ChipMOS TECHNOLOGIES INC. filings document the company's foreign-issuer disclosures for its OSAT business, Nasdaq-traded American depositary shares and Taiwan-listed common shares. Its Form 6-K reports furnish English translations of Taiwan Stock Exchange Market Observation Post System announcements, monthly revenue releases, financial-result notices and material information releases.
The filings also cover annual shareholders' meeting and ADS voting materials, including deposited share and depositary mechanics, as well as board-meeting notices, equipment acquisition disclosures, media-report clarifications and accounting differences between IFRS Accounting Standards and Taiwan IFRSs used in annual reporting. The record centers on operating results, governance, capital expenditure activity, ADR holder procedures and cross-market reporting obligations.
CHIPMOS TECHNOLOGIES INC Executive Vice President Teng-Yueh Tsai filed an initial ownership report on the company’s common stock. The filing shows direct ownership of 272,572 common shares and indirect ownership of 820,000 common shares held through Yung Hsiang Investment Co., Ltd., where Tsai serves as representative and director.
CHIPMOS TECHNOLOGIES INC director Tang Yuh-Fong filed an initial insider ownership report on Form 3. This filing establishes their status as a director and provides the baseline disclosure of any equity holdings associated with this role, without reporting any new stock purchases, sales, or option exercises.
CHIPMOS TECHNOLOGIES INC director Wang Jyh-Chau filed an initial ownership report on Form 3. This filing establishes his status as a director and provides a baseline disclosure of his beneficial ownership in the company at the time he became subject to reporting rules. The data shown does not include any buy, sell, or other share transactions.
CHIPMOS TECHNOLOGIES INC director Wang Yeong-Her filed an initial ownership report on Form 3. This filing identifies Wang as a director of the company and establishes a baseline disclosure of his equity position under insider reporting rules. The filing does not list any buy, sell, or other reportable transactions.
CHIPMOS TECHNOLOGIES INC vice president and director Yu-Chiao Su filed an initial ownership report on the company’s common stock. The filing shows direct ownership of 346,101 shares and indirect ownership of 830,000 shares held through Tsai Fu Investment Co., Ltd., where Su serves as representative and director.
CHIPMOS TECHNOLOGIES INC director files initial ownership report. Chang Pao-Hsin submitted a Form 3 as a director of ChipMOS Technologies Inc. This filing establishes his status as an insider under U.S. securities rules. The report does not list any transactions or specific share holdings in this excerpt.
CHIPMOS TECHNOLOGIES INC director Chien Kun-Yi has filed an initial Form 3, which is the required statement of beneficial ownership for insiders. This filing establishes his status as a director and serves as the baseline record of his equity holdings with the company.
The excerpt does not show any reported share transactions, derivative exercises, or option positions, indicating that this Form 3 is focused on reporting insider status rather than recent trading activity.
CHIPMOS TECHNOLOGIES INC director Yang Hong-Tzer filed an initial Form 3, which is a required statement of beneficial ownership for insiders. The filing reports no transactions, no exercised derivatives, and no current holdings or derivative positions listed in the provided data.
ChipMOS TECHNOLOGIES INC. filed a Form 6-K noting it will present to institutional investors at the BofA Securities 2026 Asia Tech Conference in Taipei on March 18–19, 2026. Senior management, including the Senior Vice President of Strategy and Investor Relations, will discuss recent financial results, business trends and growth opportunities.
The company highlights that its investor presentation is available in the investor relations section of its website. The filing also reiterates ChipMOS’s role as an industry leading outsourced semiconductor assembly and test provider with facilities across key Taiwanese science and industrial parks, and includes standard forward-looking statement cautions.
ChipMOS TECHNOLOGIES INC. reported that its board of directors approved the acquisition of a building and facilities in Tainan City, Taiwan, from INNOLUX Corporation. The property has a building area of 34,316.15 square meters, and the total transaction amount is NT$880 million.
The price was set through negotiation, using an appraisal report and market prices as references. A professional firm appraised the property at NT$851 million. The seller is not a related party, there were no brokers involved, and the acquisition is intended for company operation and production use.