IMOS

Business Context and Reporting Period

ChipMOS TECHNOLOGIES INC. (Nasdaq: IMOS), a leading provider of outsourced semiconductor assembly and test (OSAT) services, reported its unaudited consolidated revenue for the month of October 2024. This Form 6-K was filed on November 8, 2024. All U.S. dollar figures are based on an exchange rate of NT$32.01 to US$1.00 as of October 31, 2024.

Key Financial Metrics

Profit, Cash Flow, Margins, Debt, and Liquidity: The filing text does not provide clear values for net income, operating margins, cash flow, debt levels, or liquidity metrics for this period.

Material Changes vs. Prior Periods

• Month-over-Month (MoM): Revenue decreased by 5.5% compared to September 2024.
• Year-over-Year (YoY): Revenue decreased by 9.4% compared to October 2023.

Outlook, Commentary, and Risks

Management commentary indicates the revenue performance aligns with expectations discussed on the November 5, 2024 earnings call. Key market drivers include:

• DRAM: Expected to benefit from improving end markets.
• NAND Flash and DDIC: Expected to be impacted by weaker market demand, conservative ordering, and inventory adjustments at customers.

Risks and Forward-Looking Statements: The filing includes standard disclaimers that actual results may differ materially from projections due to various factors. Detailed risk factors are referenced in the Company's most recent Annual Report on Form 20-F.

Investor Verification Checklist

• Verify the specific impact of inventory adjustments on NAND flash and DDIC segments in upcoming quarterly reports.
• Monitor the trajectory of DRAM end-market recovery to confirm if it offsets declines in other segments.
• Review the full Form 20-F for comprehensive data on debt, liquidity, and profit margins not included in this monthly revenue update.
• Confirm the exchange rate sensitivity given the conversion from NT$ to US$.