin-Etsu, GlobalWafers, Sumco Group (including Sumco Corporation and Formosa Sumco Technology Corporation) and Soitec.
Form 20-F, 2025 annual report · United Microelectronics Corporation · read 2026-09-11
3 sourced relationships.
Buys Foundry wafer manufacturing
Our primary customers, in terms of our sales revenues, include premier integrated device manufacturers, such as Texas Instruments and Intel, plus leading fabless design companies, such as MediaTek, Realtek and Novatek.
UMC Form 20-F 2025 · United Microelectronics Corporation · read 2026-09-11
Buys Foundry wafer manufacturing
Our primary customers, in terms of our sales revenues, include premier integrated device manufacturers, such as Texas Instruments and Intel, plus leading fabless design companies, such as MediaTek, Realtek and Novatek.
UMC Form 20-F 2025 · United Microelectronics Corporation · read 2026-09-11
Buys Production of AMD programmable logic device ICs
Additionally, we utilize TSMC, United Microelectronics Corporation (UMC) and Samsung Electronics Co., Ltd. for the production of our ICs in the form of programmable logic devices.
amd-20251227 (Form 10-K) · Advanced Micro Devices, Inc. · read 2026-09-11
Buys Wafer production of programmable logic devices
Additionally, we utilize TSMC, United Microelectronics Corporation (UMC) and Samsung Electronics Co., Ltd. for the production of our ICs in the form of programmable logic devices.
amd-20251227 (Form 10-K 2025) · Advanced Micro Devices, Inc. · read 2026-09-11
0 sourced holdings.
None recorded.
1 sourced holding.
Equity-method associate stake in Unimicron with board representation
Note C: Beginning from June 2020, the Company accounts for its investment in UNIMICRON as an associate given the fact that UMC obtained the ability to exercise significant influence over UNIMICRON through representation on its Board of Directors.
UMC Form 20-F 2025 · United Microelectronics Corporation · read 2026-09-11
Associate stake in Unimicron, with newly issued shares subscribed in its capital increase, NT$ 643 million subscription, January 2026
(2) In January 2026, UMC subscribed to the newly issued shares in the capital increase of the Company’s associate, UNIMICRON TECHNOLOGY CORP., amounting to NT$ 643 million.
Form 20-F, 2025 annual report · United Microelectronics Corporation · read 2026-09-11
6 recorded, 4 drawn on the map, in 3 places.