UNITED MICROELECTRONICS CORP (UMC) Annual Reports
UNITED MICROELECTRONICS CORP is listed on NYSE, classified by the SEC under Semiconductors & Related Devices (SIC 3674). This page indexes 3 annual reports, each linking to the full text on the SEC's EDGAR system.
🇹🇼 聯電 is also listed in Taiwan (2303) — see its Taiwan filings and supply-chain position →The same company on two exchanges; the US line is an ADR.
Company profile
- Exchange： NYSE
- Fiscal year end： 12/31
- SEC CIK： 1033767 →
Website：Official site ↗
Financial Highlights
| Current | Prior year | YoY | |
|---|---|---|---|
| Revenue | 2,323億 TWD | 2,225億 TWD | +4.4% |
| Operating income | 516億 TWD | 579億 TWD | -10.8% |
| Net income | 488億 TWD | 597億 TWD | -18.3% |
| EPS (diluted) | 3.94 TWD | 4.82 TWD | -18.3% |
ADR filer (Form 20-F): annual data only. Amounts in TWD.
Source: SEC EDGAR (XBRL company facts)
Financial history
Show table：Income statement
| Item | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|
| Revenue | 145 | 148 | 149 | 151 | 148 | 177 | 213 | 279 | 223 | 232 |
| Gross profit | 31.8 | 30.4 | 27.1 | 22.8 | 21.3 | 39.0 | 72.0 | 126 | 77.7 | 75.7 |
| Operating income | 10.8 | 6.19 | 6.57 | 5.68 | 4.88 | 21.9 | 51.7 | 104 | 57.9 | 51.6 |
| Net income | 13.3 | 8.62 | 9.68 | 7.68 | 8.16 | 22.9 | 51.3 | 89.5 | 59.7 | 48.8 |
Equity = assets − liabilities. Balance-sheet figures are period-end balances, not cumulative.
Show table：Balance sheet
| Item | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|
| Current assets | — | 110 | 139 | 141 | 154 | 164 | 233 | 252 | 217 | 190 |
| Total assets | — | 384 | 391 | 363 | 366 | 366 | 451 | 525 | 547 | 560 |
| Current liabilities | — | 72.8 | 88.8 | 50.0 | 73.0 | 79.5 | 108 | 113 | 102 | 77.4 |
| Total liabilities | — | 169 | 182 | 158 | 163 | 143 | 187 | 202 | 203 | 194 |
| Equity | 225 | 213 | 209 | 204 | 203 | 223 | 264 | 322 | 343 | 365 |
Positive = cash in, negative = cash out.
Show table：Cash flow statement
| Item | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|
| Operating | 59.8 | 46.5 | 52.5 | 50.9 | 54.9 | 65.8 | 90.3 | 146 | 86.0 | 93.9 |
| Investing | -68.5 | -80.1 | -35.4 | -15.5 | -31.7 | -40.1 | -62.2 | -54.4 | -97.8 | -85.9 |
| Financing | 15.1 | 38.8 | 9.16 | -33.5 | -9.87 | -25.6 | 12.5 | -57.3 | -29.1 | -39.2 |
| Cash at period end | 53.3 | 57.6 | 81.7 | 83.7 | 95.5 | 94.0 | 133 | 174 | 133 | 105 |
Gross, operating and net margin = the respective profit ÷ revenue.
Show table：Profitability
| Item | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|
| Gross margin | 21.9% | 20.5% | 18.1% | 15.1% | 14.4% | 22.1% | 33.8% | 45.1% | 34.9% | 32.6% |
| Operating margin | 7.5% | 4.2% | 4.4% | 3.8% | 3.3% | 12.4% | 24.3% | 37.4% | 26.0% | 22.2% |
| Net margin | 9.2% | 5.8% | 6.5% | 5.1% | 5.5% | 12.9% | 24.1% | 32.1% | 26.8% | 21.0% |
ROE / ROA = trailing four-quarter net income ÷ average equity / total assets (annual mode: the year’s net income ÷ average of opening and closing). Not computed when the denominator is zero or negative.
Show table：Returns & leverage
| Item | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|
| ROE | 5.9% | 3.9% | 4.6% | 3.7% | 4.0% | 10.7% | 21.0% | 30.5% | 17.9% | 13.8% |
| ROA | — | 2.2% | 2.5% | 2.0% | 2.2% | 6.2% | 12.5% | 18.3% | 11.1% | 8.8% |
| Debt ratio | — | 44.1% | 46.4% | 43.6% | 44.6% | 39.1% | 41.4% | 38.5% | 37.1% | 34.7% |
Show table：EPS
| Item | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|
| EPS（NT$） | 1.02 | 0.67 | 0.75 | 0.60 | 0.65 | 1.87 | 4.19 | 7.16 | 4.82 | 3.94 |
Source: SEC EDGAR (XBRL company facts)
Annual reports by year
| 20-F | |
|---|---|
| 2025 | Open full text → |
| 2024 | Open full text → |
| 2023 | Open full text → |
20-F: annual report of a foreign private issuer. Filings are the original documents hosted on SEC EDGAR — this site neither mirrors nor edits them.
FAQ
Where can I read UNITED MICROELECTRONICS CORP (UMC) annual reports?
Every year in the table above links straight to the full text on SEC EDGAR. US annual reports are web pages (HTML) rather than PDFs, so you can read and search them in the browser without downloading anything. 3 filings are currently indexed.
What is the difference between a 10-K and a 20-F?
A 10-K is the annual report of a US domestic issuer, with sections fixed by law: Item 1 Business, Item 1A Risk Factors, Item 7 Management's Discussion and Analysis. A 20-F is filed by foreign private issuers — Taiwanese companies with US ADRs, such as TSMC, file 20-F rather than 10-K. A 40-F applies to Canadian issuers under the MJDS.
Are earnings call materials available here?
No. Earnings calls are not SEC filings, so US pages on this site cover annual reports only. Taiwan has a mandatory investor-conference disclosure regime, and those materials are indexed under Annual Reports.
Back to US annual reports, or see the supply-chain maps.