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Stocks / Foreign companies / UMC · Semiconductors & Related Devices

United Microelectronics Corporation (UMC)

United Microelectronics Corporation files a 20-F with the SEC once a year, in New Taiwan dollars. In the year to 31 December 2025 it reported revenue of TWD 237,553 million, up 2.3% on the year before. Its profit attributable to shareholders was TWD 40,360 million, down 17.3%, and diluted earnings per share TWD 3.27.

Earnings per share are per ordinary share, in New Taiwan dollars. The share that trades in the US can be a depositary share standing for more or fewer ordinary shares, so no price ratio is worked out on this page.

The public record on UMC

Planned insider salesno Form 144 notice in twelve months
Options tapeput/call 0.34 by open interest on 26 September 2026; the straddle prices a 10.2% move to 16 October 2026
Holders4 of the followed funds hold it; largest Two Sigma Investments; 1 Schedule 13D or 13G filing in twelve months
Congress0 House trades disclosed in six months
Short interest38.4 million shares short, 3.56 days to cover at 15 September 2026

Profit and loss, 11 fiscal years

Year toDec 2025Dec 2024Dec 2023Dec 2022Dec 2021Dec 2020Dec 2019Dec 2018Dec 2017Dec 2016Dec 2015
Revenue237,553232,303222,533278,705213,011176,821148,202151,253149,285147,870144,830
Cost of sales168,647156,649144,789152,941140,961137,824126,887128,413122,227117,491113,062
Gross profit68,90675,65477,744125,76472,05038,99721,31522,84027,05830,37931,769
Research and development17,72515,61613,28412,95412,93512,89611,86013,02513,67013,53212,175
Operating profit43,94951,61357,891104,29251,68621,9314,8845,6806,5686,19410,836
Finance costs1,6021,7561,5701,8661,9632,0732,9982,8512,4951,414524
Profit before tax48,08257,04568,450109,62658,49622,5434,8072,1187,6724,72113,669
Income tax7,9038,3708,31119,3277,9181,691230-1,1309925531,028
Profit for the year40,17948,67560,13990,29950,57820,8524,5763,2486,6794,16912,641
Profit attributable to shareholders40,36048,77959,68989,47951,24622,8618,1557,6789,6778,62113,254

TWD million, from each year's annual report on the SEC's EDGAR, the year linked to its filing, on the IFRS tags the company filed. A line the company does not file under the standard tag is left out rather than estimated. Profit for the year includes the part that belongs to minority shareholders; profit attributable to shareholders is the part EPS is struck on.

Year toDec 2025Dec 2024Dec 2023Dec 2022Dec 2021Dec 2020Dec 2019Dec 2018Dec 2017Dec 2016Dec 2015
Diluted EPS3.273.944.827.164.191.870.650.600.750.671.02
Basic EPS3.304.014.927.404.271.930.710.650.810.711.07

TWD per ordinary share, as filed.

Cash flow

Year toDec 2025Dec 2024Dec 2023Dec 2022Dec 2021Dec 2020Dec 2019Dec 2018Dec 2017Dec 2016Dec 2015
Cash from operations99,86493,87286,000145,86190,35265,74554,90450,93552,47446,45059,788
Purchase of property, plant and equipment47,74588,54491,47480,12848,03526,34516,51819,59044,23691,56160,504
Free cash flow52,1195,328-5,47465,73342,31739,40038,38631,3458,238-45,110-716
Dividends paidn/an/an/an/a19,8719,7666,9118,5586,1036,9076,939

TWD million. Purchase of property, plant and equipment is the cash line as filed; purchases of intangible assets and acquisitions are not in it. Free cash flow is cash from operations less that purchase, arithmetic on the two filed lines.

Balance sheet at year end

Year toDec 2025Dec 2024Dec 2023Dec 2022Dec 2021Dec 2020Dec 2019Dec 2018Dec 2017Dec 2016Dec 2015
Total assets567,275560,169546,577524,646450,955366,454366,262362,597391,132384,227n/a
Equity attributable to shareholders365,825365,450343,376322,467264,152223,026202,504203,931208,664212,785224,853
Cash and cash equivalents110,660105,000132,554173,819132,62294,04895,49283,66281,67557,57953,290
Lease liabilities6,0016,4195,3935,7375,0695,5776,0310.0n/an/an/a
Inventories37,22835,78235,71331,07023,01122,55221,71518,20318,25816,998n/a

TWD million, at each fiscal year end. Borrowings is the company's own stated total where it files one; it is never added up from its parts here.

Ratios on the filed lines

Year toDec 2025Dec 2024Dec 2023Dec 2022Dec 2021Dec 2020Dec 2019Dec 2018Dec 2017Dec 2016Dec 2015
Gross margin29.0%32.6%34.9%45.1%33.8%22.1%14.4%15.1%18.1%20.5%21.9%
Operating margin18.5%22.2%26.0%37.4%24.3%12.4%3.3%3.8%4.4%4.2%7.5%
Net margin17.0%21.0%26.8%32.1%24.1%12.9%5.5%5.1%6.5%5.8%9.2%
Free cash flow margin21.9%2.3%-2.5%23.6%19.9%22.3%25.9%20.7%5.5%-30.5%-0.5%
Return on year-end equity11.0%13.3%17.4%27.7%19.4%10.3%4.0%3.8%4.6%4.1%5.9%
Effective tax rate16.4%14.7%12.1%17.6%13.5%7.5%4.8%-53.3%12.9%11.7%7.5%

Arithmetic on the filed lines of the same year: margins over revenue, return on equity as profit attributable to shareholders over year-end equity, tax over profit before tax.

Annual reports on EDGAR

FormYear toFiled
20-F31 December 202530 April 2026EDGAR
20-F31 December 202424 April 2025EDGAR
20-F31 December 202325 April 2024EDGAR
20-F31 December 202227 April 2023EDGAR
20-F31 December 202128 April 2022EDGAR
20-F31 December 202029 April 2021EDGAR
20-F31 December 201928 April 2020EDGAR
20-F31 December 201825 April 2019EDGAR
20-F31 December 201726 April 2018EDGAR
20-F31 December 201613 April 2017EDGAR
20-F31 December 201518 April 2016EDGAR
20-F31 December 201421 April 2015EDGAR

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