欣興（Unimicron） — 所有權與 AI 伺服器產業鏈位置

2.Cause of occurrence: Taiwan Taoyuan District Prosecutors Office instructed Taoyuan Investigation Bureau visited the Company today to conduct a search and investigation, primarily to examine matters relating to Offenses Against Agriculture, Industry, and Commerce.

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1.Date of occurrence of the event:2026/08/28 2.Cause of occurrence: Taiwan Taoyuan District Prosecutors Office instructed Taoyuan Investigation Bureau visited the Company today to conduct a search and investigation, primarily to examine matters relating to Offenses Against Agriculture, Industry, and Commerce. 3.Countermeasures: The Company will fully cooperate with the investigative authorities so as to clarify the facts of the case. 4.Effect on the Company's finances and business: There is no material impact on the Company’s financial condition or business operations. 5.Any other matters that need to be specified:None

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1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities

5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch; total transaction price: NT$ 360,560,000

Li Wey Technology Engineering Co., Ltd. ; non-related party transaction

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1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities 2.Date of occurrence of the event:2026/07/24~2026/08/26 3.Date of the board of directors resolution:NA 4.Other approval date:2026/08/26 5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch; total transaction price: NT$ 360,560,000 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): Li Wey Technology Engineering Co., Ltd. ; non-related party transaction

（申報原文節錄，以原文為準）

1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities

5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch;total transaction price:NT$ 307,654,000

GO FAR Engineering Co., Ltd ; non-related party transaction

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1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities 2.Date of occurrence of the event:2026/01/23~2026/08/25 3.Date of the board of directors resolution:NA 4.Other approval date:2026/08/25 5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch;total transaction price:NT$ 307,654,000 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): GO FAR Engineering Co., Ltd ; non-related party transaction 7.Where the trading counterparty is a related party, announcement shall also

（申報原文節錄，以原文為準）

1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities

5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch; total transaction price: NT$ 307,229,822

FU KUO ELECTRIC CO.,LTD ; non-related party transaction

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1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities 2.Date of occurrence of the event:2025/09/08~2026/08/05 3.Date of the board of directors resolution:NA 4.Other approval date:2026/08/05 5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch; total transaction price: NT$ 307,229,822 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): FU KUO ELECTRIC CO.,LTD ; non-related party transaction 7.Where the trading counterparty is a related party, announcement shall also

（申報原文節錄，以原文為準）

1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities

5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch; total transaction price: NT$ 304,097,622

CHENG DEH FIRE PROTECTION INDUSTRIAL CORP ; non-related party transaction

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1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities 2.Date of occurrence of the event:2025/08/14~2026/07/31 3.Date of the board of directors resolution:NA 4.Other approval date:2026/07/31 5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch; total transaction price: NT$ 304,097,622 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): CHENG DEH FIRE PROTECTION INDUSTRIAL CORP ; non-related party transaction

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1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): 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;total transaction price:NT$ 1,056,690,000

MIRLE Automation Corporation ; non-related party transaction

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1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Machinery and equipment 2.Date of occurrence of the event:2026/05/27~2026/07/21 3.Date of the board of directors resolution:NA 4.Other approval date:2026/07/21 5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch;total transaction price:NT$ 1,056,690,000 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): MIRLE Automation Corporation ; non-related party transaction

（申報原文節錄，以原文為準）

1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities

5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch; total transaction price: NT$ 442,550,000

Li Wey Technology Engineering Co., Ltd. ; non-related party transaction

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1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities 2.Date of occurrence of the event:2026/05/29~2026/07/13 3.Date of the board of directors resolution:NA 4.Other approval date:2026/07/13 5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch; total transaction price: NT$ 442,550,000 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): Li Wey Technology Engineering Co., Ltd. ; non-related party transaction

（申報原文節錄，以原文為準）

1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities

5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch;total transaction price:NT$378,440,000

MEGA UNION TECHNOLOGY INC.; non-related party transaction

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1.Name and nature of the underlying asset (e.g., land located at Sublot XX, Lot XX, North District, Taichung City): Facilities 2.Date of occurrence of the event:2025/07/08~2026/07/07 3.Date of the board of directors resolution:NA 4.Other approval date:2026/07/07 5.Transaction unit amount (e.g.XX square meters, equivalent to XX ping), unit price, and total transaction price: Transaction volume:one batch;total transaction price:NT$378,440,000 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): MEGA UNION TECHNOLOGY INC.; non-related party transaction 7.Where the trading counterparty is a related party, announcement shall also

（申報原文節錄，以原文為準）