Chue-San Yoo Biography and Net Worth

Vice President, Research & Development / Specialty of Taiwan Semiconductor Manufacturing

Dr. C.S. Yoo is Vice President of Specialty at Taiwan Semiconductor Manufacturing Co. Ltd. (TSMC), responsible for strategic planning, project management, and customer services of TSMC’s strategic customer program. Prior to this post, Dr. Yoo was Senior Director of TSMC’s Office of Strategy Customer Program in May of 2019. Since joining TSMC in 1988, Dr. Yoo has served in a variety of manufacturing and research & development positions in the Company. From 1991 to 1995, Dr. Yoo was an SRAM program manager, successfully developing and delivering 0.65um, 0.55um, 0.5um, 0.45um, and 0.35um technologies while introducing the triple poly technology to 0.35um to significantly increase the number of gross die per wafer. Dr. Yoo was then promoted to be Deputy Director of the SRAM/DRAM and embedded DRAM Program. In 1996, Dr. Yoo delivered 0.35um DRAM into production. In 1997 he joined the E-Beam Operation (EBO) Division and successfully led the team to deliver masks for key technologies from 0.18um to 5nm. In 2016, he developed customized robots and an auto-particle inspection system to enhance automation.

With more than three decades of practical experience in semiconductor operations management, Dr. Yoo received the “National Manager Excellence Award” in 2008, recognizing his achievement in developing the world’s most advanced mask technology. In 2017, Dr. Yoo led the EBO team to successfully deliver EUV reticles and pellicles, helping TSMC to introduce EUV into production.

In 1979, Dr. Yoo graduated with a degree in Chemical Engineering from the National Taipei Institute of Technology (Now the National Taipei University of Technology), and was certified as a professional chemical engineer in the same year. Dr. Yoo then received an M.S. degree and Ph.D. in Chemical Engineering from the Worcester Polytechnic Institute, U.S.A.

What is Chue-San Yoo's net worth?: The estimated net worth of Chue-San Yoo is at least $2.88 million as of July 7th, 2026. Dr. Yoo owns 6,590 shares of Taiwan Semiconductor Manufacturing stock worth more than $2,881,082 as of July 9th. This net worth evaluation does not reflect any other assets that Dr. Yoo may own. Learn More about Chue-San Yoo's net worth.
How do I contact Chue-San Yoo?: The corporate mailing address for Dr. Yoo 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 Chue-San Yoo's contact information.
Has Chue-San Yoo been buying or selling shares of Taiwan Semiconductor Manufacturing?: During the last ninety days, Chue-San Yoo has bought $3,907.62 in shares of Taiwan Semiconductor Manufacturing stock. Most recently, on Tuesday, July 7th, Chue-San Yoo bought 51 shares of Taiwan Semiconductor Manufacturing stock. The stock was acquired at an average cost of $76.62 per share, with a total value of $3,907.62. Following the completion of the transaction, the vice president now directly owns 6,590 shares of the company's stock, valued at $504,925.80. Learn More on Chue-San Yoo's trading history.
Who are Taiwan Semiconductor Manufacturing's active insiders?: Taiwan Semiconductor Manufacturing's insider roster includes Richard Cassidy (Sr. VP of Corp. Strategy Office and CEO & Pres of TSMC AZ), Jen-Chau Huang (VP & CFO), Chris Lin (Vice President and Chief Information Officer), 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.

Chue-San Yoo 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	51	$76.62	$3,907.62	6,590

Chue-San Yoo 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: $438.37

$440.16

$447.69

50 Day Range

MA: $424.41

$392.16

$477.85

2 Week Range

Now: $438.37

$223.70

$479.00

Volume

2,353,300 shs

Average Volume

13,874,797 shs

Market Capitalization

$2.27 trillion

P/E Ratio

36.63

Dividend Yield

0.69%

Beta

1.36