Yuh-Jier Mii Biography and Net Worth

COO of Taiwan Semiconductor Manufacturing

Dr. Y.J. Mii is Executive Vice President and Co-Chief Operating Officer at Taiwan Semiconductor Manufacturing Co. Ltd. (TSMC). Dr. Mii joined TSMC in 1994 as a manager at Fab 3 and then joined the company's R&D organization in 2001. In 2011, Dr. Mii was appointed Vice President of Research and Development and later he was promoted to Senior Vice President in November 2016.

In more than two decades of services at TSMC, Dr. Mii has contributed greatly to the development and manufacturing of advanced CMOS technologies in both Fab Operations and R&D. He successfully managed the development of 90nm, 40nm and 28nm technologies. By spearheading the research and development of 16nm, 7nm, 5nm, 3nm, and beyond, he has helped maintain TSMC's technology leadership in the foundry segment of the global semiconductor industry.

Dr. Mii received the IEEE Frederik Philips Award in 2022, recognizing his outstanding accomplishments in the management of research and development. Before joining TSMC, Dr. Mii was a research staff member at IBM Research Center.

Dr. Mii has 34 patents globally, including 25 US patents, and holds a B.S. in electrical engineering from National Taiwan University, as well as an M.S. and Ph.D. in Electrical Engineering from the University of California, Los Angeles (UCLA).

What is Yuh-Jier Mii's net worth?: The estimated net worth of Yuh-Jier Mii is at least $3.23 million as of July 7th, 2026. Mii owns 8,027 shares of Taiwan Semiconductor Manufacturing stock worth more than $3,230,763 as of July 20th. This net worth estimate does not reflect any other assets that Mii may own. Learn More about Yuh-Jier Mii's net worth.
How do I contact Yuh-Jier Mii?: The corporate mailing address for Mii and other Taiwan Semiconductor Manufacturing executives is NO. 8 LI-HSIN ROAD 6 SCIENCE-BASED INDUSTRIAL PARK, HSINCHU F5, 300-78. Taiwan Semiconductor Manufacturing can also be reached via phone at (863) 563-6688 and via email at [email protected]. Learn More on Yuh-Jier Mii's contact information.
Has Yuh-Jier Mii been buying or selling shares of Taiwan Semiconductor Manufacturing?: During the last ninety days, Yuh-Jier Mii has bought $5,210.16 of Taiwan Semiconductor Manufacturing stock. Most recently, on Tuesday, July 7th, Yuh-Jier Mii bought 68 shares of Taiwan Semiconductor Manufacturing stock. The stock was acquired at an average cost of $76.62 per share, with a total value of $5,210.16. Following the completion of the transaction, the chief operating officer now directly owns 8,027 shares of the company's stock, valued at $615,028.74. Learn More on Yuh-Jier Mii's trading history.
Who are Taiwan Semiconductor Manufacturing's active insiders?: Taiwan Semiconductor Manufacturing's insider roster includes Min Cao (Vice President, Research & Development / Pathfinding and Corporate Research / Chief Technology Offic), Richard Cassidy (Sr. VP of Corp. Strategy Office and CEO & Pres of TSMC AZ), Pei-Hung Chen (Vice President, Human Resources), Tzu-Sou Chuang (VP), Jun He (VP of Advanced Packaging Technology and Service), Kuo-Chin Hsu (Vice President, Advanced Packaging Technology Development), Jen-Chau Huang ( Chief Financial Officer and Spokesperson ), Jen-Chau Huang (VP & CFO), Yuan-Ko Hwang (VP, Materials Management), Yung-Haw Liaw (VP), Chris Lin (Vice President and Chief Information Officer), Lee-Chung Lu (VP), Yuh-Jier Mii (COO), Bor-Zen Tien (VP), C. Wei (Vice Chairman & CEO), Che-Chia Wei (Chairman and Chief Executive Officer), Chue-San Yoo (Vice President, Research & Development / Specialty), and Lipen Yuan (Vice President, Business Development). Learn More on Taiwan Semiconductor Manufacturing's active insiders.
Are insiders buying or selling shares of Taiwan Semiconductor Manufacturing?: During the last year, Taiwan Semiconductor Manufacturing insiders bought shares 38 times. They purchased a total of 8,043 shares worth more than $579,027.66. During the last year, insiders at the semiconductor company sold shares 1 times. They sold a total of 200,000 shares worth more than $13,966,000.00. The most recent insider tranaction occured on July, 7th when SVP Ying-Lang Wang bought 53 shares worth more than $4,060.86. Insiders at Taiwan Semiconductor Manufacturing own 1.1% of the company. Learn More about insider trades at Taiwan Semiconductor Manufacturing.
Information on this page was last updated on 7/7/2026.

Yuh-Jier Mii Insider Trading History at Taiwan Semiconductor Manufacturing

Transaction Date	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction	Details
7/7/2026	Buy	68	$76.62	$5,210.16	8,027

Yuh-Jier Mii Buying and Selling Activity at Taiwan Semiconductor Manufacturing

Taiwan Semiconductor Manufacturing Company Overview

Taiwan Semiconductor Manufacturing Company Limited, together with its subsidiaries, manufactures, packages, tests, and sells integrated circuits and other semiconductor devices in Taiwan, China, Europe, the Middle East, Africa, Japan, the United States, and internationally. It provides a range of wafer fabrication processes, including processes to manufacture complementary metal- oxide-semiconductor (CMOS) logic, mixed-signal, radio frequency, embedded memory, bipolar CMOS mixed-signal, and others. The company also offers customer and engineering support services; manufactures masks; and invests in technology start-up companies; researches, designs, develops, manufactures, packages, tests, and sells color filters; and provides investment services. Its products are used in high performance computing, smartphones, Internet of things, automotive, and digital consumer electronics. The company was incorporated in 1987 and is headquartered in Hsinchu City, Taiwan.

Today's Range

Now: $402.49

$400.08

$409.89

50 Day Range

MA: $426.76

$392.16

$477.85

2 Week Range

Now: $402.49

$223.70

$479.00

Volume

11,625,052 shs

Average Volume

14,769,571 shs

Market Capitalization

$2.09 trillion

P/E Ratio

29.04

Dividend Yield

0.75%

Beta

1.36